[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]
Why does a curveball curve? How does a pitcher throw a changeup with the same arm speed as a fastball? Baseball is filled with buzzwords that are often used imprecisely. In this series of articles, Mike Richmond explores the baseball’s motion as it travels through the air: How does it behave, and what can a pitcher do to control it? This article looks at the slider to see what causes its very distinctive break.
A slider is the third fastest pitch in baseball. (The No. 1 fastest is a four-seam fastball and No. 2 is a two-seam fastball.) It's important for pitchers, parents and coaches to learn a proper slider grip and to learn correct throwing technique of a slider to ensure and promote arm-health. A slider is gripped like a two-seam fastball, but held slightly off-center.
Now, the "markings" he will have on the mound should create an imaginary letter "H" if one looks from the side. The pitcher then goes through his entire delivery (with or with out throwing the baseball at the end of the motion) and looks to see where his front foot lands in relation to the two lines he has etched out in the dirt. He can use either his full or set wind-up in this drill. Did the pitcher land the length of his height? Did the pitcher stride in a straight line toward his target? If not, a pitcher should perform this drill 50-times a day without throwing the baseball.
The main goal of Slider Domination is to simplify the learning process of pitching.  The extremely analytical world of baseball nowadays is not so much for the players. Never forget that.  It is for the decision makers at the top of the pyramid. Players at all levels will still have the natural pressures that come with performing.  Buying into the analytics just makes everything more difficult.   Please allow this simple breakdown of how to throw a Slider in just 3 simple steps to quickly advance your progress.  In conclusion, your obligations lie with mastering the Slider and elevating your pitching status.

With my fastball, I'm trying to keep my two fingers behind the ball as long as I can to pull down on it and create as much backspin as possible. With the curve, instead of trying to stay behind, it's almost the opposite. At the very end of the release, you try to get your hand in front of the ball to create that topspin, which makes it break. You're rolling your hand forward and down off the side of the ball as you snap your wrist.

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".

7. Parallel Feet Drill - Works on upper body mechanics. This drill isolates the upper body. The pitchers face each other chest to chest with the feet at shoulder width. The lower body remains stationary. The ball is held in the glove in the "check-your-pulse" position. The torso twists at a 90 degree angle as the ball is pulled down out of the glove, and in a sweeping arc brought to the power position with the hand always on top, and the elbow at least at shoulder level. The delivery is then made and the proper follow through is checked. The glove elbow finishes pointed toward the sky. The drill emphasizes that the pitcher throws with a "proud chest" that remains closed as long as possible.
Armando Galarraga threw sliders 38.9% of the time in 2008, more than any other starting pitcher in the majors, and Ryan Dempster threw them 32.9% of the time, more than any other NL starting pitcher.[2] In 2008 CC Sabathia had the most effective slider, among major league starting pitchers.[3] Zack Greinke won the AL Cy Young award in 2009 in large part because of his slider, one of the better pitches in all of baseball.[4] In 2011, Clayton Kershaw won the Triple Crown by allowing only a .117 average against his slider.[5]
In this video I share with you how to make a tool that you can use to work on your curve.  What you do is screw two baseballs together.  For the pitching drill you want to throw the balls in a way that they rotate tightly end over end on the axis in which you are trying to get your break.  This tool and pitching drill can dramatically improve your curveball.