A well-timed curveball can be highly beneficial to pitchers, but a curveball is pretty useless if the batter knows it's coming so that he or she has time to adjust to the swing. For that reason, it's important that pitchers not only master the grip and motion of the curveball but also the secrecy of the grip itself, which is necessary for fooling the batter.
When thrown, try to manipulate the pitch to come off of the thumb-side of your index finger – NOT your index- and middle-fingers, as with a two-seam fastball – because a two-finger release will cause the pitch to balance out, which reduces the spin that you are looking for. Most good slider pitchers grip the outer-third of the baseball and cock their wrist slightly, but not stiffly, to their throwing hand's thumb-side upon release of the pitch. This enables a pitcher to apply pressure to the outer-half of the ball with the index finger. Avoid any twisting of the wrist upon release.
Hold the ball so that the u shape is facing you upside down.  If you are a righty do it like this.  Placed your middle finger of you right hand onto the right seem of the upside down u.  place your pointer finger directly beside it.  Place your thumb on the seem on the other side of the ball on the left seem.  Place your ring finger on the bottom of the ball curled up with the pinkey finger beside it.  The pinkey finger should not touch the ball. Here is a picture of the grip.
Releasing the Slider ‘Out in Front maximizes it’s effectiveness.  You are best positioned to finish the pitch and command the Slider to break how you wish. It’s going to break later and be drastically sharper. That what you want in this Dominant Pitch. The more consistently that you do this step, the more consistent your results will be. That’s what coaches and scouts want to see….and I know where you want to be as a pitcher….
Baseball players place a tremendous amount of stress on their arms and the ligaments which control how the arms and shoulders move. By practicing pitching drills which focus on developing and loosening these muscles athletes will be taking a step to avoid costly injuries. By adding core work into the pitching drill athletes will further protect their bodies by building a strong base at the center of their body.
In the final phase of this preventative pitching drill the athletes will both face forward. The athlete performing the shoulder portion of the pitching drill will place the KB Powerbands in their outside hand as they laterally lunge and extend their arm away from their body. During this motion it is important athletes use a controlled motion while keeping the arm extended and moving in a straight line. Athletes need to maintain greater control and a slower pace as they bring the hand back toward the body in a controlled motion.
B) Twist or snap your wrist: In this brief pitching video I explain this myth in greater detail. If you twist your wrist right before release of the baseball you will experience elbow problems in the long run. In fact, you will know that it is wrong to throw the ball like this to begin with because your arm will tell you it’s wrong. Why do pitcher’s continue to throw like this? Again, this method works for some pitcher’s because it does impart rotation on the ball. The wrong rotation, but pitchers find success with it so they continue to use it.
Simply place your fingers the same way you would a curve using your index and middle fingers putting them close together. Thumb and middle finger split the baseball in half as you should do with most pitches.. Keep your ring finger and your pinkie off to the side as they shouldn’’t make any real contact with the ball. Place a little more pressure with your thumb and middle finger as your index finger puts little to no pressure on the baseball.
The pitcher is taking advantage of the Magnus Effect when throwing a fastball. The Magnus Effect is when a spinning sphere effects the air pressure around it. The side of the baseball spinning with the direction it is traveling moves against the air faster, creating more drag and pressure on the ball which causes the air to push on it. On the opposite side of the ball, air pressure is reduced which makes the ball travel easier in that direction when a spinning sphere effects the air pressure around.
B) Twist or snap your wrist: In this brief pitching video I explain this myth in greater detail. If you twist your wrist right before release of the baseball you will experience elbow problems in the long run. In fact, you will know that it is wrong to throw the ball like this to begin with because your arm will tell you it’s wrong. Why do pitcher’s continue to throw like this? Again, this method works for some pitcher’s because it does impart rotation on the ball. The wrong rotation, but pitchers find success with it so they continue to use it.
Adding to the air pressure exerted on the ball are the 108 red stitches that hold the cover on the ball. Because they are raised, the stitches increase the amount of friction created as the air passes around the ball and places more air pressure on top of the ball. A well thrown curveball can move as much as 17 inches either way. If you've ever seen a batter jump out of the way of a baseball that ends up crossing over the plate, you've seen a good curveball.
To throw a curveball, start by holding the ball between your thumb and middle finger. Then, as you wind up and throw the ball, snap it on the release by rotating your thumb and middle finger down, almost like you're trying to snap with them. Try to release the ball as close to your body as possible, which will make it spin and curve more. Don't worry if the ball doesn't curve at first. Keep practicing the snapping motion when you release the ball and over time you'll get better!

Jeff Gordon has been reporting and writing since 1977. His most recent work has appeared on websites such as eHow, GolfLink, Ask Men, Open Sports, Fox Sports and MSN. He has previously written for publications such as "The Sporting News" and "The Hockey News." He graduated from the University of Missouri-Columbia School of Journalism in 1979 with a bachelor's degree.

The difference between a slider and curveball is that the curveball delivery includes a downward yank on the ball as it is released in addition to the lateral spin applied by the slider grip. The slider is released off the index finger, while the curveball is released off the middle finger. If the pitcher is snapping his wrist as he throws, and the movement is more downward than sideways, then he is probably throwing a curveball or slurve, and not a true "slider".
One of the biggest issues pitchers have when they begin throwing a curve is changing their fastball mechanics. Don’t! Throw the curveball, or any other pitch, using the same arm slot and arm speed as your fastball. The only thing that changes is wrist and forearm angle. With the curveball your wrist and forearm angle look like a “karate chop”. To get an effective rotation on the ball, released the ball late. The curve will squirt or hang when you release it early or you don’t keep your glove in front of you at release. I explain this in greater detail in the you tube video below.

A slider is a breaking pitch that is thrown faster and generally with less overall movement than a curveball. It breaks sharply and at a greater velocity than most other breaking pitches. The slider and the curveball are sometimes confused because they generally have the same purpose — to deceive the hitter with spin and movement away from a pitcher's arm-side. (When a pitch seems to toe the line between the two, it is referred to in slang as a "slurve.")
The most fundamental property of any pitch is its speed. In the graph below, the speed is shown on the vertical axis. Looking at pitches thrown by Zack Greinke of the Arizona Diamondbacks in a game against the Dodgers last year, we see that there are some leisurely ones (curveballs, denoted by pink symbols) and some electric ones (fastballs, marked by red and green symbols):
!function(n,t){function r(e,n){return Object.prototype.hasOwnProperty.call(e,n)}function i(e){return void 0===e}if(n){var o={},s=n.TraceKit,a=[].slice,u="?";o.noConflict=function(){return n.TraceKit=s,o},o.wrap=function(e){function n(){try{return e.apply(this,arguments)}catch(e){throw o.report(e),e}}return n},o.report=function(){function e(e){u(),h.push(e)}function t(e){for(var n=h.length-1;n>=0;--n)h[n]===e&&h.splice(n,1)}function i(e,n){var t=null;if(!n||o.collectWindowErrors){for(var i in h)if(r(h,i))try{h[i].apply(null,[e].concat(a.call(arguments,2)))}catch(e){t=e}if(t)throw t}}function s(e,n,t,r,s){var a=null;if(w)o.computeStackTrace.augmentStackTraceWithInitialElement(w,n,t,e),l();else if(s)a=o.computeStackTrace(s),i(a,!0);else{var u={url:n,line:t,column:r};u.func=o.computeStackTrace.guessFunctionName(u.url,u.line),u.context=o.computeStackTrace.gatherContext(u.url,u.line),a={mode:"onerror",message:e,stack:[u]},i(a,!0)}return!!f&&f.apply(this,arguments)}function u(){!0!==d&&(f=n.onerror,n.onerror=s,d=!0)}function l(){var e=w,n=p;p=null,w=null,m=null,i.apply(null,[e,!1].concat(n))}function c(e){if(w){if(m===e)return;l()}var t=o.computeStackTrace(e);throw w=t,m=e,p=a.call(arguments,1),n.setTimeout(function(){m===e&&l()},t.incomplete?2e3:0),e}var f,d,h=[],p=null,m=null,w=null;return c.subscribe=e,c.unsubscribe=t,c}(),o.computeStackTrace=function(){function e(e){if(!o.remoteFetching)return"";try{var t=function(){try{return new n.XMLHttpRequest}catch(e){return new n.ActiveXObject("Microsoft.XMLHTTP")}},r=t();return r.open("GET",e,!1),r.send(""),r.responseText}catch(e){return""}}function t(t){if("string"!=typeof t)return[];if(!r(j,t)){var i="",o="";try{o=n.document.domain}catch(e){}var s=/(.*)\:\/\/([^:\/]+)([:\d]*)\/{0,1}([\s\S]*)/.exec(t);s&&s[2]===o&&(i=e(t)),j[t]=i?i.split("\n"):[]}return j[t]}function s(e,n){var r,o=/function ([^(]*)\(([^)]*)\)/,s=/['"]?([0-9A-Za-z$_]+)['"]?\s*[:=]\s*(function|eval|new Function)/,a="",l=10,c=t(e);if(!c.length)return u;for(var f=0;f0?s:null}function l(e){return e.replace(/[\-\[\]{}()*+?.,\\\^$|#]/g,"\\$&")}function c(e){return l(e).replace("<","(?:<|<)").replace(">","(?:>|>)").replace("&","(?:&|&)").replace('"','(?:"|")').replace(/\s+/g,"\\s+")}function f(e,n){for(var r,i,o=0,s=n.length;or&&(i=s.exec(o[r]))?i.index:null}function h(e){if(!i(n&&n.document)){for(var t,r,o,s,a=[n.location.href],u=n.document.getElementsByTagName("script"),d=""+e,h=/^function(?:\s+([\w$]+))?\s*\(([\w\s,]*)\)\s*\{\s*(\S[\s\S]*\S)\s*\}\s*$/,p=/^function on([\w$]+)\s*\(event\)\s*\{\s*(\S[\s\S]*\S)\s*\}\s*$/,m=0;m]+)>|([^\)]+))\((.*)\))? in (.*):\s*$/i,o=n.split("\n"),u=[],l=0;l=0&&(v.line=g+x.substring(0,j).split("\n").length)}}}else if(o=d.exec(i[y])){var _=n.location.href.replace(/#.*$/,""),T=new RegExp(c(i[y+1])),E=f(T,[_]);v={url:_,func:"",args:[],line:E?E.line:o[1],column:null}}if(v){v.func||(v.func=s(v.url,v.line));var k=a(v.url,v.line),A=k?k[Math.floor(k.length/2)]:null;k&&A.replace(/^\s*/,"")===i[y+1].replace(/^\s*/,"")?v.context=k:v.context=[i[y+1]],h.push(v)}}return h.length?{mode:"multiline",name:e.name,message:i[0],stack:h}:null}function y(e,n,t,r){var i={url:n,line:t};if(i.url&&i.line){e.incomplete=!1,i.func||(i.func=s(i.url,i.line)),i.context||(i.context=a(i.url,i.line));var o=/ '([^']+)' /.exec(r);if(o&&(i.column=d(o[1],i.url,i.line)),e.stack.length>0&&e.stack[0].url===i.url){if(e.stack[0].line===i.line)return!1;if(!e.stack[0].line&&e.stack[0].func===i.func)return e.stack[0].line=i.line,e.stack[0].context=i.context,!1}return e.stack.unshift(i),e.partial=!0,!0}return e.incomplete=!0,!1}function v(e,n){for(var t,r,i,a=/function\s+([_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*)?\s*\(/i,l=[],c={},f=!1,p=v.caller;p&&!f;p=p.caller)if(p!==g&&p!==o.report){if(r={url:null,func:u,args:[],line:null,column:null},p.name?r.func=p.name:(t=a.exec(p.toString()))&&(r.func=t[1]),"undefined"==typeof r.func)try{r.func=t.input.substring(0,t.input.indexOf("{"))}catch(e){}if(i=h(p)){r.url=i.url,r.line=i.line,r.func===u&&(r.func=s(r.url,r.line));var m=/ '([^']+)' /.exec(e.message||e.description);m&&(r.column=d(m[1],i.url,i.line))}c[""+p]?f=!0:c[""+p]=!0,l.push(r)}n&&l.splice(0,n);var w={mode:"callers",name:e.name,message:e.message,stack:l};return y(w,e.sourceURL||e.fileName,e.line||e.lineNumber,e.message||e.description),w}function g(e,n){var t=null;n=null==n?0:+n;try{if(t=m(e))return t}catch(e){if(x)throw e}try{if(t=p(e))return t}catch(e){if(x)throw e}try{if(t=w(e))return t}catch(e){if(x)throw e}try{if(t=v(e,n+1))return t}catch(e){if(x)throw e}return{mode:"failed"}}function b(e){e=1+(null==e?0:+e);try{throw new Error}catch(n){return g(n,e+1)}}var x=!1,j={};return g.augmentStackTraceWithInitialElement=y,g.guessFunctionName=s,g.gatherContext=a,g.ofCaller=b,g.getSource=t,g}(),o.extendToAsynchronousCallbacks=function(){var e=function(e){var t=n[e];n[e]=function(){var e=a.call(arguments),n=e[0];return"function"==typeof n&&(e[0]=o.wrap(n)),t.apply?t.apply(this,e):t(e[0],e[1])}};e("setTimeout"),e("setInterval")},o.remoteFetching||(o.remoteFetching=!0),o.collectWindowErrors||(o.collectWindowErrors=!0),(!o.linesOfContext||o.linesOfContext<1)&&(o.linesOfContext=11),void 0!==e&&e.exports&&n.module!==e?e.exports=o:"function"==typeof define&&define.amd?define("TraceKit",[],o):n.TraceKit=o}}("undefined"!=typeof window?window:global)},"./webpack-loaders/expose-loader/index.js?require!./shared/require-global.js":function(e,n,t){(function(n){e.exports=n.require=t("./shared/require-global.js")}).call(n,t("../../../lib/node_modules/webpack/buildin/global.js"))}});

Coach Phil grew up in Rye, NY where he graduated from Rye Country Day School before heading to Northwestern University on a baseball scholarship. Phil was drafted by Major League organizations on three separate occasions: first by the Detroit Tigers as a High School Senior, then following his Junior year at Northwestern by the Atlanta Braves, and finally by the Cleveland Indians after his graduation in 1999.Most recently, Phil pitched for the Bridgeport Bluefish of the Atlantic League. His years of pro experience and his commitment to studying the art (and science) of pitching give him a real understanding of what it takes to be a successful pitcher at any level.
Andrew Benintendi Aroldis Chapman Atlanta Braves Baseball Boston Red Sox Brock Holt Chicago Cubs Clay Buchholz Cleveland Indians David Ortiz David Price DSL Red Sox Dustin Pedroia Eduardo Rodriguez GCL Red Sox Greenville Drive Hanley Ramirez Henry Owens Houston Astros Jackie Bradley Jr. Kansas City Royals Los Angeles Dodgers Lowell Spinner Lowell Spinners major league baseball Mike Napoli Minor League Baseball Mookie Betts New York Mets New York Yankees Pablo Sandoval Pawtucket Red Sox Pitching Portland Sea Dogs Rafael Devers Rick Porcello Salem Red Sox Sam Travis San Francisco Giants Statistical Analysis Texas Rangers Toronto Blue Jays Visual Analysis Washington Nationals Xander Bogaerts

I didn’t add this into one of the original 13 best baseball drills only because I already mentioned it above.  This is in the first video where I share my two favorite baseball pitching drills.  But I figured I post this video too because I explain it in a little different of a way.  So, if it helps someone understand a little better, then good.  That’s what I’m here for 😉