9-4-4 Defensive players must make a definite effort to avoid charging into a passer, who has thrown the ball from in or behind the neutral zone, after it is clear the ball has been thrown. No defensive player shall commit any illegal personal contact foul listed in 9-4-3 against the passer. Grasping and twisting of the facemask as seen in PlayPic is considered roughing the passer.
9-4-4 If there is a change of possession (MechaniGram A), the play results in a touchback (MechaniGram B) or the ball becomes dead behind the previous spot, the penalty is enforced from the previous spot.
9-4-4 When the passer is roughed and there is no change of possession and the play does not result in a touchback, the penalty is enforced from the dead ball spot provided that the spot is beyond the previous spot. In MechaniGram A, that is A's 39-yard line; in MechaniGram B, it is A's 28-yard line.
9-4-4, 10-5-5 Penalties for roughing the passer are enforced from the dead-ball spot. But not if a change of possession occurs during the down. In the MechaniGram, A1 is roughed as A2 catches the pass. But A2 fumbles and prone B3 recovers. As a result, the 15-yard penalty is enforced from the previous spot and team A is awarded a new series. The enforcement would be the same if the pass was incomplete or if the last run ended behind the line of scrimmage.