 FAKE: When Roys rubber hand has been removed and the hook is  visible, his right arm/sleeve is suddenly longer than his left (in  fact, its just longer enough to accommodate the hook that Harrelson  is holding in his hand at the time). This is most obvious at the  beginning of the tournament scene, when Roys hand falls off with  the ball. His right arm is suddenly a several inches longer than his  left, not counting the hook, but when he puts the hand back on his  arms are the same length again.