Playbooks

Go DBL Post out of Shotgun Trips Y-Flex sends both the outer trips receiver and the inline TE on deep post routes, stacking the middle of the field with a double post concept while the slot receiver runs a drag underneath and the backside X runs a comeback breaking to the sideline. The HB releases into the backfield checking for blitz before running a shallow drag through the middle as a checkdown. This is a Cover 2 and Cover 4 beater designed to attack the deep middle void between the safeties, with the primary read starting on the post routes to see which safety commits, then working down to the drag if both posts are covered.
Watch both safeties before the snap: if they are shaded to one side or shallow, the double post can split them for an explosive gain. Cover 3 with a single high safety is the toughest shell to beat here since one deep defender can rob the post working to his side, so key on the free safety depth and break direction after the snap. Look for a user-controlled safety sitting in the deep middle hole, since he can jump either post route if the quarterback stares it down too long. Man coverage with no help over the top gets exposed fast on the posts, but watch for a linebacker or nickel defender sinking into the shallow drag lane to take away the checkdown. Blitz-heavy fronts can disrupt this play before the posts develop, so identify pre-snap pressure looks and be ready to check to the HB drag or comeback as a quick answer.
Pre-snap, identify if the defense is playing two deep safeties or a single high safety, since this play is built to split two deep defenders with the double post. Against Cover 2, read the deep safeties: if one bites on the TE post the other cannot cover both, so throw opposite the rotation. Use the comeback route on the backside X as a built-in answer versus aggressive corners jumping the post, giving you a quick outlet on the boundary. Call this on early downs or second and medium when you have time in the pocket, since both posts take a full three to five step drop before breaking. Pair this with Four Verticals or Curls from the same set to keep the defense honest on deep shots, then mix in Stick or WR Smash to punish defenders who start cheating the top of the coverage.