A nose tackle aligned nose-to-nose with a center.
The defensive lineman is line up in the middle of the A gap.
Defensive lineman is nose-to-nose with the offensive guard.
Defensive lineman is line up in the middle of the B gap or outside shade of the guard. He is responsible for maintaining outside leverage and not letting himself get hook or reached blocked by the offense.
Three down lineman and four linebackers.
Defensive lineman is line up nose-to-nose with the offensive tackle.
The defensive lineman had his nose on the outside shoulder of the offensive tackle.
Defensive lineman is nose-to-nose with the offensive tight end.
Defensive lineman had his nose on the inside shoulder of the offensive tight end.
Defensive lineman was aligned on air outside the outside shoulder of the offensive tight end.
Defensive lineman has his nose on the outside shoulder of the offensive tight end.
A play called by the quarterback at the line of scrimmage to change the play that was called in the huddle.
The official who sets up 20 yards deep in the defensive backfield on the wide receiver side of the field. His duties include:
• Make sure the defensive team has no more than 11 players on the field
• Watch all eligible receivers on his side of the field
• Watch the area between the umpire and field judge
• Rule on the legality of catches and pass interference penalties
• Watch for clipping on kick returns
• On field goals, stand under the goalpost and rule on whether the kick is good
A formation that consists of an equal number of linemen on either side of the center.
On offensive line consisting of a center with one guard and one tackle lined up on each side of him is considered a balanced line.
The side opposite the direction a player is facing.
When a right-handed quarterback sets up for a pass, the left tackle is responsible for protecting his blind side.