How to Throw a good curveball
Kyle Hutchens with Live Strong demonstrates how to throw a good curveball. First grip the baseball on the side where the skinny seams come together. Take a normal pitching stance with one leg back, come through, bend your front leg and snap your wrist down through the ball to release it. Snapping your wrist down through the baseball creates the speed and the drop of the curveball. It creates less velocity than a fastball. Create the drop when your arm is between the 12 o'clock and 6 o'clock positions. Throwing a curveball using this technique will create more misses from the batters.