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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-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" 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 article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Knuckle_curve" title="Special:EditPage/Knuckle curve">improve this article</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 removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Knuckle+curve%22">"Knuckle curve"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Knuckle+curve%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Knuckle+curve%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Knuckle+curve%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Knuckle+curve%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Knuckle+curve%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">April 2019</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> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Knuckle_curve_1.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/67/Knuckle_curve_1.JPG/210px-Knuckle_curve_1.JPG" decoding="async" width="210" height="280" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/67/Knuckle_curve_1.JPG/315px-Knuckle_curve_1.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/67/Knuckle_curve_1.JPG/420px-Knuckle_curve_1.JPG 2x" data-file-width="960" data-file-height="1280" /></a><figcaption>A common grip used for a knuckle curve</figcaption></figure> <p>In <a href="/wiki/Major_League_Baseball" title="Major League Baseball">Major League</a> history, the term <b>knuckle curve</b> or <b>knuckle curveball</b> has been used to describe three entirely different pitches. All are unrelated to the similar sounding <a href="/wiki/Knuckleball" title="Knuckleball">knuckleball</a>. </p><p>The first, more modern and commonly used pitch called the knuckle curve is really a standard <a href="/wiki/Curveball" title="Curveball">curveball</a>, thrown with one or more of the index or middle fingers bent. According to practitioners, this gives them a better grip on the ball and allows for tighter spin and greater movement. In all other respects, this knuckle curve is identical to the standard curveball. This version of the knuckle curve was used by Major League pitchers <a href="/wiki/Phil_Hughes_(baseball)" title="Phil Hughes (baseball)">Phil Hughes</a> and <a href="/wiki/Brad_Peacock" title="Brad Peacock">Brad Peacock</a> in the 2010s. <a href="/wiki/Mike_Mussina" title="Mike Mussina">Mike Mussina</a> was well known for his incorporation of the pitch into his repertoire. <a href="/wiki/Justin_Verlander" title="Justin Verlander">Justin Verlander</a> formerly threw a knuckle curve but was forced to abandon the pitch due to problems with blisters.<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> This knuckle curve is usually called the <b>spike curve</b> by MLB players and coaches because the pitch is nothing like a <a href="/wiki/Knuckleball" title="Knuckleball">knuckleball</a>. </p><p>The second type of knuckle curve is a <a href="/wiki/Breaking_ball" title="Breaking ball">breaking ball</a> that is thrown with a grip similar to the knuckleball. Unlike a knuckleball, which spins very little, a knuckle curve spins like a normal curveball because the pitcher's index and middle fingers push the top of the ball into a downward curve at the moment of release. Since only two fingers produce the spin, however, a knuckle curve does not spin as fast as a curveball, meaning the break is less sharp and less predictable. Because this knuckle curve can be thrown with the same general motion as a <a href="/wiki/Fastball" title="Fastball">fastball</a>, it is more deceptive than a normal curveball. This kind of knuckle curve is rare. It is easier to control than a standard knuckleball, but still difficult to master. The most famous practitioners of this type of knuckle curve are <a href="/wiki/Burt_Hooton" title="Burt Hooton">Burt Hooton</a>, who pitched for the <a href="/wiki/Chicago_Cubs" title="Chicago Cubs">Chicago Cubs</a> and the <a href="/wiki/Los_Angeles_Dodgers" title="Los Angeles Dodgers">Los Angeles Dodgers</a> from the mid-1970s to mid-1980s, and former reliever <a href="/wiki/Jason_Isringhausen" title="Jason Isringhausen">Jason Isringhausen</a>. </p><p>The third type of knuckle curve was thrown by <a href="/wiki/Dave_Stenhouse" title="Dave Stenhouse">Dave Stenhouse</a> in the 1960s. Stenhouse's knuckle curve was thrown like a fastball but with a knuckleball grip. Stenhouse discovered that this pitch had excellent movement, and when he came to the majors, he utilized it as a breaking pitch. This pitch may have been the same as the knuckleball thrown by <a href="/wiki/Jesse_Haines" title="Jesse Haines">Jesse Haines</a> and <a href="/wiki/Freddie_Fitzsimmons" title="Freddie Fitzsimmons">Freddie Fitzsimmons</a>. The pitch would be perfected by <a href="/wiki/Chicago_White_Sox" title="Chicago White Sox">Chicago White Sox</a> legend <a href="/wiki/Hoyt_Wilhelm" title="Hoyt Wilhelm">Hoyt Wilhelm</a> during the later stages of his career, after flirting with it for most of his time in the majors. </p> <div class="mw-heading mw-heading2"><h2 id="Notable_knuckle_curve_pitchers">Notable knuckle curve pitchers</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Knuckle_curve&action=edit&section=1" title="Edit section: Notable knuckle curve pitchers"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Cody_Allen" title="Cody Allen">Cody Allen</a></li> <li><a href="/wiki/Matt_Anderson_(baseball)" title="Matt Anderson (baseball)">Matt Anderson</a></li> <li><a href="/wiki/Matt_Barnes_(baseball)" title="Matt Barnes (baseball)">Matt Barnes</a></li> <li><a href="/wiki/Dellin_Betances" title="Dellin Betances">Dellin Betances</a></li> <li><a href="/wiki/Shane_Bieber" title="Shane Bieber">Shane Bieber</a></li> <li><a href="/wiki/Archie_Bradley_(baseball)" title="Archie Bradley (baseball)">Archie Bradley</a></li> <li><a href="/wiki/Mike_Bolsinger" title="Mike Bolsinger">Mike Bolsinger</a></li> <li><a href="/wiki/Walker_Buehler" title="Walker Buehler">Walker Buehler</a></li> <li><a href="/wiki/A._J._Burnett" title="A. J. Burnett">A. J. Burnett</a><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></li> <li><a href="/wiki/Alex_Cobb" title="Alex Cobb">Alex Cobb</a></li> <li><a href="/wiki/Gerrit_Cole" title="Gerrit Cole">Gerrit Cole</a></li> <li><a href="/wiki/Wade_Davis_(baseball)" title="Wade Davis (baseball)">Wade Davis</a></li> <li><a href="/wiki/Tyler_Duffey" title="Tyler Duffey">Tyler Duffey</a></li> <li><a href="/wiki/Dillon_Gee" title="Dillon Gee">Dillon Gee</a></li> <li><a href="/wiki/Zack_Godley" title="Zack Godley">Zack Godley</a></li> <li><a href="/wiki/Dan_Haren" title="Dan Haren">Dan Haren</a></li> <li><a href="/wiki/Burt_Hooton" title="Burt Hooton">Burt Hooton</a></li> <li><a href="/wiki/J._P._Howell" title="J. P. Howell">J. P. Howell</a></li> <li><a href="/wiki/Phil_Hughes_(baseball)" title="Phil Hughes (baseball)">Phil Hughes</a></li> <li><a href="/wiki/Jason_Isringhausen" title="Jason Isringhausen">Jason Isringhausen</a></li> <li><a href="/wiki/Joe_Kelly_(pitcher)" title="Joe Kelly (pitcher)">Joe Kelly</a></li> <li><a href="/wiki/Craig_Kimbrel" title="Craig Kimbrel">Craig Kimbrel</a></li> <li><a href="/wiki/German_Marquez" class="mw-redirect" title="German Marquez">German Marquez</a></li> <li><a href="/wiki/Vin_Mazzaro" title="Vin Mazzaro">Vin Mazzaro</a></li> <li><a href="/wiki/Lance_McCullers_Jr." title="Lance McCullers Jr.">Lance McCullers Jr.</a></li> <li><a href="/wiki/James_McDonald_(baseball)" title="James McDonald (baseball)">James McDonald</a></li> <li><a href="/wiki/Mark_Melancon" title="Mark Melancon">Mark Melancon</a></li> <li><a href="/wiki/Mike_Minor_(baseball)" title="Mike Minor (baseball)">Mike Minor</a></li> <li><a href="/wiki/Mike_Mussina" title="Mike Mussina">Mike Mussina</a></li> <li><a href="/wiki/Aaron_Nola" title="Aaron Nola">Aaron Nola</a></li> <li><a href="/wiki/Bobby_Parnell" title="Bobby Parnell">Bobby Parnell</a></li> <li><a href="/wiki/James_Paxton_(baseball)" title="James Paxton (baseball)">James Paxton</a></li> <li><a href="/wiki/Brad_Peacock" title="Brad Peacock">Brad Peacock</a></li> <li><a href="/wiki/Nick_Pivetta" title="Nick Pivetta">Nick Pivetta</a></li> <li><a href="/wiki/Drew_Pomeranz" title="Drew Pomeranz">Drew Pomeranz</a></li> <li><a href="/wiki/David_Robertson_(baseball)" title="David Robertson (baseball)">David Robertson</a></li> <li><a href="/wiki/Jonathan_S%C3%A1nchez" title="Jonathan Sánchez">Jonathan Sánchez</a></li> <li><a href="/wiki/Dave_Stenhouse" title="Dave Stenhouse">Dave Stenhouse</a></li> <li><a href="/wiki/Ross_Stripling" title="Ross Stripling">Ross Stripling</a></li> <li><a href="/wiki/Chris_Tillman" title="Chris Tillman">Chris Tillman</a></li> <li><a href="/wiki/Hoyt_Wilhelm" title="Hoyt Wilhelm">Hoyt Wilhelm</a></li> <li><a href="/wiki/Brandon_Workman" title="Brandon Workman">Brandon Workman</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=Knuckle_curve&action=edit&section=2" 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"> <div class="mw-references-wrap"><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 id="CITEREFMorosi2006" class="citation web cs1">Morosi, Jon Paul (2006-05-01). <a rel="nofollow" class="external text" href="http://www.freep.com/apps/pbcs.dll/article?AID=/20060501/SPORTS02/605010394/1050">"TIGERS CORNER: Polanco's play 'game-changing'<span class="cs1-kern-right"></span>"</a>. <i>Detroit Free Press</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20060624021029/http://www.freep.com/apps/pbcs.dll/article?AID=%2F20060501%2FSPORTS02%2F605010394%2F1050">Archived</a> from the original on 2006-06-24<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-04-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Detroit+Free+Press&rft.atitle=TIGERS+CORNER%3A+Polanco%27s+play+%27game-changing%27&rft.date=2006-05-01&rft.aulast=Morosi&rft.aufirst=Jon+Paul&rft_id=http%3A%2F%2Fwww.freep.com%2Fapps%2Fpbcs.dll%2Farticle%3FAID%3D%2F20060501%2FSPORTS02%2F605010394%2F1050&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKnuckle+curve" 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="http://www.foxsports.com/mlb/story/the-knuckle-curveball-how-it-behaves-and-why-it-is-becoming-so-popular-050814">"How the knuckle-curve works & why it's become so popular"</a>. <i>FOX Sports</i>. 2014-05-08<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-04-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=FOX+Sports&rft.atitle=How+the+knuckle-curve+works+%26+why+it%27s+become+so+popular&rft.date=2014-05-08&rft_id=http%3A%2F%2Fwww.foxsports.com%2Fmlb%2Fstory%2Fthe-knuckle-curveball-how-it-behaves-and-why-it-is-becoming-so-popular-050814&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKnuckle+curve" class="Z3988"></span></span> </li> </ol></div></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=Knuckle_curve&action=edit&section=3" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.thecompletepitcher.com/pitching_grips.htm#q8">How to throw a knuckle curve</a></li> <li><a rel="nofollow" class="external text" href="http://www.pitchingtips.com/how-to-throw-a-knuckle-curveball.htm">How To Throw A Knuckle Curve Ball</a></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:": 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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 href="/wiki/Curveball" title="Curveball">Curveball</a> <ul><li><a href="/wiki/12%E2%80%936_curveball" title="12–6 curveball">12–6</a></li> <li><a class="mw-selflink selflink">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><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=Knuckle_curve&oldid=1241868992">https://en.wikipedia.org/w/index.php?title=Knuckle_curve&oldid=1241868992</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: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></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><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_April_2019" title="Category:Articles needing additional references from April 2019">Articles needing additional references from April 2019</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></ul></div></div> </div> </main> </div> <div 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