American Football NCAA Approved Ruling 9-1-15
I. As ball carrier A20 races down field near the sideline, defender B56 grabs him from behind by the back of the jersey at the collar or by the collar of his shoulder pad. B56 continues with this contact for several yards but A20 does not go to the ground until tackled by another defender. RULING: Legal play. B56 did not foul because he did not abruptly pull A20 down.