Walk into most defensive staff rooms, ask what their #1 blitz is, and it will most likely be some variation of this:
The image above is “America’s Fire Zone Blitz.” A Sam/Mike edge blitz with full line movement, and the defensive end to the boundary dropping to the low hole (replacing the Mike). A “Fire Zone” is simply a blitz that sends five men and plays three under-three deep behind it (Cover 3). Many times a defensive lineman is used to drop to the low hole (MOF), or to replace a blitzing linebacker (curl/flat). Other variations, like the one below, drop the safety into the box and have the DE sink to the curl/flat.
The emphasis for a defense in this type of blitz package is sending more players than an offense can handle to a certain side. Most offenses have hot routes to counteract a blitzing LB. To counter this, defenses started to drop D-lineman, or exchange the LBs responsibilities, into the vacated spots or rolling secondary players to the hot receivers. Here is an example of a Cross-Dog blitz (the term “dog” = LBs) with the DE to the boundary replacing the Will’s coverage responsibility.
Bill Arnsprarger is considered by football historians as the Godfather of the Zone Blitz. In 1971, Arnsparger began using a hybrid DE named Bill Matheson in coverage. This created a de-facto 3-4 and would eventually lead to a new era of defensive football in the NFL. The schemes relevance was solidified in ’72 with the only undefeated season in NFL history. The “No Name” defense ushered in the “Zone Blitz Era.”
The reason Fire Zones are so prevalent is they are easy to run and can use any player on the field. They are also considered a “safe” way to blitz. Arnsparger, considered the blitz safe because he was still playing zone behind a pressure. Legendary DC Dick LeBeau visited Arnsparger early in his career to gain knowledge about the scheme. The words “safe pressure” resonated:
“Bill’s catchphrase was that he wanted to get ‘safe pressure,’ on the quarterback, and that expression stuck with me because that was a very succinct way to summarize exactly what I was looking for. Safe pressure. I walked out the door saying those words to myself.” – Dick LeBeau
To run a Fire Zone, a defense has to have two curl/flat players (or seam players), a low hole player (MOF), and three deep third players. This allows a defensive coordinator to get creative because the blitzers can come from anywhere on the field. If looked at as a numbers game, the offense should be able to handle the rush. Where Fire Zones work is by overloading a side, forcing the quarterback to move, and creating short inaccurate throws to hot WRs. The dropping D-lineman assists in the overload by trying to bait the nearest O-lineman into taking him, only to drop and leave a gaping hole for an oncoming rusher. Continue reading “Building a Better [Zone] Blitz”