CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>Curveball - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"7fd4f882-5251-4cfd-b8a2-011ca315ad33","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Curveball","wgTitle":"Curveball","wgCurRevisionId":1237670718,"wgRevisionId":1237670718,"wgArticleId":467830,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["CS1 maint: numeric names: authors list","Articles with short description","Short description matches Wikidata","Articles needing additional references from March 2018","All articles needing additional references","Commons category link is on Wikidata","Aerodynamics","Baseball pitches","Baseball plays","Softball pitches"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"Curveball","wgRelevantArticleId":467830,"wgIsProbablyEditable": true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":20000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q15710733","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"], "GEHomepageSuggestedEditsEnableTopics":true,"wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","mediawiki.page.media","ext.scribunto.logs","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher", "ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","wikibase.sidebar.tracking"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/b/b4/12-6_Curveball_%28single_frame%29.gif"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="1331"> <meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/b/b4/12-6_Curveball_%28single_frame%29.gif"> <meta property="og:image:width" content="800"> <meta property="og:image:height" content="887"> <meta property="og:image:width" content="640"> <meta property="og:image:height" content="710"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Curveball - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/Curveball"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=Curveball&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/Curveball"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Curveball rootpage-Curveball skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=Curveball" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=Curveball" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=Curveball" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=Curveball" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-Grip_and_action" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Grip_and_action"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Grip and action</span> </div> </a> <button aria-controls="toc-Grip_and_action-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Grip and action subsection</span> </button> <ul id="toc-Grip_and_action-sublist" class="vector-toc-list"> <li id="toc-Safety" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Safety"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Safety</span> </div> </a> <ul id="toc-Safety-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Variations" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Variations"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Variations</span> </div> </a> <ul id="toc-Variations-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Physics" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Physics"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Physics</span> </div> </a> <ul id="toc-Physics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Real_or_illusion?" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Real_or_illusion?"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Real or illusion?</span> </div> </a> <ul id="toc-Real_or_illusion?-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nicknames" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Nicknames"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Nicknames</span> </div> </a> <ul id="toc-Nicknames-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Curveball</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 8 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-8" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">8 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Curveball" title="Curveball – German" lang="de" hreflang="de" data-title="Curveball" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Balle_courbe" title="Balle courbe – French" lang="fr" hreflang="fr" data-title="Balle courbe" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%BB%A4%EB%B8%8C_(%EC%95%BC%EA%B5%AC)" title="커브 (야구) – Korean" lang="ko" hreflang="ko" data-title="커브 (야구)" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Curveball" title="Curveball – Dutch" lang="nl" hreflang="nl" data-title="Curveball" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AB%E3%83%BC%E3%83%96_(%E7%90%83%E7%A8%AE)" title="カーブ (球種) – Japanese" lang="ja" hreflang="ja" data-title="カーブ (球種)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Curveball" title="Curveball – Swedish" lang="sv" hreflang="sv" data-title="Curveball" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Curveball" title="Curveball – Vietnamese" lang="vi" hreflang="vi" data-title="Curveball" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%9B%B2%E7%90%83" title="曲球 – Chinese" lang="zh" hreflang="zh" data-title="曲球" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q15710733#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Curveball" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:Curveball" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Curveball"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Curveball&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Curveball&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Curveball"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Curveball&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Curveball&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/Curveball" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/Curveball" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Curveball&oldid=1237670718" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Curveball&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=Curveball&id=1237670718&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FCurveball"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FCurveball"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=Curveball&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Curveball&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:Curveballs" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q15710733" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Type of pitch in baseball</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Curveball_(disambiguation)" class="mw-disambig" title="Curveball (disambiguation)">Curveball (disambiguation)</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:12-6_Curveball_(single_frame).gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/12-6_Curveball_%28single_frame%29.gif/290px-12-6_Curveball_%28single_frame%29.gif" decoding="async" width="290" height="322" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/12-6_Curveball_%28single_frame%29.gif/435px-12-6_Curveball_%28single_frame%29.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/b/b4/12-6_Curveball_%28single_frame%29.gif 2x" data-file-width="568" data-file-height="630" /></a><figcaption>A diagram of a <a href="/wiki/12%E2%80%936_curveball" title="12–6 curveball">12–6 curveball</a></figcaption></figure> <p>In <a href="/wiki/Baseball" title="Baseball">baseball</a> and <a href="/wiki/Softball" title="Softball">softball</a>, the <b>curveball</b> is a type of <a href="/wiki/Pitch_(baseball)" title="Pitch (baseball)">pitch</a> thrown with a characteristic grip and hand movement that imparts forward spin to the <a href="/wiki/Baseball_(object)" class="mw-redirect" title="Baseball (object)">ball</a>, causing it to dive as it approaches the plate. Varieties of curveball include the <a href="/wiki/12%E2%80%936_curveball" title="12–6 curveball">12–6 curveball</a>, power curveball, and the <a href="/wiki/Knuckle_curve" title="Knuckle curve">knuckle curve</a>. Its close relatives are the <a href="/wiki/Slider_(baseball)" class="mw-redirect" title="Slider (baseball)">slider</a> and the <a href="/wiki/Slurve" title="Slurve">slurve</a>. The "curve" of the ball varies from pitcher to pitcher. </p><p>The expression "to throw a curveball" essentially translates to introducing a significant deviation to a preceding concept. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Grip_and_action">Grip and action</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=1" title="Edit section: Grip and action"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Curve_1.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Curve_1.JPG/220px-Curve_1.JPG" decoding="async" width="220" height="293" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Curve_1.JPG/330px-Curve_1.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Curve_1.JPG/440px-Curve_1.JPG 2x" data-file-width="960" data-file-height="1280" /></a><figcaption>Grip of a curveball</figcaption></figure> <p>The curve ball is gripped much like a cup or drinking glass is held. The pitcher places the middle finger on and parallel to one of the long seams, and the thumb just behind the seam on the opposite side of the ball such that if looking from the top down, the hand should form a "C shape" with the horseshoe pointing in towards the palm following the contour of the thumb. The index finger is placed alongside the middle finger, and the other two extraneous fingers are folded in towards the palm with the knuckle of the ring finger touching the leather. Occasionally some pitchers will flare out these two fingers straight and away from the ball to keep them clear of the throwing motion. The curveball and slider share nearly identical grips and throwing motion. </p><p>The delivery of a curveball is entirely different from that of most other pitches. The pitcher at the top of the throwing arc will snap the arm and wrist in a downward motion. The ball first leaves contact with the thumb and tumbles over the index finger thus imparting the forward or "top-spin" characteristic of a curveball. The result is the exact opposite pitch of the <a href="/wiki/Four-seam_fastball" title="Four-seam fastball">four-seam fastball</a>'s backspin, but with all four seams rotating in the direction of the flight path with forward-spin, with the <a href="/wiki/Axis_of_rotation" class="mw-redirect" title="Axis of rotation">axis of rotation</a> perpendicular to the intended flight path, much like a <a href="/wiki/Reel_mower" class="mw-redirect" title="Reel mower">reel mower</a> or a <a href="/wiki/Bowling_ball" title="Bowling ball">bowling ball</a>. </p><p>The amount of break on the ball depends on how hard the pitcher can snap the throw off, or how much forward spin can be put on the ball. The harder the snap, the more the pitch will break. Curveballs primarily break downwards, but can also break toward the pitcher's off hand to varying degrees. Unlike the fastball, the apex of the ball's flight path arc does not necessarily need to occur at the pitcher's release point, and often peaks shortly afterwards. Curveballs are thrown with considerably less velocity than fastballs, because of both the unnatural delivery of the ball and the general rule that pitches thrown with less velocity will break more.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> A typical curveball in the major collegiate level and above will average between 65 and 80 mph, with the average <a href="/wiki/MLB" class="mw-redirect" title="MLB">MLB</a> curve at 77 mph.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>From a hitter's perspective, the curveball will start in one location (usually high or at the top of the strike zone) and then dive rapidly as it approaches the plate. The most effective curveballs will start breaking at the apex of the arc of the ball flight, and continue to break more and more rapidly as they approach and cross through the strike zone. A curveball that a pitcher fails to put enough spin on will not break much and is colloquially called a "hanging curve". Hanging curves are usually disastrous for a pitcher because the low velocity, non-breaking pitch arrives high in the zone where hitters can wait on it and drive it for power. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Curveball_topspin.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Curveball_topspin.svg/220px-Curveball_topspin.svg.png" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Curveball_topspin.svg/330px-Curveball_topspin.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Curveball_topspin.svg/440px-Curveball_topspin.svg.png 2x" data-file-width="934" data-file-height="934" /></a><figcaption>Diagram of the movement of a thrown curveball</figcaption></figure> <p>The curveball is a popular and effective pitch in professional baseball, but it is not particularly widespread in leagues with players younger than college level. This is with regard for the safety of the pitcher – not because of its difficulty – though the pitch is widely considered difficult to learn as it requires some degree of mastery and the ability to pinpoint the thrown ball's location. There is generally a greater chance of throwing <a href="/wiki/Wild_pitch" title="Wild pitch">wild pitches</a> when throwing the curveball. </p><p>When thrown correctly, it could have a break from seven to as much as 20 inches in comparison to the same pitcher's fastball.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Safety">Safety</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=2" title="Edit section: Safety"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Due to the unnatural motion required to throw it, the curveball is considered a more advanced pitch and poses inherent risk of injury to a pitcher's elbow and shoulder. There has been a controversy, as reported in <i>The New York Times</i>, March 12, 2012, about whether curveballs alone are responsible for injuries in young pitchers or whether the number of pitches thrown is the predisposing factor.<sup id="cite_ref-nyt_4-0" class="reference"><a href="#cite_note-nyt-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> In theory, allowing time for the <a href="/wiki/Cartilage" title="Cartilage">cartilage</a> and <a href="/wiki/Tendon" title="Tendon">tendons</a> of the arm to fully develop would protect against injuries. While acquisition of proper form might be protective, physician James Andrews is quoted in the article as stating that in many children, insufficient neuromuscular control, lack of proper mechanics, and fatigue make maintenance of proper form unlikely. </p><p>The parts of the arm most commonly injured by the curveball are the <a href="/wiki/Ligament" title="Ligament">ligaments</a> in the elbow, the <a href="/wiki/Biceps" title="Biceps">biceps</a>, and the forearm muscles.<sup id="cite_ref-thurston_5-0" class="reference"><a href="#cite_note-thurston-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Major elbow injury requires repair through elbow ligament reconstruction, or <a href="/wiki/Tommy_John_surgery" class="mw-redirect" title="Tommy John surgery">Tommy John surgery</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Variations">Variations</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=3" title="Edit section: Variations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Unreferenced_section plainlinks metadata ambox ambox-content ambox-Unreferenced" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This section <b>does not <a href="/wiki/Wikipedia:Citing_sources" title="Wikipedia:Citing sources">cite</a> any <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">sources</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Curveball" title="Special:EditPage/Curveball">improve this section</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and <a href="/wiki/Wikipedia:Verifiability#Burden_of_evidence" title="Wikipedia:Verifiability">removed</a>.</span> <span class="date-container"><i>(<span class="date">March 2018</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p>Curveballs have a variety of trajectories and breaks among pitchers. This chiefly has to do with the arm slot and release point of a given pitcher, which is in turn governed by how comfortable the pitcher is throwing the overhand curveball. </p><p>Pitchers who can throw a curveball completely overhanded with the arm slot more or less vertical will have a curveball that will break straight downwards. This is called a <a href="/wiki/12%E2%80%936_curveball" title="12–6 curveball">12–6 curveball</a> as the break of the pitch is on a straight path downwards like the hands of a clock at 12 and 6. The <a href="/wiki/Rotation_around_a_fixed_axis" title="Rotation around a fixed axis">axis of rotation</a> of a 12–6 curve is parallel with the level ground and perpendicular to its flight path. </p><p>Pitchers throwing their curveballs with the arm slot at an angle will throw a curveball that breaks down and toward the pitcher's off-hand. In the most extreme cases, the curve will break very wide laterally. Because the slider and the curveball share nearly the same grip and have the same unique throwing motions, this curveball breaks much like a slider, and is colloquially termed a "<a href="/wiki/Slurve" title="Slurve">slurve</a>". The axis of rotation on a slurve will still be more or less perpendicular to the flight path of the ball; unlike on a 12–6 curve, however, the axis of rotation will not be parallel to the level ground. With some pitchers, the difference between curveball and other pitches such as slider and slurve may be difficult to detect or even describe. A less common term for this type of curveball is a 1–7 (outdrop, outcurve, dropping roundhouse) or 2–8 (sweeping roundhouse curveball). </p><p>A curveball spinning on a vertical axis completely perpendicular to its flight path and thus with complete side spin that is either 3–9 for a right handed pitcher or 9–3 for a left handed pitcher is called a sweeping curveball, flat curveball, or frisbee curveball. The flat curveball will still drop because of gravity, but due to the lack of top spin the drop is only a small amount compared to the 12–6, 1–7/11–5, or 2–8/10–4 curveballs. Most often this side spin happens due to a pitcher having an arm angle that is either side arm or at a very low 3/4 arm angle. However, sometimes complete side spin happens for a pitcher who has a higher arm slot due to the person throwing the pitch with a twisting motion causing the fingers to move around the side of the ball instead of over the top of the ball. Using this twisting motion around the ball is said to cause injury to the arm near the elbow. A slider's spin axis is almost parallel to the ball's flight path similar to a football or bullet, but tilted slightly upwards pointing to 12 o'clock. When a slider's spin axis points to 1 o'clock or 2 o'clock, then the pitch becomes a slurve. This slurve tends to happen when a pitcher uses too much force on the curveball and less finesse. This happens because the pitcher may lazily pronate slightly at the release point instead of following through with complete supination at the end of the throw for the curve. At other times the slurve will happen due to the pitcher supinating a little too much at the release point when throwing a slider, which may be called a slurvy slider. A slurvy slider with the same velocity of a power slider (5–8 mph slower than a fastball) may impart a greater break. </p> <div class="mw-heading mw-heading2"><h2 id="Physics">Physics</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=4" title="Edit section: Physics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Generally the <a href="/wiki/Magnus_effect" title="Magnus effect">Magnus effect</a> describes the laws of physics that make a curveball curve. A fastball travels through the air with backspin, which creates a higher pressure zone in the air ahead of and under the baseball. The baseball's raised seams augment the ball's ability to develop a <a href="/wiki/Boundary_layer" title="Boundary layer">boundary layer</a> and therefore a greater differential of pressure between the upper and lower zones. The effect of <a href="/wiki/Gravity" title="Gravity">gravity</a> is partially counteracted as the ball rides on and into increased pressure. Thus the fastball falls less than a ball thrown without spin (neglecting <a href="/wiki/Knuckleball" title="Knuckleball">knuckleball</a> effects) during the 60 feet 6 inches it travels to home plate. </p><p>On the other hand, a curveball, thrown with <a href="/wiki/Topspin" title="Topspin">topspin</a>, creates a higher pressure zone on top of the ball, which deflects the ball downward in flight. Instead of counteracting gravity, the curveball adds additional downward force, thereby giving the ball an exaggerated drop in flight. </p> <div class="mw-heading mw-heading2"><h2 id="Real_or_illusion?"><span id="Real_or_illusion.3F"></span>Real or illusion?</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=5" title="Edit section: Real or illusion?"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>There was once a debate on whether a curveball actually curves or is an <a href="/wiki/Optical_illusion" title="Optical illusion">optical illusion</a>. In 1949, Ralph B. Lightfoot, an aeronautical engineer at <a href="/wiki/Sikorsky_Aircraft" title="Sikorsky Aircraft">Sikorsky Aircraft</a>, used wind tunnel tests to prove that a curveball curves.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> On whether a curveball is caused by an illusion, <a href="/wiki/Baseball_Hall_of_Fame" class="mw-redirect" title="Baseball Hall of Fame">Baseball Hall of Fame</a> pitcher <a href="/wiki/Dizzy_Dean" title="Dizzy Dean">Dizzy Dean</a> has been quoted in a number of variations on this basic premise: "Stand behind a tree 60 feet away, and I will whomp you with an optical illusion!" </p><p>However, optical illusion caused by the ball's spinning may play an important part in what makes curveballs difficult to hit. The curveball's trajectory is smooth, but the batter perceives a sudden, dramatic change in the ball's direction. When an object that is spinning and moving through space is viewed directly, the overall motion is interpreted correctly by the brain. However, as it enters the peripheral vision, the internal spinning motion distorts how the overall motion is perceived. A curveball's trajectory begins in the center of the batter's vision, but overlaps with peripheral vision as it approaches the plate, which may explain the suddenness of the break perceived by the batter.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> A peer-reviewed article on this hypothesis was published in 2010.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Nicknames">Nicknames</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=6" title="Edit section: Nicknames"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Popular nicknames for the curveball include "the bender" and "the hook" (both describing the trajectory of the pitch), as well as "the yakker" and "Uncle Charlie". <a href="/wiki/New_York_Mets" title="New York Mets">New York Mets</a> pitcher <a href="/wiki/Dwight_Gooden" title="Dwight Gooden">Dwight Gooden</a> threw a curve so deadly that it was nicknamed "Lord Charles" and the great hitter <a href="/wiki/Bill_Madlock" title="Bill Madlock">Bill Madlock</a> called it "the yellow hammer”—apparently because it came down like a hammer and was too yellow to get hit by a bat. Because catchers frequently use two fingers to signal for a curve, the pitch is also referred to as "the deuce" or "number two".<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=7" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Candy_Cummings" title="Candy Cummings">Candy Cummings</a>, a star pitcher in the 1860s and 1870s, is widely credited with inventing the curveball. In his biography of Cummings, Stephen Katz provides proof.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Several other pitchers of Cummings' era claimed to have invented the curveball. One was Fred Goldsmith. Goldsmith maintained that he gave a demonstration of the pitch on August 16, 1870, at the <a href="/wiki/Capitoline_Grounds" title="Capitoline Grounds">Capitoline Grounds</a> in <a href="/wiki/Brooklyn" title="Brooklyn">Brooklyn</a>, <a href="/wiki/New_York_(state)" title="New York (state)">New York</a>, and that renowned sportswriter <a href="/wiki/Henry_Chadwick_(writer)" title="Henry Chadwick (writer)">Henry Chadwick</a> had covered it in the <i><a href="/wiki/Brooklyn_Eagle" title="Brooklyn Eagle">Brooklyn Eagle</a></i> on August 17, 1870. However, Stephen Katz, in his biography of Cummings, shows that Goldsmith's claim was not credible, and that Goldsmith's reference to an article by Chadwick in the <i>Brooklyn Eagle</i> was likely fabricated.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> Other claimants to invention of the curveball are shown by Katz to have gotten the curveball only after Cummings, or not to have been pitching curveballs.<sup id="cite_ref-1869chrono_15-0" class="reference"><a href="#cite_note-1869chrono-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> In 1876, the first known collegiate baseball player to perfect the curveball was <a href="/wiki/Clarence_Emir_Allen" title="Clarence Emir Allen">Clarence Emir Allen</a> of Western Reserve College, now known as <a href="/wiki/Case_Western_Reserve_University" title="Case Western Reserve University">Case Western Reserve University</a>, where he never lost a game.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Both Allen, and teammate pitcher John P. Barden, became famous for employing the curve in the late 1870s.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> In the early 1880s, <a href="/wiki/Clinton_Scollard" title="Clinton Scollard">Clinton Scollard</a> (1860–1932), a pitcher from <a href="/wiki/Hamilton_College_(New_York)" class="mw-redirect" title="Hamilton College (New York)">Hamilton College</a> in New York, became famous for his curve ball and later earned fame as a prolific American poet.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> In 1885, <a href="/wiki/St._Nicholas_Magazine" class="mw-redirect" title="St. Nicholas Magazine"><i>St. Nicholas</i>, a children's magazine</a>, featured a story entitled, "How Science Won the Game". It told of how a boy pitcher mastered the curveball to defeat the opposing batters.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p><p>The <i><a href="/wiki/New_York_Clipper" title="New York Clipper">New York Clipper</a></i> reported, of a September 26, 1863, game at <a href="/wiki/Princeton_University" title="Princeton University">Princeton University</a> (then the College of New Jersey), that F. P. Henry's "slow pitching with a great twist to the ball achieved a victory over fast pitching." However, Katz, in his biography of Cummings, explains that Henry was not actually pitching curveballs.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Harvard_University" title="Harvard University">Harvard</a> president <a href="/wiki/Charles_William_Eliot" title="Charles William Eliot">Charles Eliot</a> was among those opposed to the curve, claiming it was a dishonest practice unworthy of Harvard students.<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> At an athletics conference at Yale University in 1884 a speaker (thought to be from Harvard, likely Charles Eliot Norton, a cousin of the Harvard president<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup>) was reported to have stated: "For the pitcher, instead of delivering the ball to the batter in an honest, straightforward way, that the latter may exert his strength to the best advantage in knocking it, now uses every effort to deceive him by curving—I think that is the word—the ball. And this is looked upon as the last triumph of athletic science and skill. I tell you it is time to call halt! when the boasted progress in athletics is in the direction of fraud and deceit."<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> </p><p>In the past, major league pitchers <a href="/wiki/Tommy_Bridges" title="Tommy Bridges">Tommy Bridges</a>, <a href="/wiki/Bob_Feller" title="Bob Feller">Bob Feller</a>, <a href="/wiki/Virgil_Trucks" title="Virgil Trucks">Virgil Trucks</a>, <a href="/wiki/Herb_Score" title="Herb Score">Herb Score</a>, <a href="/wiki/Camilo_Pascual" title="Camilo Pascual">Camilo Pascual</a>, <a href="/wiki/Sandy_Koufax" title="Sandy Koufax">Sandy Koufax</a>, <a href="/wiki/Bert_Blyleven" title="Bert Blyleven">Bert Blyleven</a>, and the aforementioned <a href="/wiki/Dwight_Gooden" title="Dwight Gooden">Dwight Gooden</a> were regarded as having outstanding curveballs. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=8" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="nowrap"><span class="noviewer" typeof="mw:File"><span><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/Baseball.svg/28px-Baseball.svg.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/Baseball.svg/42px-Baseball.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/92/Baseball.svg/56px-Baseball.svg.png 2x" data-file-width="520" data-file-height="520" /></span></span> </span><a href="/wiki/Portal:Baseball" title="Portal:Baseball">Baseball portal</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://wayback.archive-it.org/all/20090324011336/http://www.seattlepi.com/baseball/pdf/pitchingpage.pdf">"Pitching 101"</a> <span class="cs1-format">(PDF)</span>. <i>Seattle Post-Intelligencer</i>. Archived from <a rel="nofollow" class="external text" href="http://www.seattlepi.com/baseball/pdf/pitchingpage.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2009-03-24.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Seattle+Post-Intelligencer&rft.atitle=Pitching+101&rft_id=http%3A%2F%2Fwww.seattlepi.com%2Fbaseball%2Fpdf%2Fpitchingpage.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20170724073952/http://www.efastball.com/baseball/pitching/grips/curve-ball-grip/">"Curve Ball Grip"</a>. Efastball.com. 2009-07-26. Archived from <a rel="nofollow" class="external text" href="http://www.efastball.com/baseball/pitching/grips/curve-ball-grip/">the original</a> on 2017-07-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-02-16</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Curve+Ball+Grip&rft.pub=Efastball.com&rft.date=2009-07-26&rft_id=http%3A%2F%2Fwww.efastball.com%2Fbaseball%2Fpitching%2Fgrips%2Fcurve-ball-grip%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.hardballtimes.com/main/blog_article/holy-mother-of-strasburg-with-pitch-f-x/">"Holy mother of Strasburg (with Pitch f/x!)"</a>. Hardballtimes.com. 2010-06-09<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-10-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Holy+mother+of+Strasburg+%28with+Pitch+f%2Fx%21%29&rft.pub=Hardballtimes.com&rft.date=2010-06-09&rft_id=http%3A%2F%2Fwww.hardballtimes.com%2Fmain%2Fblog_article%2Fholy-mother-of-strasburg-with-pitch-f-x%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-nyt-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-nyt_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBill_Pennington2012" class="citation news cs1">Bill Pennington (2012-03-11). <a rel="nofollow" class="external text" href="https://www.nytimes.com/2012/03/12/sports/baseball/debate-grows-over-how-to-protect-young-pitching-arms.html">"Young Arms and Curveballs: A Scientific Twist"</a>. <i>The New York Times</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+New+York+Times&rft.atitle=Young+Arms+and+Curveballs%3A+A+Scientific+Twist&rft.date=2012-03-11&rft.au=Bill+Pennington&rft_id=https%3A%2F%2Fwww.nytimes.com%2F2012%2F03%2F12%2Fsports%2Fbaseball%2Fdebate-grows-over-how-to-protect-young-pitching-arms.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-thurston-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-thurston_5-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBill_Thurston2008" class="citation book cs1">Bill Thurston (2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090214063238/http://baseball-articles.com/teachcurve.html"><i>Age to Teach the Curve Ball and How to Teach It</i></a>. baseball-articles.com. Archived from <a rel="nofollow" class="external text" href="http://www.baseball-articles.com/teachcurve.html">the original</a> on 2009-02-14<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-01-29</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Age+to+Teach+the+Curve+Ball+and+How+to+Teach+It&rft.pub=baseball-articles.com&rft.date=2008&rft.au=Bill+Thurston&rft_id=http%3A%2F%2Fwww.baseball-articles.com%2Fteachcurve.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.phschool.com/science/science_news/articles/pitching_science.html">"Pitching Science – Engineers who track baseballs catch insights into the game"</a>. Phschool.com. 2001-06-09<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-10-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Pitching+Science+%E2%80%93+Engineers+who+track+baseballs+catch+insights+into+the+game&rft.pub=Phschool.com&rft.date=2001-06-09&rft_id=http%3A%2F%2Fwww.phschool.com%2Fscience%2Fscience_news%2Farticles%2Fpitching_science.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREF2009finalist2009" class="citation web cs1">2009finalist (2009-05-10). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20101027064948/http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/">"2009 Vision Sciences Meeting: Curveball Demo Wins Illusion Contest"</a>. Illusioncontest.neuralcorrelate.com. Archived from <a rel="nofollow" class="external text" href="http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/">the original</a> on 2010-10-27<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-10-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=2009+Vision+Sciences+Meeting%3A+Curveball+Demo+Wins+Illusion+Contest&rft.pub=Illusioncontest.neuralcorrelate.com&rft.date=2009-05-10&rft.au=2009finalist&rft_id=http%3A%2F%2Fillusioncontest.neuralcorrelate.com%2F2009%2Fthe-break-of-the-curveball%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_web" title="Template:Cite web">cite web</a>}}</code>: CS1 maint: numeric names: authors list (<a href="/wiki/Category:CS1_maint:_numeric_names:_authors_list" title="Category:CS1 maint: numeric names: authors list">link</a>)</span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.newscientist.com/article/mg20227114.300-revealed-why-curve-balls-are-so-hard-to-hit.html">"Revealed: Why curveballs are so hard to hit"</a>. New Scientist. 2009-06-07<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-10-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Revealed%3A+Why+curveballs+are+so+hard+to+hit&rft.pub=New+Scientist&rft.date=2009-06-07&rft_id=https%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20227114.300-revealed-why-curve-balls-are-so-hard-to-hit.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.wired.com/playbook/2010/10/curveball-illusion/">"A Curveball's Curve? It's All in Your Head"</a>. Wired. 2010-10-19<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-10-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=A+Curveball%27s+Curve%3F+It%27s+All+in+Your+Head&rft.date=2010-10-19&rft_id=https%3A%2F%2Fwww.wired.com%2Fplaybook%2F2010%2F10%2Fcurveball-illusion%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20101023013800/http://uscnews.usc.edu/science_technology/breaking_curveball_too_good_to_be_true.html">"Breaking Curveball Too Good to Be True – USC News"</a>. Uscnews.usc.edu. 2010-10-13. Archived from <a rel="nofollow" class="external text" href="http://uscnews.usc.edu/science_technology/breaking_curveball_too_good_to_be_true.html">the original</a> on 2010-10-23<span class="reference-accessdate">. Retrieved <span class="nowrap">2010-10-27</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Breaking+Curveball+Too+Good+to+Be+True+%E2%80%93+USC+News&rft.pub=Uscnews.usc.edu&rft.date=2010-10-13&rft_id=http%3A%2F%2Fuscnews.usc.edu%2Fscience_technology%2Fbreaking_curveball_too_good_to_be_true.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShapiroLuHuangKnight2010" class="citation journal cs1">Shapiro, Arthur; Lu, Zhong-Lin; Huang, Chang-Bing; Knight, Emily; Ennis, Robert (2010-10-13). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2954145">"Transitions between Central and Peripheral Vision Create Spatial/Temporal Distortions: A Hypothesis Concerning the Perceived Break of the Curveball"</a>. <i>PLOS ONE</i>. <b>5</b> (10): e13296. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2010PLoSO...513296S">2010PLoSO...513296S</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1371%2Fjournal.pone.0013296">10.1371/journal.pone.0013296</a></span>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2954145">2954145</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/20967247">20967247</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=PLOS+ONE&rft.atitle=Transitions+between+Central+and+Peripheral+Vision+Create+Spatial%2FTemporal+Distortions%3A+A+Hypothesis+Concerning+the+Perceived+Break+of+the+Curveball&rft.volume=5&rft.issue=10&rft.pages=e13296&rft.date=2010-10-13&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2954145%23id-name%3DPMC&rft_id=info%3Apmid%2F20967247&rft_id=info%3Adoi%2F10.1371%2Fjournal.pone.0013296&rft_id=info%3Abibcode%2F2010PLoSO...513296S&rft.aulast=Shapiro&rft.aufirst=Arthur&rft.au=Lu%2C+Zhong-Lin&rft.au=Huang%2C+Chang-Bing&rft.au=Knight%2C+Emily&rft.au=Ennis%2C+Robert&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC2954145&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMcDermott2017" class="citation book cs1">McDermott, Terry (May 16, 2017). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=wPmcBAAAQBAJ&q=yellow+hammer"><i>Off Speed: Baseball, Pitching, and the Art of Deception</i></a>. Knopf Doubleday. p. 46. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780307908896" title="Special:BookSources/9780307908896"><bdi>9780307908896</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Off+Speed%3A+Baseball%2C+Pitching%2C+and+the+Art+of+Deception&rft.pages=46&rft.pub=Knopf+Doubleday&rft.date=2017-05-16&rft.isbn=9780307908896&rft.aulast=McDermott&rft.aufirst=Terry&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DwPmcBAAAQBAJ%26q%3Dyellow%2Bhammer&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKatz2022" class="citation book cs1">Katz, Stephen (2022). <i>Candy Cummings: The Life and Career of the Inventor of the Curveball</i>. Jefferson, NC: McFarland & Co. pp. 26–28, 57–77. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4766-8037-8" title="Special:BookSources/978-1-4766-8037-8"><bdi>978-1-4766-8037-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Candy+Cummings%3A+The+Life+and+Career+of+the+Inventor+of+the+Curveball&rft.place=Jefferson%2C+NC&rft.pages=26-28%2C+57-77&rft.pub=McFarland+%26+Co.&rft.date=2022&rft.isbn=978-1-4766-8037-8&rft.aulast=Katz&rft.aufirst=Stephen&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKatz2022" class="citation book cs1">Katz, Stephen Robert (2022-03-31). <i>Candy Cummings</i>. McFarland. pp. 71–76. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4766-8037-8" title="Special:BookSources/978-1-4766-8037-8"><bdi>978-1-4766-8037-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Candy+Cummings&rft.pages=71-76&rft.pub=McFarland&rft.date=2022-03-31&rft.isbn=978-1-4766-8037-8&rft.aulast=Katz&rft.aufirst=Stephen+Robert&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-1869chrono-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-1869chrono_15-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKatz2022" class="citation book cs1">Katz, Stephen (2022). <i>Candy Cummings: The Life and Career of the Inventor of the Curveball</i>. Jefferson, NC: McFarland & Co. pp. 57–71. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4766-8037-8" title="Special:BookSources/978-1-4766-8037-8"><bdi>978-1-4766-8037-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Candy+Cummings%3A+The+Life+and+Career+of+the+Inventor+of+the+Curveball&rft.place=Jefferson%2C+NC&rft.pages=57-71&rft.pub=McFarland+%26+Co.&rft.date=2022&rft.isbn=978-1-4766-8037-8&rft.aulast=Katz&rft.aufirst=Stephen&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEgan2008" class="citation book cs1">Egan, James M. Jr. (21 May 2008). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=CdyMqAs9Cm4C&q=%22Clarence+Emir+Allen%22+baseball&pg=PA75"><i>Base Ball on the Western Reserve: The Early Game in Cleveland and Northeast Ohio, Year by Year and Town by Town, 1865-1900</i></a>. McFarland. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9780786430673" title="Special:BookSources/9780786430673"><bdi>9780786430673</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">9 May</span> 2018</span> – via Google Books.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Base+Ball+on+the+Western+Reserve%3A+The+Early+Game+in+Cleveland+and+Northeast+Ohio%2C+Year+by+Year+and+Town+by+Town%2C+1865-1900&rft.pub=McFarland&rft.date=2008-05-21&rft.isbn=9780786430673&rft.aulast=Egan&rft.aufirst=James+M.+Jr.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DCdyMqAs9Cm4C%26q%3D%2522Clarence%2BEmir%2BAllen%2522%2Bbaseball%26pg%3DPA75&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://dks.library.kent.edu/cgi-bin/kentstate?a=d&d=tks19270428-01.2.32">"The Kent Stater 28 April 1927 — Kent State University"</a>. <i>dks.library.kent.edu</i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 May</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=dks.library.kent.edu&rft.atitle=The+Kent+Stater+28+April+1927+%E2%80%94+Kent+State+University&rft_id=https%3A%2F%2Fdks.library.kent.edu%2Fcgi-bin%2Fkentstate%3Fa%3Dd%26d%3Dtks19270428-01.2.32&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20140224055757/http://faculty.uscupstate.edu/jpellegrino/articles/scollardencyclopediaarticle.htm">"Clinton Scollard"</a>. Archived from <a rel="nofollow" class="external text" href="http://faculty.uscupstate.edu/jpellegrino/articles/scollardencyclopediaarticle.htm">the original</a> on 2014-02-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-03-23</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Clinton+Scollard&rft_id=http%3A%2F%2Ffaculty.uscupstate.edu%2Fjpellegrino%2Farticles%2Fscollardencyclopediaarticle.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=dBEbAAAAYAAJ&pg=PA924">"St. Nicholas"</a>. Scribner & Company. 9 May 1885<span class="reference-accessdate">. Retrieved <span class="nowrap">9 May</span> 2018</span> – via Google Books.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=St.+Nicholas&rft.pub=Scribner+%26+Company&rft.date=1885-05-09&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DdBEbAAAAYAAJ%26pg%3DPA924&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKatz2022" class="citation book cs1">Katz, Stephen (2022). <i>Candy Cummings: The Life and Career of the Inventor of the Curveball</i>. McFarland & Co. pp. 69, 206n80. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-4766-8037-8" title="Special:BookSources/978-1-4766-8037-8"><bdi>978-1-4766-8037-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Candy+Cummings%3A+The+Life+and+Career+of+the+Inventor+of+the+Curveball&rft.pages=69%2C+206n80&rft.pub=McFarland+%26+Co.&rft.date=2022&rft.isbn=978-1-4766-8037-8&rft.aulast=Katz&rft.aufirst=Stephen&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://news.harvard.edu/gazette/story/2012/04/eliot-house/">"A look inside: Eliot House"</a>. <i><a href="/wiki/Harvard_Gazette" class="mw-redirect" title="Harvard Gazette">Harvard Gazette</a></i>. 2012-04-19<span class="reference-accessdate">. Retrieved <span class="nowrap">14 October</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Harvard+Gazette&rft.atitle=A+look+inside%3A+Eliot+House&rft.date=2012-04-19&rft_id=http%3A%2F%2Fnews.harvard.edu%2Fgazette%2Fstory%2F2012%2F04%2Feliot-house%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKiara_F._Z._Barrow2013" class="citation web cs1">Kiara F. Z. Barrow (7 November 2013). <a rel="nofollow" class="external text" href="http://www.thecrimson.com/article/2013/11/7/throwback-thursday-baseball/">"Throwback Thursday"</a>. <i><a href="/wiki/Harvard_Crimson" title="Harvard Crimson">Harvard Crimson</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">9 May</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Harvard+Crimson&rft.atitle=Throwback+Thursday&rft.date=2013-11-07&rft.au=Kiara+F.+Z.+Barrow&rft_id=http%3A%2F%2Fwww.thecrimson.com%2Farticle%2F2013%2F11%2F7%2Fthrowback-thursday-baseball%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="sabr.org" class="citation web cs1">Herschberger, Richard. <a rel="nofollow" class="external text" href="https://sabr.org/journal/article/with-a-deliberate-attempt-to-deceive-correcting-a-quotation-misattributed-to-charles-eliot-president-of-harvard/">"With a Deliberate Attempt to Deceive"</a>. <i>SABR - Society for American Baseball Research</i>. Baseball Research Journal, Spring 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">30 July</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=SABR+-+Society+for+American+Baseball+Research&rft.atitle=With+a+Deliberate+Attempt+to+Deceive&rft.aulast=Herschberger&rft.aufirst=Richard&rft_id=https%3A%2F%2Fsabr.org%2Fjournal%2Farticle%2Fwith-a-deliberate-attempt-to-deceive-correcting-a-quotation-misattributed-to-charles-eliot-president-of-harvard%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://sabr.org/journal/article/with-a-deliberate-attempt-to-deceive-correcting-a-quotation-misattributed-to-charles-eliot-president-of-harvard/#sdendnote2sym">"Give the Batsman a Chance"</a>. <i>New York Clipper - cited in the Herschberger article cited above</i>. Vol. XXXI, no. 44, Column 3. New York Clipper. January 19, 1884<span class="reference-accessdate">. Retrieved <span class="nowrap">30 July</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=New+York+Clipper+-+cited+in+the+Herschberger+article+cited+above.&rft.atitle=Give+the+Batsman+a+Chance&rft.volume=XXXI&rft.issue=44%2C+Column+3&rft.date=1884-01-19&rft_id=https%3A%2F%2Fsabr.org%2Fjournal%2Farticle%2Fwith-a-deliberate-attempt-to-deceive-correcting-a-quotation-misattributed-to-charles-eliot-president-of-harvard%2F%23sdendnote2sym&rfr_id=info%3Asid%2Fen.wikipedia.org%3ACurveball" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Curveball&action=edit&section=10" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Curveballs" class="extiw" title="commons:Category:Curveballs">Curveballs</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20110607205244/http://bioproj.sabr.org/bioproj.cfm?a=v&v=l&pid=3130&bid=1276">Version 1: Candy Cummings was the inventor of the curveball</a></li> <li><a rel="nofollow" class="external text" href="https://baseballbiography.com/candy-cummings">Version 2: Fred Goldsmith: co-inventor of the curveball or pitcher who gave first recorded demonstration of the curveball?</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160106161036/http://joeyhuangnyc.webs.com/curveball.html">Aerodynamics of a Curveball in Navier-Stokes Flow</a></li> <li><a rel="nofollow" class="external text" href="https://www.researchgate.net/publication/228563551_Trajectory_of_a_moving_curveball_in_viscid_flow">Trajectory of a Moving Curveball in Viscid Flow</a></li> <li><a rel="nofollow" class="external text" href="https://www.wikihow.com/Throw-a-Curveball">How to Throw a Curveball</a> – wikiHow page outlining technique</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="Baseball_pitches" style="padding:3px"><table class="nowraplinks mw-collapsible expanded navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Baseball_pitches" title="Template:Baseball pitches"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Baseball_pitches" title="Template talk:Baseball pitches"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Baseball_pitches" title="Special:EditPage/Template:Baseball pitches"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Baseball_pitches" style="font-size:114%;margin:0 4em"><a href="/wiki/Pitch_(baseball)" title="Pitch (baseball)">Baseball pitches</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fastball" title="Fastball">Fastballs</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cut_fastball" title="Cut fastball">Cutter</a></li> <li><a href="/wiki/Four-seam_fastball" title="Four-seam fastball">Four-seam</a></li> <li><a href="/wiki/Two-seam_fastball" title="Two-seam fastball">Two-seam</a></li> <li><a href="/wiki/Shuuto" title="Shuuto">Shuuto</a></li> <li><a href="/wiki/Sinker_(pitch)" title="Sinker (pitch)">Sinker</a></li> <li><a href="/wiki/Gyroball" title="Gyroball">Gyroball</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Off-speed_pitch" title="Off-speed pitch">Off-speed pitches</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Breaking_ball" title="Breaking ball">Breaking balls</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Curveball</a> <ul><li><a href="/wiki/12%E2%80%936_curveball" title="12–6 curveball">12–6</a></li> <li><a href="/wiki/Knuckle_curve" title="Knuckle curve">knuckle curve</a></li></ul></li> <li><a href="/wiki/Screwball" title="Screwball">Screwball</a></li> <li><a href="/wiki/Slider_(pitch)" title="Slider (pitch)">Slider</a> <ul><li><a href="/wiki/Sweeper_(baseball)" class="mw-redirect" title="Sweeper (baseball)">sweeper</a></li></ul></li> <li><a href="/wiki/Slurve" title="Slurve">Slurve</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Changeup" title="Changeup">Changeups</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Circle_changeup" title="Circle changeup">Circle changeup</a></li> <li><a href="/wiki/Forkball" title="Forkball">Forkball</a></li> <li><a href="/wiki/Fosh_(baseball)" title="Fosh (baseball)">Fosh</a></li> <li><a href="/wiki/Palmball" title="Palmball">Palmball</a></li> <li><a href="/wiki/Split-finger_fastball" title="Split-finger fastball">Splitter</a></li> <li><a href="/wiki/Straight_changeup" class="mw-redirect" title="Straight changeup">Straight changeup</a></li> <li><a href="/wiki/Vulcan_changeup" title="Vulcan changeup">Vulcan changeup</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Off-speed_pitch" title="Off-speed pitch">Junk pitches</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Eephus_pitch" title="Eephus pitch">Eephus pitch</a></li> <li><a href="/wiki/Knuckleball" title="Knuckleball">Knuckleball</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Glossary_of_baseball_(P)#purpose_pitch" class="mw-redirect" title="Glossary of baseball (P)">Purpose pitches</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Inside_pitching" title="Inside pitching">Inside pitching</a> <ul><li><a href="/wiki/Brushback_pitch" title="Brushback pitch">brushback</a></li></ul></li> <li><a href="/wiki/Intentional_base_on_balls" title="Intentional base on balls">Intentional walk</a> <ul><li><a href="/wiki/Pitchout" title="Pitchout">pitchout</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Illegal pitches</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Beanball" title="Beanball">Beanball</a></li> <li><a href="/wiki/Emery_ball" title="Emery ball">Emery ball</a></li> <li><a href="/wiki/Shine_ball" class="mw-redirect" title="Shine ball">Shine ball</a></li> <li><a href="/wiki/Spitball" title="Spitball">Spitball</a></li> <li><a href="/wiki/Quick_pitch" class="mw-redirect" title="Quick pitch">Quick pitch</a></li> <li><a href="/wiki/2021_pitch_doctoring_controversy" title="2021 pitch doctoring controversy">2021 pitch doctoring controversy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Balk" title="Balk">Balk</a></li> <li><a href="/wiki/Wild_pitch" title="Wild pitch">Wild pitch</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Deliveries</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pitching_position" title="Pitching position">Pitching position</a></li> <li><a href="/wiki/Overhand_throw" title="Overhand throw">Overhand</a></li> <li><a href="/wiki/Sidearm_(baseball)" title="Sidearm (baseball)">Sidearm</a></li> <li><a href="/wiki/Submarine_(baseball)" title="Submarine (baseball)">Submarine</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Strike_zone" title="Strike zone">Strike zone</a></li> <li><i><a href="/wiki/The_Neyer/James_Guide_to_Pitchers" title="The Neyer/James Guide to Pitchers">The Neyer/James Guide to Pitchers</a></i> (2004 book)</li> <li><i><a href="/wiki/Knuckleball!" title="Knuckleball!">Knuckleball!</a></i> (2012 documentary)</li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"></div><div role="navigation" class="navbox" aria-labelledby="Baseball_and_softball_concepts" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Baseball" title="Template:Baseball"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Baseball" title="Template talk:Baseball"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Baseball" title="Special:EditPage/Template:Baseball"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Baseball_and_softball_concepts" style="font-size:114%;margin:0 4em"><a href="/wiki/Baseball" title="Baseball">Baseball</a> and <a href="/wiki/Softball" title="Softball">softball</a> concepts</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div><b><a href="/wiki/Outline_of_baseball" title="Outline of baseball">Outline</a></b> · <b><a href="/wiki/Glossary_of_baseball_terms" title="Glossary of baseball terms">Glossary</a></b></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Rules</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Baseball_rules" title="Baseball rules">Rules of baseball</a></li> <li><a href="/wiki/Ejection_(baseball)" class="mw-redirect" title="Ejection (baseball)">Ejections</a></li> <li><a href="/wiki/Ground_rules" title="Ground rules">Ground rules</a></li> <li><a href="/wiki/Infield_fly_rule" title="Infield fly rule">Infield fly rule</a></li> <li><a href="/wiki/In_flight" title="In flight">In flight</a></li> <li><a href="/wiki/Interference_(baseball)" title="Interference (baseball)">Interference</a></li> <li><a href="/wiki/Pitch_clock" title="Pitch clock">Pitch clock</a></li> <li><a href="/wiki/Protested_game" title="Protested game">Protested game</a></li> <li><a href="/wiki/Strike_zone" title="Strike zone">Strike zone</a></li> <li><a href="/wiki/Suspended_game" title="Suspended game">Suspended game</a></li> <li><a href="/wiki/Unwritten_rules_of_baseball" title="Unwritten rules of baseball">Unwritten rules</a></li> <li><a href="/wiki/Cheating_in_baseball" title="Cheating in baseball">Cheating</a></li> <li><a href="/wiki/Comparison_of_baseball_and_softball" title="Comparison of baseball and softball">Comparison of baseball and softball</a> <ul><li><a href="/wiki/Fastpitch_softball" title="Fastpitch softball">fastpitch softball</a></li> <li><a href="/wiki/16-inch_softball" title="16-inch softball">16-inch softball</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ballpark" title="Ballpark">Ballpark</a>/<a href="/wiki/Baseball_field" title="Baseball field">field</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Backstop_(baseball)" class="mw-redirect" title="Backstop (baseball)">Backstop</a></li> <li><a href="/wiki/Baseball_field" title="Baseball field">Baseball diamond</a></li> <li><a href="/wiki/Batter%27s_box" class="mw-redirect" title="Batter's box">Batter's box</a></li> <li><a href="/wiki/Batter%27s_eye" title="Batter's eye">Batter's eye</a></li> <li><a href="/wiki/Bullpen" title="Bullpen">Bullpen</a></li> <li><a href="/wiki/Dugout_(baseball)" title="Dugout (baseball)">Dugout</a></li> <li><a href="/wiki/Foul_pole" class="mw-redirect" title="Foul pole">Foul pole</a></li> <li><a href="/wiki/Foul_ball" title="Foul ball">Foul territory</a></li> <li><a href="/wiki/Infield" title="Infield">Infield</a></li> <li><a href="/wiki/On-deck" title="On-deck">On-deck circle</a></li> <li><a href="/wiki/Outfield" title="Outfield">Outfield</a></li> <li><a href="/wiki/Warning_track" title="Warning track">Warning track</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Baseball_clothing_and_equipment" title="Baseball clothing and equipment">Equipment</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Baseball_(ball)" title="Baseball (ball)">Ball</a></li> <li><a href="/wiki/Baseball_bat" title="Baseball bat">Bat</a></li> <li><a href="/wiki/Batting_cage" title="Batting cage">Batting cage</a></li> <li><a href="/wiki/Batting_glove" title="Batting glove">Batting glove</a></li> <li><a href="/wiki/Batting_helmet" title="Batting helmet">Batting helmet</a></li> <li><a href="/wiki/Baseball_cap" title="Baseball cap">Cap</a></li> <li><a href="/wiki/Baseball_doughnut" title="Baseball doughnut">Doughnut</a></li> <li><a href="/wiki/Baseball_glove" title="Baseball glove">Glove (defense)</a></li> <li><a href="/wiki/Pitching_machine" title="Pitching machine">Pitching machine</a></li> <li><a href="/wiki/Jockstrap#Protective_cup" title="Jockstrap">Protective cup</a></li> <li><a href="/wiki/Shin_guard" title="Shin guard">Shin guard</a></li> <li><a href="/wiki/Baseball_stirrups" title="Baseball stirrups">Stirrups</a></li> <li><a href="/wiki/Baseball_uniform" title="Baseball uniform">Uniform</a></li> <li><a href="/wiki/Uniform_number_(Major_League_Baseball)" title="Uniform number (Major League Baseball)">Uniform number</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Game process</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Batting_order_(baseball)" title="Batting order (baseball)">Batting order</a></li> <li><a href="/wiki/Inning" title="Inning">Innings</a> <ul><li><a href="/wiki/Extra_innings" title="Extra innings">extra innings</a></li></ul></li> <li><a href="/wiki/Out_(baseball)" title="Out (baseball)">Out</a></li> <li><a href="/wiki/Baseball_positions" title="Baseball positions">Positions</a></li> <li><a href="/wiki/Run_(baseball)" title="Run (baseball)">Run</a></li> <li><a href="/wiki/Pace_of_play" title="Pace of play">Pace of play</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Batting_(baseball)" title="Batting (baseball)">Batting</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/At_bat" title="At bat">At bat</a></li> <li><a href="/wiki/Baltimore_chop" class="mw-redirect" title="Baltimore chop">Baltimore chop</a></li> <li><a href="/wiki/Bat_flip" title="Bat flip">Bat flip</a></li> <li><a href="/wiki/Batted_ball" title="Batted ball">Batted ball</a></li> <li><a href="/wiki/Count_(baseball)" title="Count (baseball)">Batting count</a></li> <li><a href="/wiki/Batting_out_of_turn" title="Batting out of turn">Batting out of order</a></li> <li><a href="/wiki/Bunt_(baseball)" title="Bunt (baseball)">Bunt</a> <ul><li><a href="/wiki/Sacrifice_bunt" title="Sacrifice bunt">sacrifice bunt</a></li> <li><a href="/wiki/Slap_bunt" title="Slap bunt">slap bunt</a></li> <li><a href="/wiki/Squeeze_play_(baseball)" title="Squeeze play (baseball)">squeeze play</a></li></ul></li> <li><a href="/wiki/Charging_the_mound" title="Charging the mound">Charging the mound</a></li> <li><a href="/wiki/Checked_swing" title="Checked swing">Checked swing</a></li> <li><a href="/wiki/Cleanup_hitter" title="Cleanup hitter">Cleanup hitter</a></li> <li><a href="/wiki/Designated_hitter" title="Designated hitter">Designated hitter</a></li> <li><a href="/wiki/Double_(baseball)" title="Double (baseball)">Double</a></li> <li><a href="/wiki/Double_switch_(baseball)" title="Double switch (baseball)">Double switch</a></li> <li><a href="/wiki/Foul_ball" title="Foul ball">Foul ball</a></li> <li><a href="/wiki/Foul_tip" title="Foul tip">Foul tip</a></li> <li><a href="/wiki/Golden_sombrero" title="Golden sombrero">Golden sombrero</a></li> <li><a href="/wiki/Ground_rule_double" title="Ground rule double">Ground rule double</a></li> <li><a href="/wiki/Hat-trick#Baseball" title="Hat-trick">Hat trick</a></li> <li><a href="/wiki/Hit_(baseball)" title="Hit (baseball)">Hit</a></li> <li><a href="/wiki/Hit_and_run_(baseball)" title="Hit and run (baseball)">Hit and run</a></li> <li><a href="/wiki/Hit_by_pitch" title="Hit by pitch">Hit by pitch</a></li> <li><a href="/wiki/Hitting_for_the_cycle" title="Hitting for the cycle">Hitting for the cycle</a></li> <li><a href="/wiki/Home_run" title="Home run">Home run</a> <ul><li><a href="/wiki/Grand_slam_(baseball)" title="Grand slam (baseball)">Grand slam</a></li> <li><a href="/wiki/Inside-the-park_home_run" title="Inside-the-park home run">Inside-the-park</a></li> <li><a href="/wiki/Walk-off_home_run" title="Walk-off home run">Walk-off</a></li> <li><a href="/wiki/Moonshot_(baseball)" class="mw-redirect" title="Moonshot (baseball)">Moonshot</a></li> <li><a href="/wiki/Chinese_home_run" title="Chinese home run">Chinese</a></li></ul></li> <li><a href="/wiki/Infield_hit" title="Infield hit">Infield hit</a></li> <li><a href="/wiki/Leadoff_hitter" title="Leadoff hitter">Leadoff hitter</a></li> <li><a href="/wiki/Lefty-righty_switch" title="Lefty-righty switch">Lefty-righty switch</a></li> <li><a href="/wiki/Line_drive" class="mw-redirect" title="Line drive">Line drive</a></li> <li><a href="/wiki/Mendoza_Line" title="Mendoza Line">Mendoza Line</a></li> <li><a href="/wiki/On-deck" title="On-deck">On-deck</a></li> <li><a href="/wiki/Plate_appearance" title="Plate appearance">Plate appearance</a></li> <li><a href="/wiki/Platoon_system" title="Platoon system">Platoon system</a></li> <li><a href="/wiki/Pull_hitter" title="Pull hitter">Pull hitter</a></li> <li><a href="/wiki/Sacrifice_fly" title="Sacrifice fly">Sacrifice fly</a></li> <li><a href="/wiki/Single_(baseball)" title="Single (baseball)">Single</a></li> <li><a href="/wiki/Strikeout" title="Strikeout">Strikeout</a></li> <li><a href="/wiki/Strike_zone" title="Strike zone">Strike zone</a></li> <li><a href="/wiki/Sweet_spot_(sports)" title="Sweet spot (sports)">Sweet spot</a></li> <li><a href="/wiki/Switch_hitter" title="Switch hitter">Switch hitter</a></li> <li><a href="/wiki/Triple_(baseball)" title="Triple (baseball)">Triple</a></li> <li><a href="/wiki/Base_on_balls" title="Base on balls">Walk</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Pitch_(baseball)" title="Pitch (baseball)">Pitching</a><br /><a href="/wiki/Pitch_(softball)" title="Pitch (softball)">(softball)</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Balk" title="Balk">Balk</a></li> <li><a href="/wiki/Beanball" title="Beanball">Beanball</a></li> <li><a href="/wiki/Breaking_ball" title="Breaking ball">Breaking ball</a></li> <li><a href="/wiki/Brushback_pitch" title="Brushback pitch">Brushback pitch</a></li> <li><a href="/wiki/Changeup" title="Changeup">Changeup</a> <ul><li><a href="/wiki/Vulcan_changeup" title="Vulcan changeup">Vulcan changeup</a></li></ul></li> <li><a class="mw-selflink selflink">Curveball</a></li> <li><a href="/wiki/Eephus_pitch" title="Eephus pitch">Eephus</a></li> <li><a href="/wiki/Emery_ball" title="Emery ball">Emery ball</a></li> <li><a href="/wiki/Fastball" title="Fastball">Fastball</a> <ul><li><a href="/wiki/Two-seam_fastball" title="Two-seam fastball">two-seam</a></li> <li><a href="/wiki/Four-seam_fastball" title="Four-seam fastball">four-seam</a></li> <li><a href="/wiki/Cut_fastball" title="Cut fastball">cutter</a></li> <li><a href="/wiki/Sinker_(pitch)" title="Sinker (pitch)">sinker</a></li> <li><a href="/wiki/Split-finger_fastball" title="Split-finger fastball">split-finger</a></li></ul></li> <li><a href="/wiki/Full_count" class="mw-redirect" title="Full count">Full count</a></li> <li><a href="/wiki/List_of_Major_League_Baseball_pitchers_who_have_thrown_an_immaculate_inning" title="List of Major League Baseball pitchers who have thrown an immaculate inning">Immaculate inning</a></li> <li><a href="/wiki/Inside_pitching" title="Inside pitching">Inside pitching</a></li> <li><a href="/wiki/Intentional_balk" title="Intentional balk">Intentional balk</a></li> <li><a href="/wiki/Intentional_base_on_balls" title="Intentional base on balls">Intentional walk</a></li> <li><a href="/wiki/Knuckleball" title="Knuckleball">Knuckleball</a></li> <li><a href="/wiki/Maddux_(statistic)" title="Maddux (statistic)">Maddux</a></li> <li><a href="/wiki/No-hitter" title="No-hitter">No-hitter</a></li> <li><a href="/wiki/Perfect_game_(baseball)" title="Perfect game (baseball)">Perfect game</a></li> <li><a href="/wiki/Pickoff" title="Pickoff">Pickoff</a></li> <li><a href="/wiki/Pitch_count" title="Pitch count">Pitch count</a></li> <li><a href="/wiki/Pitching_position" title="Pitching position">Pitching position</a></li> <li><a href="/wiki/Pitchout" title="Pitchout">Pitchout</a></li> <li><a href="/wiki/Quick_pitch" class="mw-redirect" title="Quick pitch">Quick pitch</a></li> <li><a href="/wiki/Screwball" title="Screwball">Screwball</a></li> <li><a href="/wiki/Shutout_(baseball)" title="Shutout (baseball)">Shutout</a></li> <li><a href="/wiki/Slider_(pitch)" title="Slider (pitch)">Slider</a></li> <li><a href="/wiki/Spitball" title="Spitball">Spitball</a></li> <li><a href="/wiki/Strikeout" title="Strikeout">Strikeout</a></li> <li><a href="/wiki/Strike_zone" title="Strike zone">Strike zone</a></li> <li><a href="/wiki/Striking_out_the_side" title="Striking out the side">Striking out the side</a></li> <li><a href="/wiki/Switch_pitcher" title="Switch pitcher">Switch pitcher</a></li> <li><a href="/wiki/Time_of_pitch" class="mw-redirect" title="Time of pitch">Time of pitch</a></li> <li><a href="/wiki/Wild_pitch" title="Wild pitch">Wild pitch</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Base_running" title="Base running">Base running</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Balk" title="Balk">Balk</a></li> <li><a href="/wiki/Bases_loaded" class="mw-redirect" title="Bases loaded">Bases loaded</a></li> <li><a href="/wiki/Caught_stealing" title="Caught stealing">Caught stealing</a></li> <li><a href="/wiki/Hit_and_run_(baseball)" title="Hit and run (baseball)">Hit and run</a></li> <li><a href="/wiki/Lead_off" title="Lead off">Lead off</a></li> <li><a href="/wiki/Left_on_base" class="mw-redirect" title="Left on base">Left on base</a></li> <li><a href="/wiki/Obstruction_(baseball)" title="Obstruction (baseball)">Obstruction</a></li> <li><a href="/wiki/Rundown" title="Rundown">Rundown</a></li> <li><a href="/wiki/Safe_(baseball)" title="Safe (baseball)">Safe</a></li> <li><a href="/wiki/Scoring_position" title="Scoring position">Scoring position</a></li> <li><a href="/wiki/Slide_(baseball)" title="Slide (baseball)">Slide</a></li> <li><a href="/wiki/Small_ball_(baseball)" title="Small ball (baseball)">Small ball</a></li> <li><a href="/wiki/Squeeze_play_(baseball)" title="Squeeze play (baseball)">Squeeze play</a></li> <li><a href="/wiki/Stolen_base" title="Stolen base">Stolen base</a></li> <li><a href="/wiki/Tag_up" title="Tag up">Tag up</a></li> <li><a href="/wiki/Tie_goes_to_the_runner" title="Tie goes to the runner">Tie goes to the runner</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fielding<br /><a href="/wiki/Baseball_positioning" title="Baseball positioning">(positioning)</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Appeal_play" title="Appeal play">Appeal play</a></li> <li><a href="/wiki/Assist_(baseball)" title="Assist (baseball)">Assist</a></li> <li><a href="/wiki/Blocking_the_plate" title="Blocking the plate">Blocking the plate</a></li> <li><a href="/wiki/Catch_(baseball)" title="Catch (baseball)">Catch</a></li> <li><a href="/wiki/Caught_stealing" title="Caught stealing">Caught stealing</a></li> <li><a href="/wiki/Covering_a_base" title="Covering a base">Covering a base</a></li> <li><a href="/wiki/Defensive_indifference" class="mw-redirect" title="Defensive indifference">Defensive indifference</a></li> <li><a href="/wiki/Double_play" title="Double play">Double play</a></li> <li><a href="/wiki/Error_(baseball)" title="Error (baseball)">Error</a></li> <li><a href="/wiki/Fielder%27s_choice" title="Fielder's choice">Fielder's choice</a></li> <li><a href="/wiki/Fifth_infielder" title="Fifth infielder">Fifth infielder</a></li> <li><a href="/wiki/Force_play" title="Force play">Force play</a></li> <li><a href="/wiki/Fourth_out" title="Fourth out">Fourth out</a></li> <li><a href="/wiki/Hidden_ball_trick" title="Hidden ball trick">Hidden ball trick</a></li> <li><a href="/wiki/In-between_hop" title="In-between hop">In-between hop</a></li> <li><a href="/wiki/Infield_fly_rule" title="Infield fly rule">Infield fly rule</a></li> <li><a href="/wiki/Infield_shift" title="Infield shift">Infield shift</a></li> <li><a href="/wiki/Interference_(baseball)" title="Interference (baseball)">Interference</a></li> <li><a href="/wiki/Neighborhood_play" title="Neighborhood play">Neighborhood play</a></li> <li><a href="/wiki/Passed_ball" title="Passed ball">Passed ball</a></li> <li><a href="/wiki/Pickoff" title="Pickoff">Pickoff</a></li> <li><a href="/wiki/Putout" title="Putout">Putout</a></li> <li><a href="/wiki/Rundown" title="Rundown">Rundown</a></li> <li><a href="/wiki/Tag_out" title="Tag out">Tag out</a></li> <li><a href="/wiki/Triple_play" title="Triple play">Triple play</a> <ul><li><a href="/wiki/Unassisted_triple_play" title="Unassisted triple play">unassisted</a></li></ul></li> <li><a href="/wiki/Uncaught_third_strike" title="Uncaught third strike">Uncaught third strike</a></li> <li><a href="/wiki/Wall_climb" title="Wall climb">Wall climb</a></li> <li><a href="/wiki/Wheel_play" title="Wheel play">Wheel play</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Baseball_card" title="Baseball card">Baseball card</a></li> <li><a href="/wiki/Baseball_statistics" title="Baseball statistics">Baseball statistics</a></li> <li><a href="/wiki/Bench_jockey" class="mw-redirect" title="Bench jockey">Bench jockey</a></li> <li><a href="/wiki/Bench-clearing_brawl" title="Bench-clearing brawl">Bench-clearing brawl</a></li> <li><a href="/wiki/Dead_ball#Baseball" title="Dead ball">Dead ball</a></li> <li><a href="/wiki/Doubleheader_(baseball)" title="Doubleheader (baseball)">Doubleheader</a></li> <li><a href="/wiki/Glossary_of_baseball_terms" title="Glossary of baseball terms">Jargon</a></li> <li><a href="/wiki/Injured_list" title="Injured list">Injured list</a></li> <li><a href="/wiki/List_of_baseball_films" title="List of baseball films">List of baseball films</a></li> <li><a href="/wiki/Pepper_(baseball)" title="Pepper (baseball)">Pepper</a></li> <li><a href="/wiki/Baseball_scorekeeping" title="Baseball scorekeeping">Scorekeeping</a></li> <li><a href="/wiki/Series_(baseball)" title="Series (baseball)">Series</a></li> <li><a href="/wiki/Seventh-inning_stretch" title="Seventh-inning stretch">Seventh-inning stretch</a></li> <li><a href="/wiki/Shagging_(baseball)" title="Shagging (baseball)">Shagging</a></li> <li><a href="/wiki/Sign_stealing" title="Sign stealing">Sign stealing</a></li> <li><a href="/wiki/Slump_(sports)" title="Slump (sports)">Slump</a></li> <li>Streak <ul><li><a href="/wiki/Losing_streak#Baseball" title="Losing streak">losing</a></li> <li><a href="/wiki/Winning_streak#Baseball" title="Winning streak">winning</a></li></ul></li> <li><a href="/wiki/Variations_of_baseball" title="Variations of baseball">Variations of baseball</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><div class="hlist"> <ul><li><b><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Baseball" title="Category:Baseball">Category</a></b></li> <li><b><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Symbol_portal_class.svg" class="mw-file-description" title="Portal"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/16px-Symbol_portal_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/23px-Symbol_portal_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/e2/Symbol_portal_class.svg/31px-Symbol_portal_class.svg.png 2x" data-file-width="180" data-file-height="185" /></a></span> <a href="/wiki/Portal:Baseball" title="Portal:Baseball">Portal</a></b></li> <li><b><span class="noviewer" typeof="mw:File"><span title="WikiProject"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/16px-People_icon.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/24px-People_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/People_icon.svg/32px-People_icon.svg.png 2x" data-file-width="100" data-file-height="100" /></span></span> <a href="/wiki/Wikipedia:WikiProject_Baseball" title="Wikipedia:WikiProject Baseball">WikiProject</a></b></li></ul> </div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Curveball&oldid=1237670718">https://en.wikipedia.org/w/index.php?title=Curveball&oldid=1237670718</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Aerodynamics" title="Category:Aerodynamics">Aerodynamics</a></li><li><a href="/wiki/Category:Baseball_pitches" title="Category:Baseball pitches">Baseball pitches</a></li><li><a href="/wiki/Category:Baseball_plays" title="Category:Baseball plays">Baseball plays</a></li><li><a href="/wiki/Category:Softball_pitches" title="Category:Softball pitches">Softball pitches</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:CS1_maint:_numeric_names:_authors_list" title="Category:CS1 maint: numeric names: authors list">CS1 maint: numeric names: authors list</a></li><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:Articles_needing_additional_references_from_March_2018" title="Category:Articles needing additional references from March 2018">Articles needing additional references from March 2018</a></li><li><a href="/wiki/Category:All_articles_needing_additional_references" title="Category:All articles needing additional references">All articles needing additional references</a></li><li><a href="/wiki/Category:Commons_category_link_is_on_Wikidata" title="Category:Commons category link is on Wikidata">Commons category link is on Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 30 July 2024, at 22:55<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=Curveball&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-gtx6v","wgBackendResponseTime":144,"wgPageParseReport":{"limitreport":{"cputime":"0.606","walltime":"0.766","ppvisitednodes":{"value":1804,"limit":1000000},"postexpandincludesize":{"value":94692,"limit":2097152},"templateargumentsize":{"value":1487,"limit":2097152},"expansiondepth":{"value":13,"limit":100},"expensivefunctioncount":{"value":4,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":106271,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 641.992 1 -total"," 34.96% 224.465 1 Template:Reflist"," 21.49% 137.982 3 Template:Navbox"," 19.25% 123.588 1 Template:Baseball_pitches"," 16.07% 103.158 4 Template:Cite_news"," 15.61% 100.235 1 Template:Short_description"," 11.54% 74.062 1 Template:Unreferenced_section"," 9.92% 63.717 1 Template:Unreferenced"," 9.39% 60.297 1 Template:Ambox"," 8.46% 54.281 2 Template:Pagetype"]},"scribunto":{"limitreport-timeusage":{"value":"0.396","limit":"10.000"},"limitreport-memusage":{"value":6061629,"limit":52428800},"limitreport-logs":"table#1 {\n}\n"},"cachereport":{"origin":"mw-web.codfw.main-f69cdc8f6-pqfbt","timestamp":"20241122143530","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Curveball","url":"https:\/\/en.wikipedia.org\/wiki\/Curveball","sameAs":"http:\/\/www.wikidata.org\/entity\/Q15710733","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q15710733","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2004-02-13T23:02:31Z","dateModified":"2024-07-30T22:55:32Z","image":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/b\/b4\/12-6_Curveball_%28single_frame%29.gif","headline":"type of pitch in baseball"}</script> </body> </html>