Position in American football
InAmerican football, aback is a player who plays away from theline of scrimmage (as opposed to alineman). Historically, the term "back" was used to describe multiple positions on offense and defense, although more descriptive and specific position naming is now common. Thus, "back" can refer to positions including:[1]
- Fullback, one of the two rushing positions, along with the halfback
- Halfback, one of the two rushing positions, along with the fullback
- Tailback, a halfback who is lined up deep in the backfield, as in the I formation
- H-back, an offensive position that lines up similarly to a tight end, but is set back from the line of scrimmage
- Quarterback, a member of the offensive team that lines up directly behind the offensive line and receives the snap of the ball at the beginning of a play
- Running back, a member of the offensive backfield whose primary role is to receive handoffs from the quarterback to run with the ball
- Singleback, an offensive formation that only requires one running back
- Slotback, a wide receiver on the offensive team that is positioned in the "slot" (located between the last offensive lineman/tight end and the next wide receiver)
- Upback, a blocker who lines up behind the line of scrimmage in punting situations
- Wingback, a position in the single wing formation, usually a running back
- Defensive back, a member of the defensive team who take positions somewhat back from the line of scrimmage
- Cornerback, a member of the defensive team that primarily defends wide receivers
- Dimeback, a cornerback or safety who serves as the sixth defensive back
- Nickelback, a cornerback or safety who serves as the additional defensive back in a nickel defense
- Linebacker, a member of the defensive team that is positioned approximately three to five yards behind the line of scrimmage

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