Rules related to the football line of scrimmage include ^{1 2 3 4}:

• The line of scrimmage is established where the previous play ended or after penalty yards have been assessed.
• Both offensive and defensive lines must remain on their respective sides of the line of scrimmage until the ball is snapped.
• The offense must have seven players aligned at the line of scrimmage, including two eligible receivers.
• Only the offensive player who snaps the ball is allowed to have any part of his body in the neutral zone.