Playbooks

TE Attack out of Singleback Wing Pair is a four verts based flood concept with a play-action element built in. The two outside receivers both push vertical seams up the field while the tight end runs a shallow drag/in route underneath crossing the formation, and the wing back releases into the flat to stretch the field horizontally on that side. The backside receiver runs a deep in that crosses the field, giving you a flood to one side and a crosser to the other. Primary progression is flat to seam on the trips side first, working to the backside in route if the flood is capped and safeties rotate away.
Check safety alignment pre-snap, a single high safety tells you the deep in route to the backside will have room to work against man coverage underneath. Identify the flat defender on the trips side immediately after the snap, if he sinks with the seam route the flood route underneath is open for an easy pitch and catch. Watch for user controlled linebackers dropping into the shallow crosser lane, this is the primary defender that shuts down the tight end's drag route. Cover 3 with a hard flat defender takes away the flood concept, so key the corner's depth to decide between the seam shot and the backside in route. Blitz packages that bring pressure off the edge away from the flood side hurt this play since the play action fake holds the offensive line, so identify overloaded fronts before the snap and get the ball out on the quick flat route.
Use this against single high safety looks where the deep in route can find a soft spot behind the linebackers and in front of the safety.
Hot route the flat defender's man to a corner route if you see Cover 2 to remove the natural flat/curl conflict defenders create.
Play action carries well on early downs when you have established the run game from Wing Pair, since the seam routes hold safeties before the flood develops.
Pair this play with Y Stick Heavy or Dragon Spacing on the following snap to keep linebackers honest against the same shallow crossing action.
Best called on 2nd and medium or 3rd and long since the flood side gives you a high low read that produces easy completions against zone drops.