Playbooks

Four Verticals out of Shotgun Trey Open Offset sends both outside receivers straight up the field on vertical routes while the slot receiver from the trey side breaks into a deep crosser toward the opposite sideline. The inline TE runs a quick out breaking into a vertical seam route up the numbers, and the HB stays in to check block before leaking out if the pocket holds. This is a classic zone beater designed to stretch Cover 2 and Cover 3 shells horizontally and vertically, with the primary read starting on the seam route from the TE working outside to the far vertical if the safety bites on the crosser.
Watch for two deep safeties pre-snap, Cover 2 shells are vulnerable to this concept because the safeties cannot cover all four verticals without help from underneath defenders. Key the middle linebacker post-snap, if he sinks deep to help on the seam route it opens up the crossing route from the trey slot receiver for an easy pitch and catch. Identify Cover 3 alignment by checking if the free safety sits in the deep middle third, since this leaves the seams open against a single high defender who cannot get to both verticals. Beware of a user-controlled safety sitting in a deep lurk position, as a heads-up defender can jump the seam route if the quarterback stares it down too long. Man coverage with no safety help over the top is the worst matchup for this play against the offense, since press corners can disrupt the vertical timing before the routes stretch the field.
Check the safety alignment before the snap, if you see two high safeties this play is designed to attack the seams before they can rotate over the top.
Use the TE seam route as your first read since it forces the middle linebacker or safety to make a quick decision, then work to the boundary vertical if the window closes.
Hot route the HB into a flat release on third and long to give yourself a checkdown against blitz-heavy calls that leave the play clock working against you.
Pair this play with RPO Peek Slant or RPO Zone Peek earlier in a drive so the defense respects the run action, then hit them with the full vertical stretch when they start crashing linebackers downhill.
Best called on second or third and medium to long when you need to punish a defense sitting in soft zone shells or Cover 2 looks that struggle to cover four verticals with only two deep defenders.