This drill helps the pitcher and the catcher visualize rotation the pitcher has put onto the ball.
Draw a stripe right down the middle of the ball.
When throwing a rise ball or a peel drop (straight drop ball) the pitcher and catcher should see a solid line as the ball flies toward the target, indicating correct rotation.
If the line wavers or cannot be seen, the rotation is incorrect and more rotational work is needed.
The straight drop (peel drop) is released off the middle finger and the rotation is clockwise as viewed from third base. If any other rotation is imparted to the ball, the ball will not drop.
The rise ball is just the opposite from the peel drop. The ball must have a counter clockwise rotation as viewed from third base.
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