Playbooks
Go Y-under is a vertical shot play out of Shotgun Spread Y-Slot that pairs two outside go routes with the Y (tight end) running an under route across the middle at the linebacker level. It is primarily a man beater, designed to isolate the go routes on single coverage while giving you a checkdown or big-play window if the safety bites on the deep threats. The primary read progression starts outside with the go routes against man coverage, then works down to the Y under route as the built-in answer versus zone drops or when the deep routes are covered.
Identify single high safety looks pre-snap, this signals man coverage underneath and tells you the go routes have favorable one on one matchups. Watch cornerback depth at the line, soft or off coverage means the corner is playing for the underneath route and the go route has a clean release for a deep shot. Post snap, track any user controlled defender dropping into a lurk position over the middle, that player is trying to jump the Y under route so be ready to move to your outside progression. Cover 3 with a deep middle defender can take away the Y under throwing window, in that case trust the go routes to win on the outside against the corners. Beware of a disguised blitz where the linebacker responsible for the Y under route crashes the pocket instead, this leaves the under route wide open for an easy completion if you get the ball out fast.
Check safety alignment before the snap, if you see two high safeties rotate to a single high shell post snap that usually means man coverage underneath and your go routes have a real shot to win.
Use the Y under route as your rhythm throw versus zone coverage, it settles in the soft spot behind linebackers and in front of deep zone defenders for a reliable gain.
This play shines on second and long or third and medium when defenses are more likely to play off coverage or zone drops, giving the Y under route room to operate.
Pair this call with Y Stick or Curls earlier in a drive to condition the defense to expect shorter routes, then hit Go Y-under to punish overaggressive linebacker or safety rotation.
If you see press man on the outside receivers, consider a hot route to release inside first to avoid a jam that kills the timing of the go route.



















































