Essential to a well-rounded conditioning program, is the Dynamax medicine ball. Shown here is a basic rotational drill. The catcher initiates the action with a toss of the medicine ball to the thrower. The thrower returns it by rotating from core to extremity, feeling the hips, midline, shoulders, and arms rotate, and then releasing the ball, aiming at the catcher’s chest. We use a light ball (four-pound Stinger) and focus on execution of each repetition.