Colleges tend to have less powerful passing games than professional football, and the use of three man backfields or an overshifted secondary is common practice. In the overshift, one of the safeties plays a monster or rover role, often moving to the strong side of the offensive formation to about linebacker depth. As a consequence, a body of defenses has emerged that have 5 man lines, 2 linebackers and a monster or rover back. This rover is a hybrid player, expected to use a linebacker technique when runs are encountered, and act like a pass defender otherwise. According to
Homer Smith, former head coach of the Army football team, the origin of the overshift, which he called the inverted rotation, is obscure. He first observed it in 1958. However, as widely spread flankers would break the run contain methods of the day (e.g. the "four spoke" contain of the 5–2 Oklahoma), the inverted secondary became popular as a way to stop the rushing attack of formations like
Earl Blaik's Lonely End.
5–2 Monster The kinds of defenses seen of this kind are varied. The best known is the 5–2 Monster, combining the
5–2 Oklahoma with the overshifted monster secondary. This defense is often credited with stopping the
option rushing attacks that began developing in the 1940s.
Desert Swarm and related defenses A more modern variant are a series of defenses with 5 man lines, stemming from defenses
Rich Ellerson was exposed to while coaching Canadian football. Adapted to 11 man American football, this defensive system first gained prominence with the
Arizona teams of
Dick Tomey, whose defense became known as the Desert Swarm defense. The best known practitioner of this defense may be former Patriots linebacker
Tedy Bruschi, who played defensive end in Tomey's scheme. ==References==