re: Don't understand the NFL rules

quote:

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I don't understand how a reciever has to hold possesion to the groud in the endzone for a touchdown, but all a runner has to do is make the tip of the ball cross the line then can fumble.

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If the receiver has already completed the reception, he does not have to hold it past the plane. However - whether or not a reception is judged completed depends on if it comes out before the receiver either makes a move or is downed.