1.1All players are eligible to receive passes (including the quarterback if the ball has been handed off, tossed, pitched or lateraled behind the line of scrimmage).
1.2All players must be behind their side of the Line of Scrimmage neutral zone at the snap of the ball. Violation of this occurs if they have stepped into the neutral zone placing 1 or more of their feet on the ground prior to the snap and is an offside penalty.
1.3Any number of players can be in motion when the ball is snapped; only the center must be at the line of scrimmage. Players in motion towards the line of scrimmage will not be considered offside unless they have entered the 1-yard scrimmage neutral zone by placing 1 or more of their feet on the ground at the snap of the ball. If they return back behind their side of the zone before the ball is snapped, they will not be penalized.
1.4A player who goes out of bounds shall not participate further in that play unless that player went out of bounds as a result of a slippery field, missed flag pull, or contact with an opponent.