What is Cover 0 in football?
Cover 0 is man coverage with nobody left deep. Every defender takes a receiver, everybody spare comes after the quarterback, and there is no help behind anyone. The zero is the number of deep defenders, not the number of rushers. It is the fastest way to make a quarterback throw before he is ready, and the fastest way to give up a touchdown when he does not.
Why Cover 0 works
It puts one more player in the rush than they can block
Every offense can block a fixed number of rushers. Cover 0 sends one more than that number, so somebody arrives unblocked every single time. The quarterback is not being pressured, he is being timed, and the throw has to be out before the free rusher covers the distance.
Nobody has anything to read
There is no drop, no landmark, no pattern to match and no zone to hand a receiver off into. Each defender has one person and the rushers have one path. For a team that has had three practices, a call with nothing to think about is worth more than a call that is schematically better.
It takes away the check-down entirely
A quarterback under pressure looks for the shortest open man. In zone that man is always there, sitting in a soft spot. In Cover 0 the back out of the backfield has a defender attached to him from the snap, so the easy answer to pressure is gone at the same moment the pressure arrives.
The same bet at five players and at eleven
Cover 0 does not change shape with team size. What changes is how many players the spare bodies let you send.
- Five players, one coming · 5v5Five players, one coming in 5v5: Mudslide's mirror image. The Will comes from the other side and the safety rotates down onto the slot he vacated, so again four men are covered and a fifth is in the quarterback's face. Calling all three pressures in a game is the point: the coverage behind them never changes, so a defense that can play Cover 1 can play every one of these on the same Saturday, and an offense that has solved one of them has solved none of the others. If an opponent keeps beating the pressure with a quick throw to the slot, this is the call that puts a deeper, faster defender on that slot.
Four defenders on the four eligible receivers and the fifth rushing. At this size Cover 0 is close to the default rather than a gamble, because there is no spare defender to keep deep even if you wanted one.
- Eleven players, five coming · 11v11Eleven players, five coming in 11v11: Six rush the gaps and everybody left is locked in man on an eligible, the goal-line call for a passing down inside the five. With the end line behind them the defenders can play everything from underneath, which is why man is safer here than anywhere else on the field.
The same instruction to every cover man, with five rushers instead of one. This is a goal-line picture on purpose: with the end line behind you there is no deep ball to give up, which is where Cover 0 is safest.
How to teach Cover 0 in one practice
- 1
Count out loud before you rush
Point at receivers first, rushers second. The failure that decides games is two defenders on one receiver and nobody on another, and it happens because somebody decided to rush without checking that everyone was covered. Make the count a spoken ritual on every Cover 0 snap.
- 2
Line up inside and slightly off
A yard inside and a yard back. Inside because the middle of the field is where you have no help at all, and off because being beaten deep in Cover 0 ends the drive. Young defenders want to crowd the receiver and grab. Teach the cushion first.
- 3
Eyes on the waist, never on the quarterback
This is the hardest thing to teach and the thing that decides whether Cover 0 survives. A defender who peeks at the quarterback loses half a step, and half a step with nobody behind him is a touchdown. Tell them: you will never see the ball, and that is correct.
- 4
Rush the near shoulder, not the middle
Rushers should attack the shoulder of the quarterback's throwing arm and keep him from sliding that way. A rusher who runs straight at a quarterback lets him step around and buy two more seconds, which is exactly the time Cover 0 cannot afford to give.
- 5
Name the quarterback's keeper
In any format where the quarterback may run, one rusher is told he is the spy the moment the ball is tucked. Without that instruction every defender has his back turned and a quarterback simply walks for the first down.
Three ways to make it safer
Keep one player home, and you have Cover 1
Take the spare rusher and stand him in the deep middle instead. You have given up the free rusher and bought insurance against the one defender who loses. This is the trade almost every coach should make after the first long touchdown.
Press only the receivers who cannot beat you deep
Cover 0 does not have to be uniform. Crowd the short, slow receivers and play the fast one with a five-yard cushion. The pressure still gets home, and the only route that actually beats this coverage has a defender waiting for it.
Call it on their down, not on yours
Third and long, a two-minute drive where they must throw, or inside the five where there is no deep field left. Cover 0 on first and ten is a coin flip you did not need to take, because the offense has every route available and all day to run it.
What changes in your format
5v5 and NFL Flag
Cover 0 is closer to the normal call here than it is anywhere else, because five defenders against four eligible receivers leaves exactly one spare and rushing him is a reasonable default. Check your rulebook for the rush line and who may rush before you plan around it. In NFL Flag the quarterback cannot run, which removes the scramble problem and makes this the safest version of Cover 0 on the shelf.
6v6 and 7v7
Seven defenders against five eligible receivers leaves two spare, so Cover 0 means a genuine two-man rush rather than a lone rusher. That is enough pressure to matter and it is where the call starts being a real choice: those same two players could instead be a deep safety and a robber, which is a far sturdier defense on most downs.
9v9 and 11v11
This is where Cover 0 is a pressure call rather than a coverage call. Five or six rushers against five blockers means somebody is unblocked by design, and the coverage behind it is simply the price of sending them. Almost every Cover 0 at this size is a goal-line or third-and-short call, where the deep ball you would be giving up does not exist.
When not to call Cover 0
Against a quarterback who gets rid of it fast
The whole call is a race between your rusher and his release. A quarterback who throws a three-step slant on rhythm wins that race every time, and then your beaten defender is chasing a receiver with nobody in front of him. Quick game is the direct counter to Cover 0 and good offenses know it.
Against crossing routes and rubs
Two receivers running at each other in traffic is designed to make man defenders collide. In any other man call the mistake costs yards. In Cover 0 the receiver who comes out clean has open grass all the way to the end line, which is why mesh beats this coverage worse than it beats anything else.
When you are protecting a lead
Cover 0 converts every play into a high-variance outcome: a sack or a long gain. Late in a game you are ahead in, variance is the opponent's friend. Sit back, make them complete six passes in a row, and let the clock do the work.
When you have not practised the switch
Cover 0 is the coverage least forgiving of an unrehearsed detail. If your defenders have never traded receivers on a crossing route in practice, they will not invent it on Saturday, and the first mesh concept you see will be a touchdown rather than a lesson.
Take it to your team
Draw your plays in the football play designer, collect them in the free playbook maker, and print printable play cards so every player knows them come Saturday.
Draw cover 0 for your own team
Open the designer, put your defense on the field, and save it to your playbook.
Open the free play designerRelated questions
What does the zero in Cover 0 mean?
Is Cover 0 the same as a blitz?
Is Cover 0 a good defense for youth football?
How do you beat Cover 0?
What is the difference between Cover 0 and Cover 1?
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Coach Ray Carroll
Coaches 5v5 flag football from kindergarten through 7th grade in San Mateo and San Carlos, California, and built RC Football to design, teach and print the plays his own teams run.