Playbooks

Y Curl out of Shotgun Bunch trips the formation to one side with three receivers stacked tight. The backside X releases on a deep out breaking away from the bunch while the two outside bunch receivers push vertical up the numbers, and the inside bunch man runs a short flat route crossing underneath. The Y (slot bunch receiver) sits down on a curl route at the sticks, working back to the quarterback as the primary target against zone drops. This is a zone beater built around the curl-flat combo, with verticals from the outside bunch receivers occupying deep defenders and clearing space for the Y curl sitting in the intermediate window. Primary read progression starts with the Y curl over the middle, then works to the flat route underneath, and finally to the backside deep out if the defense rolls coverage away from the bunch.
Pre-snap, key the strong safety over the bunch: if he walks down near the line of scrimmage expect man coverage or a blitz look, if he sits deep expect zone drops. Watch the flat defender post-snap since he determines whether the curl or the flat route is open, if he sinks with the curl route the flat man is your outlet. This play struggles against Cover 3 Cloud or Cover 6 with an aggressive corner sitting on the curl since that defender can jump the route with outside leverage. User-controlled linebackers dropping into the curl window are the biggest threat, look to see if the defense is spying that zone with a rat linebacker before committing to the primary read. Man coverage with no help over the top is exploitable if the Y curl breaks away from tight man leverage, but a nano blitz up front can disrupt this play before routes develop so account for backside protection off the edge.
Use pre-snap motion or a hard count to identify if the defense shifts a defender over the bunch, this tells you whether you are getting man or zone coverage. Against zone shells like Cover 3 or Cover 4, trust the Y curl sitting down in the intermediate zone since the verticals from the bunch will hold the deep defenders in place. If you see Cover 2 or Cover 4 with a hard flat defender sinking underneath the curl, hot route the flat man into a quick out or speed him up to beat the squeeze. This play hits best on second and medium to third and medium since the sticks alignment on the curl route matches those distances naturally. Pair this with Bunch Verts or PA Divide Wheels in the same set to keep defenders honest on the vertical shell, then come back to Y Curl once they start jumping the deep routes.