Grip the ball with your index and middle fingers slightly off-center, toward the outside of the seam
Place your thumb underneath the ball for support
Hold the ball with a firm but relaxed grip
Use a fastball arm slot and arm speed
Release the ball with slight pressure on the inside edge of the ball
Keep your wrist firm at release
Finish your follow-through toward the glove side
Aim for a small glove-side movement rather than a large break
Throw with the same arm action as a four-seam fastball
Practice the grip and release repeatedly for consistent movement