However, many would label the tailback above as quarterback, even though the position is clearly the deepest back! Until 1960, the formation above would have been called a double wing, and the tailback labeled a fullback, there being no need for the tailback designation when the backs assume so few intermediate depths. However, the deep back position above is usually occupied by a player who habitually plays QB, so the habitual position name tends to stick, as with the "extra tight end".