Gyroball

Rob Neyer: "The second 'spin' -- and this is what’s revolutionary, perhaps -- is the motion of the upper arm. This differentiates from Mike Marshall’s Newtonian model and demands a forceful yet controlled rotation of the humerus. To get the idea of this in your head, hold your arm out so that your upper arm (humerus) is parallel to the floor. Have your forearm at a ninety-degree angle and hold the ball so that the ball is between your hand and your ear. The proper second 'spin' is done by rotating the upper arm so that the forearm goes from pointing up to pointing down and the hand goes from pointing in at the body to pointing away from the body (pronation) just after the release of the ball.
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