To throw a breaking ball, begin with your index and middle fingers against the outside seam (the right seam if you are right-handed). Rotate your thumb upward and your middle and index fingers downward as you release the ball, yielding a straight curve that drops down through the strike zone.Continue Reading
Place your index and middle fingers together, along the outside seam of the baseball. Line up your thumb with the closest seam to it, sliding the thumb just past the seam. Rest the ball against the pad where your fingers meet your hand rather than taking it deeper into the palm.
Begin your normal pitching motion, and spin the middle and index fingers downward as you release the ball. Push them down so that they appear perpendicular to you, pulling the ball down. Push your thumb up at the same time to maximize the break on the pitch.
Avoid the long deceleration arc that comes with a fastball; snap the pitch off, and leave your throwing elbow at the opposite hip. Use this shorter arm motion to give the pitch a real snap at the end, maximizing the amount of break on the pitch.