A snap infraction is a dead ball penalty in which the snapper (center) fails to legally snap the ball prior to a scrimmage play. It is not the same as a traditional false start penalty because the snapper is the only player that can put the ball in play. Any other player on the offense can flinch or leave early prior to the snap because of a lack of communication or concentration. The snapper either snaps the ball or does not. Anything in between is a snap infraction.
Refer to the What Is A Snap Infraction? article for more detail.
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