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.
Grip the ball between your thumb, forefinger, and middle finger. This is the classic curveball grip. Grip the ball with the bottom seam between your index and middle fingers, and place 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 front and one on bottom rear of the ball.[8]
Always consult your physician or health care provider before beginning any exercise or training program. Use of the programs, exercises, advice and information contained in this website is at the sole choice and risk of the reader and no liability is assumed by Pro Baseball Insider. Viewing and use of this website is considered agreement to PBI's Terms and Conditions of Service. Click to view Privacy Policy.
Pitchers and catchers stand at regulation distance from each other. The catcher stands behind home plate, and a batter stands in the batter's box. The batter should alternate between a left-and right-handed batting stance after five pitches, but not take any swings. The catcher calls balls and strikes. Have the batter wear a helmet in this practice session.
Both partners will begin in a standing position, facing forward so athletes are side to side, each with one end of the KB Powerbands. The athlete performing the shoulder prevention exercises will put their hand or a towel high in their armpit, bring their elbow to their side, and make a 90 degree angle at the elbow. Holding the KB Powerbands athletes will maintain this position with their arm and begin to rotate just the bottom portion of their arm (forearm and hand) away from their body. It is important athletes do not let their elbow move away from their body. Keeping the elbow tight will allow athletes to experience the full benefits of the pitching drill. Athletes will move the hand away from their body at a normal speed while taking 4-5 seconds to control the resistance as the hand moves back toward the body.

The key with the slider is to hold the ball slightly off-center (on the outer third of the baseball). Remember to slightly cock your wrist, but don't stiffen it. That way, you can still get good wrist-snap upon release. If your wrist is slightly cocked to the throwing hand's thumb side, your wrist-snap will enable you to have the pitch come off of the thumb-side of your index finger, which, in turn, promotes good spin on the ball.
In the world of sports power is defined as the combination of speed and strength. Adding more strength to an athlete will help increase an athletes ability to produce power. However, the greatest gains in power are made when both speed and strength are improved. For example, one athlete may be able to throw a baseball a certain distance, but the ball does not travel at a high speed. Whereas another athlete may be able to throw a baseball very fast, but the ball does not travel a great distance.
“Dick’s Scientific Formula For Big League Pitching Mechanics Package has given me the knowledge I need as a pitching coach to help young people succeed. I highly recommend it to any pitcher Little League through college. From mechanics to conditioning to the mental aspect, everything he does is top notch. His program helped our pitchers go 29-1, have a 0.80 ERA last season, and win a State Championship.”
No two pitchers ever throw exactly the same, but their deliveries share three components: balance, timing and power. (See how to work on some of these: The Keys to Improving Pitching Speed and Power.) Every good pitching drill must address at least two of these components. It also must be tailored to your individual style. For example, say you specialize in sidearm pitching. A drill that teaches throwing downhill and forward trunk tilt would be a waste of your time.

For example, physical forces and properties, such as gravity, friction, velocity, acceleration, and momentum, are constantly at work when a ball is thrown and subsequently hit by a bat. When it comes to a curveball, though, the spin put on the ball by the pitcher brings a couple of other scientific principles into play: Bernoulli's principle and the Magnus Effect.

A 12-6 curve ball will break downward more sharply. Place your index and middle fingers between the seams, and your thumb on the bottom of the ball. Do an abbreviated snap as you throw, or release the ball as your hand passes your head instead of following the arm motion all the way through. To account for the sharp break, throw a 12-6 a bit higher than you would a normal curve ball.
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The slider breaks down about six inches and in by six inches to an opposite hand hitter. A left-handed pitcher’s slider breaks down and away from left-handed batters; down and in on right-handed batters. It appears to be a fastball but breaks at the last minute going about six to eight miles an hour slower than the fastball. It is one of the fastest pitches in baseball.

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Always consult your physician or health care provider before beginning any exercise or training program. Use of the programs, exercises, advice and information contained in this website is at the sole choice and risk of the reader and no liability is assumed by Pro Baseball Insider. Viewing and use of this website is considered agreement to PBI's Terms and Conditions of Service. Click to view Privacy Policy.
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.
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.
Mostly the speed and amount of break. A curveball is thrown more slowly than a slider, and the amount of curve on its trajectory is more even. From the batter’s perspective it looks like the pitch is falling off a table. On the other hand, a slider is thrown almost as hard as a fastball. Its trajectory is much sharper than a curveball’s, its break becomes noticeable about 2/3 of the way towards the plate. To a batter it looks like a fastball, then suddenly breaks sharply.

[circle_list] [list_item]The drill should address and benefit at least two of these components (Balance and Timing, Timing and Power, Balance and Power, or all three).[/list_item] [list_item]The drill must not negatively impact any one of these components (for example, if a drill teaches balance, but hurts timing and power by having the pitcher pause and lose momentum, then it is counterproductive).[/list_item] [/circle_list]

A right-handed pitcher snaps his wrists in clockwise rotation when delivering a curveball (he grips the ball with his middle finger near the top of the ball and his thumb on the bottom---but releases the pitch with his thumb near the top).  A pitcher throws a slider with smaller wrist-break.  He imparts spin by gripping the ball "off-center" (that is, he grips the ball with his middle finger at "2 o'clock"-- instead of 12 o'clock)
In this video I answer some questions about the King of the Hill Pitcher’s Trainer, one of which was “what type of pitching drills can you do on the King of the Hill?”.  If you like the King of the Hill, and I definitely suggest this product for pitchers of all ages, then you can check it out at King of the Hill.  I really love this product because it teaches pitchers how to properly and efficiently get the most energy out of their legs.