Playbooks

Mesh Crossers lines up out of Shotgun Tight Open with 11 personnel and puts two crossing routes underneath while a third receiver clears out deep over the top. The two X's on the left run a low mesh combo, one settling into a shallow drag across the formation while the other climbs into a corner route stem, and the right side receiver runs a deep crosser that stretches all the way across the field to the opposite sideline. This is a man beater built to create natural rubs and pick opportunities at the mesh point, forcing defenders to fight through traffic while the deep crosser occupies zone defenders over the top. Your primary read starts with the shallow drag underneath, then works to the mesh crosser breaking to the corner, and finally to the deep crosser if the coverage bites down on the short stuff.
Watch for user controlled linebackers sitting in the shallow zone or lurking in the mesh area, since they can jump the underneath drag route if the quarterback stares it down too long. Cover 3 with a hard flat corner squeezing the mesh point will clog the shallow crossers, so key the corner depth presnap and be ready to layer the throw over the underneath defenders to the deep crosser instead. Man coverage with no safety help over the top is the ideal shell for this concept, since the natural rub at the mesh point will spring one of the crossers open against tight man technique. Cover 2 shells with safeties sitting deep can be had if you drive the deep crosser under the safety while the mesh routes hold the underneath linebackers, but a fast trigger safety on a robber technique can undercut this window. Blitz-heavy defenses that bring extra rushers off the edge will struggle to get depth in their underneath zone drops, opening up the shallow drag as a quick answer if protection breaks down before the deep crosser develops.
Presnap identify if the defense is showing man coverage by checking for tight press alignment on the outside receivers, since the mesh concept thrives against man because of natural pick opportunities at the crossing point.
If you see two deep safeties and soft corners, that is a zone shell, so prioritize the deep crosser sitting down in the void between zone defenders rather than forcing the underneath mesh.
Use your hot route to keep the running back in on protection against exotic pressure looks or five and six man blitz packages, since the mesh point takes a beat to develop and you need time in the pocket.
This play works best on second and medium to second and long when defenses are more likely to play zone coverage, but it also punishes man to man blitzes on third and medium.
Pair Mesh Crossers with Mesh Spot or Mesh Clearout in your play-calling sequence to keep the defense guessing on which receiver clears out versus settles, since the route concepts look nearly identical at the snap.