Playbooks

Levels Switch is a trips-side pass concept out of Shotgun Y Trips Wk that combines a deep dig from the backside X receiver with a switch-release levels concept from the trips side. The X receiver runs a deep crossing route from the backside, the two inside trips receivers cross release with one settling into a shallow in-cut and the other climbing to a deeper in-breaking route, while the outside trips receiver runs a vertical seam to clear space. The HB releases to the flat as a checkdown and the offensive line picks up a straight five-man protection. This is a classic Cover 2 beater that stresses zone drop defenders with layered horizontal reads, and the primary progression is deep dig backside first, then work down to the levels crossers underneath before checking it down to the flat route.
Look for two deep safeties pre-snap, this indicates Cover 2 or Cover 4 and tells you the levels crossers and backside dig will have room to work underneath the safeties. Watch the flat defender on the trips side, if he sinks with the underneath crosser instead of staying wide the flat route to the HB becomes the easy answer. Key the middle linebacker's drop, a shallow drop into the levels concept clogs the crossing lanes and should push your read to the backside dig instead. If the defense shows Cover 3 with a single high safety rotating late, expect a lurking underneath defender to jump the shallow crosser, so be ready to climb the progression to the deeper levels route or dig. Man coverage with press corners and no deep safety help is a green light to trust the switch release, since the crossing action naturally creates rub picks that beat man defenders.
Use this on second and long or third and medium when defenses are likely to sit in Cover 2 or Cover 4 zone shells to protect against the deep ball.
Read the backside safety before the snap, if he is shaded to the trips side the backside dig from the X will have a clean throwing lane against Cover 2.
Hot route the outside trips seam runner into a deeper vertical stem if you see a single high safety cheating toward the levels crossers, this keeps the defense honest and opens throwing windows underneath.
Pair this play with Curls X Go or Four Verticals Fix in your play-calling sequence to keep defenders guessing between vertical stretch concepts and this horizontal levels stretch.
Use play action from this same formation shell like PA Y-Out earlier in the drive to slow down linebacker drops, then come back to Levels Switch once you have their zone drops sitting shallow.