100 Formation
In the wing t formation, one of the base formations is called 100. The 100 formation refers to the alignment of having a split end on the left side of the formation, a half-back 4 yards behind the left tackle, a fullback 4 yards behind the quarterback, a tight end on the right side of the line of scrimmage, a wing back located just wider than the tight end and off the line of scrimmage.