If the quarterback drops or loses the football while he is bringing the ball forward in a passing motion, and the ball touches the ground, it is considered an incomplete pass. If the quarterback drops or loses the football at any other time, it is considered a fumble, as if any other player had dropped it.
我觉得AR是手臂后撤时候球被打掉的,还没做出向前传球的动作,所以算fumble。
做出传球动作,又把手收回来时的掉球,被认为是在向前传球时造成的,因此是incomplete pass,而不是fumble。这个赛季前被废除了。
When [an offensive] player is holding the ball to pass it forward, any intentional forward movement of his arm starts a forward pass, even if the player loses possession of the ball as he is attempting to tuck it back toward his body. Also, if the player has tucked the ball into his body and then loses possession, it is a fumble.