Playbooks
Quick Reference
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Breakdown
Go Y-under is a vertical shot play out of Shotgun Spread Y-Slot that pairs a go route from the outside receiver with an underneath crossing route from the Y (tight end) to stress both deep and shallow zones at once. The concept is a man beater at its core, since the go route occupies the deep defender while the Y-under route works across the field against man leverage created by natural traffic, but it also holds up against zone thanks to the underneath crosser sitting in soft spots between linebackers. The primary read progression starts with the go route on any single high safety look or blown coverage, then works down to the Y-under crosser as the checkdown against two high shells or tight man coverage.
Defensive Reads
Pre-snap, identify if the cornerback across from the go route is playing press or off man, press coverage with no safety help over the top is the alignment this play punishes hardest. Watch the free safety depth at the snap, if he stays home in the middle of the field on a single high shell, the go route wins one on one against most man corners. Post-snap, key the underneath linebackers, if they widen out to take away the Y-under crossing route it opens a natural throwing lane for the go route since the deep defender has to choose. This play struggles against Cover 3 with a hard flat defender sitting on the crosser and a deep third corner staying disciplined on the go route, look to check down or scramble if both routes are covered. Watch for user-controlled safeties creeping down to disguise blitz or lurk the underneath crosser, if the safety bites hard on the Y-under route the go route behind him becomes wide open.
Usage Tips
Check the safety count before the snap, if you see one high safety rotate to a deep third or deep half look, throw the go route with anticipation before the safety can get over the top.
Against two high shells like Cover 2 or Cover 4, work directly to the Y-under crosser since the go route will be capped by a deep defender on that side.
Use hot routes to convert the backside receiver into a hitch or slant if you are getting quick pressure, this gives you a shorter throw window without abandoning the shot play mentality.
Sequence this play after running Y Stick or Curls a few times, defenses start jumping the shorter routes and the go route will hit a corner playing too aggressive at the line.
Best used on first down or second and short when defenses are more likely to sit in base coverage rather than bring extra pressure, since the go route needs time to develop.
Pair with Four Verticals or Post Trail in your play-calling script so defenses cannot key on the deep shot without respecting other vertical stress concepts.
