American Football NCAA Approved Ruling 3-5-3
I. A33, an incoming substitute, enters the huddle or assumes a position in a formation and (a) after approximately two seconds, A34 leaves the huddle and departs the field of play at his sideline, or (b) after approximately four seconds, A34 leaves the huddle and departs the field of play at his sideline. RULING: (a) Legal. (b) Foul. (Note: A departing player who leaves the huddle or his position within three seconds is considered to have left immediately.)
II. 3/5 @ B-35. Team B has 12 players in the formation, and no Team B player is attempting to leave the field while the ball is ready for play. Team A snaps the ball and the run by A44 gains 3 yards. RULING: Live ball foul, Team A 1/10 @ B-30.
III. Team A has 11 players in its huddle when A27 approaches the huddle (within 10 yards) as it breaks. RULING: Dead-ball foul. Penalty—Five yards from the succeeding spot (Rule 2-27-9-a).
IV. 3/5 @ B-35. Team B has 12 players in the formation, and B44 recognizes that he is the 12th player and is attempting to leave the field. When the ball is snapped, (a) B44 is on the field but his next stride takes him off the field; or (b) B44 touches out of bounds just before the snap. Team A snaps the ball and the run by A44 gains 3 yards. RULING: (a) Live ball foul by B44. Team A 1/10 @ B-30. (b) No foul by B44, 4/2 @ B-32. To not be counted as the 12th player, B44 must be off of the field of play.
V. Team A is in formation to kick a field goal and Team B has 11 players in its formation. Just before the ball is snapped a 12th Team B player runs onto the field. The ball is snapped and the kicker completes his kick. RULING: Live-ball foul. Five-yard penalty, previous spot, or Team A may accept the result of the play.
VI. Team A lines up for a two-point try attempt at the B-3. Team B has eleven players in its defensive formation. The 12th Team B player runs onto the field just before or just as the ball is snapped. A22 takes the handoff from the quarterback and (a) is tackled at the one-yard line; or (b) carries the ball into the end zone. RULING: Live-ball foul against Team B for illegal substitution. (a) Penalize Team B half the distance to the goal and repeat the try at the B-1.5. (b) Team A will decline the penalty on the successful try.
VII. 3/5 @ B-35. Team B has 12 players in the formation, and no Team B player is attempting to leave the field. The ball is ready for play, both teams are in formation and the snap is imminent. Quarterback A12, late in the play clock, is struggling to read the defense and (a) calls timeout; or (b) the play clock expires. RULING: When the deep officials count 12 Team B players, both teams are in formation, no Team B player is attempting to leave the field and the snap is imminent, (a) the crew will offer Team A their time out back and penalize Team B for a substitution foul. Team A 1/10 @ B-30 (b) no foul for delay of game, penalize Team B for a substitution foul. Team A 1/10 @ B-30.