Posted January 18, 2011 by Guest Author in Football | No comments yet
The most important component of your cover 4 coverage is the play of the Safeties. They are a critical part of your run defense as well as helping to shut down the pass. In addition, the safeties must be coached on the mental aspect of making checks for the coverage on the field.
Run Stopping
The safeties have a huge responsibility in cover 4 Coverage whenever we are using the Read Check. Read is used when there are one or no receivers removed, meaning split out from the line of scrimmage (LOS).
In Read, the safeties are the box player, or contain player. No outside runs can get outside of them. Because they are heavily embroiled in the run game, the safety alignment is at 7 to 9 yards, on the outside shade of the end man on the line of scrimmage (EMOLS).
At the snap, the safety bounces in place 2 times and reads the EMOLS for a high hat/low hat read. On low hat he assumes run and attacks the LOS as he reads through to the backfield for flow.
On flow to, he immediately sets to the LOS and boxes the play. On flow away, he throttles down at 4-5 yards and checks for Counter-Reverse-Bootleg. He is all set to beat any of these or insert on a cutback.
If the safety reads high hat in Read, he checks the route of the #2 receiver, if there is one (usually a Tight End). If #2 is vertical, the safety locks on him. On an inside or outside release by #2, the safety looks to rob the #1 receiver, attacking to his inside hip while the corner plays outside and over top of #1.
Shutting Down the Pass
When we use the Alert check in quarters coverage, they become a pass-first player. The safeties are now playing more like a traditional Cover 2 corner. Alert is used when there are 2 or more receivers removed from the LOS.
After calling the Alert check, the safety bumps out to inside shade of #2. He could also split the difference between #2 and EMOLS, or always align on the hash – depending on your preference.
The coverage zone for the safety is a deep half. The only time the corner will be covering any deep routes is if both removed receivers run verticals.
On the snap, the safety is backpedaling from an alignment of 12 to 14 yards, reading the #2 receiver. If #2 goes vertical, the safety has him. If he goes in or out, the safety takes his eyes to #1.
The corner and safety are working a vertical line rule in Alert check. This means that if their two receivers cross over an imaginary vertical line, the corner breaks off of #1 and works to #2, and the safety takes #1.
The vertical line rule works well. When #2 runs an out, the safety snaps his eyes to #1, and sees him running a post right to him. The corner opens up with the out route by #2 as he crosses the vertical line, and drops off to take him in the flat. Since it is a match-up coverage, if #2 were to wheel, the corner is locked on him and has it taken care of.
IF #1 and #2 both run verticals, they by no means cross the vertical line, and the corner and safety play the 2 verticals. This prevents you from having the problem of Cover 3, where 2 receivers run vertical in a zone covered by 1 player.
making Checks
You need to recognize the mental capabilities of your safeties before throwing a lot of checks at them. The fact is, when the bullets are flying, they will call what they know. For this purpose, I find Read, Alert, and Survivor to be the most necessary checks.
These checks cover 0 or 1 receiver removed (Read), 2 receivers removed (Alert) and Trips (Survivor).
Be sure to have a formation identifying period in each practice, so that your safeties can make their checks. Make sure to work back-ups in this period as well.
Instill certainty in your safeties as they make their checks. Let them know that every check works, but some are more appropriate against one look than another. If they are wrong, it is not a disaster.
Be sure that the rest of the secondary knows that the safeties are the generals on the field. Whatever call they make stands, and there is to be no arguing or suggesting! The only role of the corners and outside linebackers in making the check calls is to repeat the call of the safety – right or wrong.
Joe Daniel is an experienced coach at both the High School and College levels. He has written the Football Defense Report blog for over two years with more 150 articles on coaching defensive football available free. In addition, he is the author of an eBook on installing the 4-3 Defense that is available for immediate download!