Playbooks

Breakdown

Curl Flats out of Shotgun Stack Y Off is a quick, half field concept built to punish zone coverage on the strong side. The diagram shows the outside receiver running a curl at roughly 10 yards while the stacked receiver behind him works underneath into the flat, creating a natural high low read on the flat defender. On the backside, the two receivers cross with one clearing vertically upfield while the other breaks back toward the sideline, giving the quarterback a bailout option if the strong side is jumped. Primary progression starts with the curl, works down to the flat, and comes back to the backside crossing route if the boundary defenders squat.

Defensive Reads

Watch the flat defender at the snap, if he sits and does not widen the flat throw is dead and you need to go to the curl behind him. Key the deep third safety on the strong side, if he rolls down into the curl window before the snap check to the backside crossing routes immediately. Identify man coverage by seeing the cornerback bail with the outside receiver at the snap, that tells you to hot route the flat runner vertically for a big play against grabby man technique. This concept struggles against a Cover 4 shell with squatting corners since both the curl and the flat get taken away by the same defender, so be ready to check to the backside route or a different play in the set. Look for a user linebacker sitting in the shallow flat, if he stays home this route dies quickly and you should reset to the curl or the far side crosser.

Usage Tips

Use this against Cover 3 and Cover 2 shells where the flat defender has to widen and the curl sits in the hole behind him for an easy pitch and catch. Check the depth of the underneath linebackers before the snap since a curl route into a sunk zone will get contested unless you throw with anticipation. Hot route the flat runner to a corner or a burst up the seam if you see man coverage with a corner playing outside leverage. Pair this play with PA Jet Sweep or RPO Alert Out from the same set so the defense has to respect the run and the jet action before you come back to this quick strike concept. Best called on second or third and short to medium since the curl and flat combo takes what the defense gives without needing a deep shot.