American Football NCAA Approved Ruling 7-1-2
I. After a huddle or shift, all Team A players come to a stop and remain stationary for one second. Then, before the snap, two or more simultaneously change their positions. RULING: All 11 Team A players must again stop for one second before the snap, otherwise it is a live-ball foul at the snap for an illegal shift. Penalty—Five yards from the previous spot (Rule 2-22-1).
II. Ten Team A players shift while A1 remains stationary. A1 then starts moving backward before one second elapses and the ball is snapped. RULING: If A1, who moved, did not halt with the other Team A players for one second before the snap, it is a dead-ball foul at the snap for a false start. Penalty—Five yards from the succeeding spot.
III. After the Team A players have stopped for one second, end A88 runs wide and stops, and before one second elapses, back A36 starts moving backward. RULING: Legal. But if back A36 starts before end A88 stops, the simultaneous movement of two players constitutes a shift, and all Team A players must be stationary for one second before the snap (Rule 2-22-1).
IV. Team A is in a no-huddle offense and is moving to the line when the ball is made ready for play. Although some players settle into their positions and stop, at least one player never stops and is still moving when the ball is snapped. RULING: Dead-ball foul: Illegal shift that converts to a false start. Team A never satisfied the one-second rule before the snap. Officials should shut the play down and penalize Team A five yards.
V. Team A has 3rd and 3 at the B-40. QB A12 is in shotgun formation, (a) makes a fake clap standing in position; (b) makes a fake clap while chucking his shoulders and hands forward in an exaggerated motion simulating the start of the play. RULING: Rule 7-1-2-b-4-c states that it is a false start if the quarterback makes any quick, jerky movement that simulates the start of the play. In (a) no foul; (b) false start on A12.