The I-formation positions the tailback 6 to 8 yards behind the line of scrimmage with the quarterback under center and a fullback splitting them in a three-point stance. It is most frequently utilized in short-yardage rushing situations. The quarterback in this offensive configuration is snapped off 5-8 yards behind the center. The quarterback takes the snap 5-8 yards behind the center in this offensive alignment. Shotgun The single set back configuration, also referred to as the "ace" or "single back," features one running back positioned roughly five yards behind the quarterback. The quarterback will be lined up 5 to 7 yards behind the center in a shotgun configuration.
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