In American football, this term refers to a defensive player who lines up on the outside of the offensive line, typically a defensive end or outside linebacker. Their primary role involves rushing the passer, setting the boundary against running plays, and disrupting offensive schemes. An example of a player excelling in this role would be one consistently pressuring the quarterback and forcing errant throws, or effectively containing running backs attempting to gain yards around the end of the line.
The importance of this position stems from its direct impact on both the passing and running games of the opposing offense. A proficient player in this role can significantly reduce the time a quarterback has to throw, leading to sacks, hurried throws, and turnovers. Furthermore, they are crucial in preventing opposing teams from gaining advantageous yardage on outside runs. Historically, teams with strong players in this position have demonstrated a greater capacity to control the line of scrimmage and dictate the flow of the game.