Bump and run?

[Bob M.]

Blocking, as defined in both Federation and NCAA rules apply to players of both the offense and defense. As long as the defender(s) uses a legal blocking technique (NF 2-3, NCAA 9-3), such a block is legal provided it's not pass interference or a personal foul. There is no requirement that the offense must initiate a block. The defense may initiate a block if he desires. The restriction about the receiver no longer being in a position to block the defender applies to a situation where the defender uses his hands in a manner not consistent with the requirements of NF 2-3. For example, he can't push the receiver in the back, nor can he pull him out of the way unless he's attempting to ward off the receiver's block or get to a loose ball. Once the receiver is even with the defender or past him and is no longer in a position to block the defender, this type of contact would constitute illegal use of the hands, or an illegal block in the back. But as long as the defender can use a legal blocking technique (inside the frame of the body from the front below the shoulders), that contact is legal whether initiated by the the receiver or the defender. And a double team block by the defense is perfectly legal. If not, you wouldn't see the defense double teaming wide receivers on punt plays to keep them from effectively covering the kick.