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Quick Reference
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Breakdown
Mtn Corner Slot Choice lines up from Shotgun Trio Y-Flex with 11 personnel and sends the backside receiver in motion pre-snap toward the boundary before the ball is snapped. At the snap the outside receiver on that side runs a deep corner route while the motion man works underneath on a choice route, and the inside slot to the play side runs a mountain corner breaking away from the formation while the tight end climbs a vertical seam up the middle. The five offensive linemen stay in to protect, making this a full drop back pass play designed to attack zone coverage with a high low stretch on the boundary side while the choice route gives a built in answer versus man. The primary read starts with the mountain corner route, works down to the seam climber if that window is capped, and finishes with the choice route as the built in answer against man coverage.
Defensive Reads
Pre-snap, watch how the defense reacts to the receiver motion, a defender running across with the motion man signals man coverage and tells you the choice route will be open late. Check safety depth before the snap, a single high safety struggles to help over the top on both the corner route and the seam simultaneously, so identify which one he leans toward. Post-snap, key the flat or curl defender to the play side corner route, if he sinks too deep the mountain corner sits down underneath him for an easy completion. Watch for man to man press corners jumping the choice route early, since the route stem is designed to freeze defenders who bite too hard on the initial break. Five man protection means this play is vulnerable to extra rushers, so pre-snap identify overload blitz looks and be ready to check to a quicker concept if the offensive line is outnumbered.
Usage Tips
Use the pre-snap motion to identify man versus zone before the snap, if the defender follows the motion man across the formation you are getting man coverage and the choice route becomes your first look.
Against two high safety shells trust the mountain corner route to sit down in the void between the flat defender and the deep half safety.
This play pairs well with Mtn Corner Y-drag and Mtn Shock Slot Dig in the same set since the mirrored motion and route shells look identical pre-snap but attack different levels, keeping linebackers and safeties guessing.
Best called on second and medium or third and long when you need a defined progression against zone drops rather than a scramble drill concept.
If the corner route is capped by a deep half safety, immediately move to the seam climbing tight end since that route naturally occupies the middle linebacker in zone drops.
Hot route the seam runner into a shallow drag versus heavy blitz looks to give your quarterback a quick outlet since all five linemen are locked into protection.
