[Forksref]

Originally posted by ABoselli
NFHS - If the foul occurred before A23 crossed the goal line, why do not we have an all but one enforcement? The ball was not dead, it was a personal foul (whatever the action was, it was a contact foul), so by rule, we should go back 15 from the spot of the foul (a foul by the offense behind the basic spot) and replay the down.

If it were after he crossed the goal line, the ball is indeed dead, and we would assess on the try.

"All but one" is a foul on the OFFENSE behind the basic spot, either end of run (run play) or previous spot (loose ball play).