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Breakdown

Y Corner KO is a man beater out of Shotgun Trey Open Offset that isolates the Y receiver on a corner route while the trey side runs off coverage underneath to clear space. The offset back stays in to chip or check release, giving the quarterback time to work the deep corner as the primary read against outside leverage corners. This is a pure pass concept, not an RPO or play-action look, designed to attack Cover 1 and Cover 3 rotations where the corner route can split the difference between the deep half safety and the sideline.

Defensive Reads

Watch the corner over the Y receiver at the snap, if he opens his hips to run with the corner route early it signals man coverage and you should trust the route on time. Key the deep safety rotation post snap, if he stays in the middle of the field it usually means Cover 3 and the corner route has room to sit down between the numbers and the sideline. Beware of Cover 4 or Cover 2 shells with two deep safeties, since the outside corner route will run into help over the top and get squeezed by the deep quarter or half defender. Identify user controlled lurk defenders sitting in the flat, a smart user will jump the corner route break if they diagnose the concept quickly, so counter with the underneath hot route instead of forcing the throw. Read linebacker depth at the snap, shallow drops or blitz packages leave the underneath trey routes wide open as checkdowns if the corner route gets jumped.

Usage Tips

Pre-snap, identify if the corner over the Y is playing outside shade or inside shade, since outside shade forces you to trust the corner route to win late against trail technique.

Look for single high safety shells before the snap, this play thrives against Cover 1 and Cover 3 because the corner route occupies the flat defender and the deep safety at the same time.

Hot route the underneath trey routes to a quick out or hitch if you see zone drop defenders sitting on shallow crossers, this keeps the timing intact without waiting on the corner to develop.

Use this play on second and long or third and medium situations where defenses lean on zone shells, since the corner route stretches the sideline vertically and horizontally at once.

Pair this with Four Verticals or Mtn Four Verticals earlier in a series to condition the safety to stay deep, then come back to Y Corner KO to attack the same shell once the safety starts cheating toward trips.

Other Plays in Trey Open Offset