Coach Nana breaks down the Cover 0 defensive scheme, where the "zero" means there are no deep safeties. In this man-to-man defense, the corners cover the outside receivers, and both safeties, including the free safety, come down to play man coverage. This defense is often used when the defense is sending "double pressure," which necessitates the free safety matching up with a slot receiver to maintain numbers. Cover 0 is also commonly played in goal-line situations where there is less risk of the defense getting beat deep due to the limited field space.