The single back formation is a football offensive setup that features one running back positioned behind the quarterback. This formation allows for a balanced attack, as it can effectively support both running and passing plays. The absence of additional running backs creates more space for receivers to run routes and for the quarterback to make decisions. In this formation, the offensive line typically consists of five players, while the tight end may be included to provide extra blocking or serve as a receiver. The single back formation is versatile, enabling teams to adapt their strategy based on the defense's alignment and tendencies.