What it is

A blitz is a defensive call that sends more than the usual four pass rushers, often a linebacker or a defensive back. It aims to reach the quarterback before he can throw.

In a game

A blitz leaves fewer defenders in coverage, so it is a gamble. If the quarterback sees it in time, he can throw quickly to the open receiver.

More detail

Blitzes come in many forms: a linebacker blitz, a safety blitz, a corner blitz or a zone blitz. A defense that blitzes usually plays man coverage behind it with a single deep safety. The offense counters with quick throws, screens, hot routes and a running back who stays in to block.

Animated diagram

1. The defense sends more than four rushers: three linebackers and a cornerback join the line.
2. The quarterback sees the blitz and the slot receiver turns his route into a quick slant, a hot route.
3. The ball must come out before the rushers arrive, and the receiver who has fewer defenders near him makes the catch.