My Scientific Formula For Big League Pitching Mechanics Package is the only complete “pitching clinic” home study course available that is backed by real sports science research. It’s designed for parents, coaches, and players of all ages. Whether you’re a pitcher just starting out, or an advanced pitcher looking for answers, we make it simple to understand for both the parent and pitcher.
Let's begin. A pitcher will stand perpendicular to a straight line (like a foul line in the outfield grass or line on a gym floor). If the pitcher is on the pitching mound itself, he can use his spikes to drag out a straight line in the dirt 8-feet long and perpendicular to the rubber (i.e. directly in line with home plate). Then, he simply marks out the distance of his height and drags out a second line in the dirt--only this one is parallel to the pitcher's rubber. If the pitcher is not on a mound, he will simply place a second object like his hat on the ground. This will mark the distance he should be striding toward his target.
Your wrist and forearm position with the slider at release is only slightly different than the curve. With your curveball grip your palm is facing you as you bring the ball out of your glove.: Throwing a slider is similar other than your palm facing you, it is slightly turned in. Using your fastball pitching mechanics with identical arm speed and arm slot, release the baseball in front of you.
A successful major league batter gets a hit only 30 percent of the time he comes to bat. One of the ways pitchers lower these chances even further is by throwing a curveball. A curveball is a pitch that appears to be moving straight toward home plate but that is actually moving down and to the right or left by several inches. Obviously, a pitch that curves is going to be harder to hit than a fastball that is moving straight.
It is the direction of the spin axis that determines the break of the ball. A perfectly horizontal axis – corresponding to perfect backspin – would yield a fastball with perfect vertical rise. However, most pitchers tilt the axis slightly. For right-handed pitchers, the fastball breaks upward and toward third base. The opposite is true for left-handed pitchers: Their fastballs move up and toward first base.
[circle_list] [h5]Here are the big problems with most drills that teach “good arm action”[/h5] [list_item]Teaching the “L” – this works completely against developing fluid, efficient arm action. The “L” is a point in time. All pitchers should get to this position just before arm acceleration (or what I like to refer to as catapult & extend). But it’s just that – a point – and you pass right through it.[/list_item] [list_item]Starting from the “Power Position” or the “Power-T” (or whatever they’re calling it these days) does not teach good arm action. The act of throwing involves creating momentum and transferring that momentum out into the ball. When you start from a pre-set position, with your arm essentially where it would be mid-throw, you kill momentum and disrupt timing.[/list_item] [list_item]They teach “Thumbs to Your Thigh, Fingers to the Sky” … Catchy, but an awful teach. This is just not what good big league pitchers do, and is not the way to develop a fluid, efficient arm path. The problem is it teaches getting the arm up as the main objective, when really the focus should be on whipping the arm through and getting to a good fully extended release point.[/list_item] [/circle_list] [h5]So Say No to All Drills??[/h5]
To throw start with your dominant hand facing away from the catcher facing sideways.  Bring up your front leg.  When you do this at the same time bring up your throwing arm with the ball facing away from the catcher 90 degrees to your shoulder like an L shape.  Then bring your arm down to your knee and release at the time necessary.  It should look something like the video.  He doesn't bring his arm and leg up at the same time but everyone's throw is a little different.
Snap the release. Keep your palm facing inward to your body, and release the ball as you step forward with the opposite foot. The ball should be out of your hand shortly after it passes your head. As your arm comes down from the throw, snap it toward the opposite hip. Twist your thumb upward and your middle finger downward to put a spin on the ball.[16]
5. Release: Releasing a curveball is much different than releasing a fastball. A fastball release is straight out in front of your body. In effect, the way you release the ball is the type of action you want the pitch to have. When releasing a curveball, your wrist will be hooked and your hand will pull down in front of your body. It is important that you release the ball close to your body (Short Arm). The further you release from your body, the less resistance your middle finger will have on the seam and therefore your rotation will be looser. Loose rotation curveballs tend to spin or hang.
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.

Place your thumb. Place your thumb under the opposite inside seam of the ball. The further your thumb is from your other 2 fingers, the more the pitch will drop. The closer your thumb is to your other two fingers, the more it will slide. If your index and middle fingers are at a 10 or 11 o'clock position, your thumb should be at a 4 or 5 o'clock position.
A Hall of Fame pitcher famous for his slider was lefty Steve Carlton. Right-handed pitcher David Cone was famous for his slider, which he was able to use many different ways, as was Bob Gibson of the Cardinals. To right-handed batters, Cone would throw it to hook sharply outside the strike zone, getting hitters to chase and miss it. He threw the pitch from various arm angles to further confuse the hitter. Cone's slider was also a strikeout pitch to left-handed hitters, throwing it to curve back over the outside corner and catch the hitter looking. Cone used the slider effectively during his perfect game on July 18, 1999—the final out was recorded via a slider resembling a wiffle ball. In the first game of the 1988 World Series, Dennis Eckersley tried to strike out Kirk Gibson with a backdoor slider, but Gibson was sitting on that exact pitch and hit a game-winning home run. Joe Carter ended the 1993 World Series with a home run on a slider thrown by Mitch Williams. A remarkable slider was John Smoltz's, which would come in looking like a strike and then break out of the strike zone. Brad Lidge featured a slider in his perfect season as a closer in 2008, and used the pitch to strike out the final batter of the 2008 World Series for the Philadelphia Phillies. Closer Francisco Cordero also throws a slider.[citation needed] Other top pitchers to throw a slider included Hall of Famer Rollie Fingers, who used the pitch to win a Cy Young Award in 1981,[1]and Seattle Mariners and Arizona Diamondbacks starter Randy Johnson, whose slider's lateral movement eventually spawned its own nickname, "Mr. Snappy". At times, Johnson's slider was faster than most pitchers' fastballs. Mike Jackson, who tied Paul Assenmacher with the most games pitched in the 1990s (644), also threw a slider. Ron Guidry threw a slider, which he was taught by Sparky Lyle.
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.
It's always best to learn proper pitching mechanics early -- and then continue to refine those mechanics as a player gets older and advanced in the game of baseball. This starts in little league. These little league pitching drills can be used as a teaching and training tool to promote and develop proper pitching mechanics. Each little league pitching drill focuses on a specific aspect of the pitching delivery, allowing the pitcher to develop a feel for good mechanics that directly translates into better consistency in games, more strikes and increased pitching velocity.
If you’re interested in some more in-depth curveball training, I have a comprehensive program where I teach you how to master throwing a curveball.  I’ve essentially put together a complete system for learning the right way to throw a true big league curveball.  In this program, I’ll teach you the grip, delivery, drills, and how to integrate a curveball into your game.  You’ll get access to a powerful step-by-step process for developing your curveball and learn exactly how to use your new curveball to dominate on the mound.
Choose a grip (start with the standard finger on top of the ball variation) and see how it feels, and get some feedback from a qualified partner on how it looks. Then, tinker. Try others, and see which grip works best for you. Remember: NO grip is best, and any can produce an amazing curveball – it just depends on the person and his level of comfort with it, and his unique way of throwing.
For the second phase of this shoulder prevention pitching drill one athlete will continue facing forward while the opposite athlete turns to face their partner. Athlete facing their partner will be performing the should prevention portion of this phase of the pitching drill while partner the facing forward will be focused on strengthening their core.
Throw this pitch with the same arm speed and body mechanics as a fastball, only slightly turn the ball over by throwing the circle to the target. This is called pronating your hand. (Think about this as giving someone standing directly in front of you a "thumbs down" sign with your throwing hand.) This reduces speed and gives you that nice, fading movement to your throwing-arm side of the plate.
This is also important for throwing a fastball and other pitches as well.  What do I mean when I say stay behind the ball?   It means don’t be under the ball, too much to the side of it, or overdoing it with your wrist or elbow. Regardless of your arm slot, you will properly get to this point in your delivery by doing everything correctly with your mechanics from the ground up.  From the time your feet first move to deliver the pitch.  
I just did a search for “baseball pitching drills” and Google came back with 1,080,000 results. I share this to illustrate a point: there’s a lot of garbage out there on the internet. You can waste a lot of time trying to weed through it all. Even worse, if you go with some of the more popular drills, you’ll probably waste even more time performing them! Because the sad reality is that most pitching drills are, at best, great time-wasters and, at worst, totally counterproductive.
6. Arm speed: It is extremely important that you maintain similar arm speed with your curveball that you have with your fastball. A hitter reads arm speed. The matter of arm speed is obviously more important with a changeup than it is with a curveball, but it’s important for other reasons. Another way to get a tight rotation and hard downward movement with a curveball is to throw it with quicker arm speed. If two pitchers have the exact same curveball grip, mechanics, release, etc. but one throws it with quicker arm speed, the one with quicker arm speed will throw the curveball with more break, and thus the harder pitch to hit.
Practice pitching standing up once you get more comfortable with the throw. After practicing on your knees and getting the hang of throwing a curveball, it's a good idea to try pitching while standing up so you can practice throwing with a fuller motion. This is a more realistic representation of how you will actually be pitching when you play.[11]

Grip the ball. The knuckle curveball is similar to other grips, but the variable this time will be your index finger. Grip the ball with your middle finger along the bottom seam, and your thumb along the back seam. Hold the baseball such that the curves of the seams are close to your palm, with one on top and one on the bottom of your palm. Bend your index finger inward before laying it on the ball so that your nail and top knuckle are resting on the ball and your middle knuckle is pointing at the target.

For a right-handed pitcher, a curveball spins clockwise as it heads toward home plate, pushing through the air, and slowing by the force of friction caused by the resistance of the air. Because of the ball's spin, air will pass more quickly on one side than the other. In other words, the air will move with the spin of the ball on one side and against the spin of the ball on the other side.
Strictly speaking, a curveball breaks more in the vertical plane than horizontally. Curveball masters can throw a “12–6” (think clock), purely vertical and do it anywhere from 70–90mph. More commonly, the ball drifts from 1–7ish, 2–8ish. If a ball breaks more laterally (horizontally), ie. 3–8, then it’s a slider, but thrown faster than a curve (80mph territory). If it just breaks laterally at more or less fastball speed (80–90), then it’s a cutter.
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