a formation similar to the flexbone, though much older, is known as the "delaware wing-t" was created by longtime university of delaware coach and ncaa rules committee chairman david m. nelson, and perfected by his successor tubby raymond. it has become a very popular offense with high schools and small colleges. it was designed at the time to be a mix between the single wing and t-formation. it took the motion and run-strength of the single wing, and the qb-under-center from the t. in this variation, there is only one wing back, with the other back lined up next to the fullback on the opposite side from the wing back. however, the wing back may also line up diagonally from the tight end. he may be used as an extra blocker or a receiver. he may come in motion for running plays.