Sail
Three-level vertical stretch to one side
- Read #1
- Reads 2+
- Checkdown
- Telestrator
The outside receiver runs a go/fade, the inside slot or TE runs a corner ("sail") route at 12-15 yards, and the flat receiver runs a quick out or swing. This is an elite Cover 3 beater, the CB carries the go route deep, leaving the curl/flat defender alone against the 15-yard corner and the flat route. He cannot cover both because the corner route is too deep. A core Air Raid play (Mumme and Leach's "Y-Sail"). Sean McVay's Rams and the Chiefs feature it extensively.
Reads
5 ROUTESTap a route to trace it on the field.
Read progression
Read the curl/flat defender on the trips side. If he sinks to the corner, throw the flat. If he drives on the flat, hit the corner behind him into the void. The go route removes the deep CB from the equation.
Why it works
The go route removes the deep CB, leaving the curl/flat defender alone against receivers at two different depths (15-yard corner and 3-yard flat). He cannot cover both, the QB throws opposite his movement.
Conflict defender
The curl/flat defender, alone against the 15-yard corner route and the flat route at different depths. He can't cover both.
Origin
A core Air Raid play (Mumme and Leach's "Y-Sail"). Sean McVay's Rams and the Chiefs feature it extensively.
Sail vs coverages
11 RATED- Cover 3Beats it
The go route clears the deep-third CB vertically, leaving the sail/corner route running free behind the flat defender who is occupied by the flat route.Show reasoning
Conflict defender. Flat defender (curl/flat zone)
Why the offense wins. The go route clears the deep-third CB vertically, leaving the sail/corner route running free behind the flat defender who is occupied by the flat route.
Key adjustment. Pattern-match with the flat defender carrying the corner and the deep CB staying on the go.
- Cover 6Edge
Sail to the boundary Cover 2 side creates the same flood stretch.Show reasoning
Conflict defender. Boundary flat defender
Why the offense wins. Sail to the boundary Cover 2 side creates the same flood stretch.
Why the defense wins. Run into the quarters side, the corner carries the go, the safety drives the sail off #2 and the SAM widens with the flat; the stretch is matched by rule.
Key adjustment. Check the quarters half to the sail side so the three levels are matched by rule.
- RobberEdge
The flat + sail both stay perimeter.Show reasoning
Conflict defender. Robber safety
Why the offense wins. The flat + sail both stay perimeter.
Why the defense wins. The intermediate sail can be picked off if the QB doesn't see the robber.
Key adjustment. Keep the robber sinking under the sail; the man defender on the back takes the flat.
- Cover 0Toss-up
Three-level routes take time that Cover 0 pressure doesn't give you.Show reasoning
Conflict defender. Linebacker matched on sail runner
Why the offense wins. The sail/corner can win if the protection holds, the flat is the quick hot.
Why the defense wins. Three-level routes take time that Cover 0 pressure doesn't give you.
Key adjustment. Bring the pressure; three levels take time the rush does not give.
- Cover 1Toss-up
Man defenders carry all three levels with no zone seams; the flat by the back only ever occupies his own man, so there's no conflict to read.Show reasoning
Conflict defender. Man defender on the sail (nickel/LB over the slot or TE)
Why the offense wins. The sail comes from a TE or slot matched on a nickel or LB — the vertical stem then the corner break wins toward the sideline, where the single-high FS has no reason to help.
Why the defense wins. Man defenders carry all three levels with no zone seams; the flat by the back only ever occupies his own man, so there's no conflict to read.
Key adjustment. Carry the sail with the slot defender through the vertical stem; the FS has no reason to help toward the sideline.
- Cover 2Toss-up
With the flat route showing in front of him, the squat CB sinks under the sail and the half safety drives on the throw — the window is tight and closes fast.Show reasoning
Conflict defender. Flat defender (curl/flat zone)
Why the offense wins. The go holds the deep-half safety on top while the sail breaks into the hole behind the squat CB — the same turkey-hole window Smash attacks.
Why the defense wins. With the flat route showing in front of him, the squat CB sinks under the sail and the half safety drives on the throw — the window is tight and closes fast.
Key adjustment. Have the corner sink under the sail with the flat showing and the half safety drive on the throw.
- Cover 4Toss-up
Quarters match allows the CB and safety to bracket the sail from both sides.Show reasoning
Conflict defender. Cornerback (quarters zone)
Why the offense wins. The corner route is the primary read; it sits between the quarters CB and the safety.
Why the defense wins. Quarters match allows the CB and safety to bracket the sail from both sides.
Key adjustment. Have the corner and safety bracket the sail from both sides; the go is the safety's vertical.
- Tampa 2Toss-up
With the MIKE carrying the middle, the Tampa 2 half-safety plays wider than a normal Cover 2 half and stays on top of the sail, while the squat CB sinks underneath it.Show reasoning
Conflict defender. Deep-half safety (sail side)
Why the offense wins. The go stretches the deep-half safety while the sail sits behind the flat defender.
Why the defense wins. With the MIKE carrying the middle, the Tampa 2 half-safety plays wider than a normal Cover 2 half and stays on top of the sail, while the squat CB sinks underneath it.
Key adjustment. Have the squat corner sink under the sail while the wide half safety stays on top.
- Cover 2 ManToss-up
Two-deep safeties help over the top, press man trails the routes.Show reasoning
Conflict defender. Press cornerback
Why the offense wins. The sail can win vs man if the protection holds.
Why the defense wins. Two-deep safeties help over the top, press man trails the routes.
Key adjustment. Trail the sail runner and let the half safety drive down on the corner break.
- BracketToss-up
If a Sail receiver is bracketed, the stretch dies.Show reasoning
Conflict defender. Flat defender
Why the offense wins. Sail's 3-on-2 still works if the bracket is opposite.
Why the defense wins. If a Sail receiver is bracketed, the stretch dies.
Key adjustment. Set the bracket on the sail runner so the stretch drops to two-on-two.
- Palms / ClampTough
The corner carries the vertical clear-out man-for-man while the safety, keying #2's vertical stem, drives down on the 12-yard sail — the intermediate window closes from the top down.Show reasoning
Conflict defender. Palms-side cornerback
Why the offense wins. The flat is the safe outlet.
Why the defense wins. The corner carries the vertical clear-out man-for-man while the safety, keying #2's vertical stem, drives down on the 12-yard sail — the intermediate window closes from the top down.
Key adjustment. Have the corner carry the go, the safety drive the sail off #2 and the linebacker widen with the flat.