Playbooks

Packer Unders is a trips-side underneath pass concept out of Shotgun Y Trips Wk with a solo receiver to the boundary. From the trips side, the inside receiver runs a drag underneath, the middle receiver runs an out that sits at the sticks, and the outside receiver clears vertically on a go to take the top off and open space for the drag and out. Backside, the single receiver runs a go up the sideline while the RB releases out of the backfield on a swing/flat route to the boundary as a checkdown and man beater against overplayed coverage. The primary read progresses from the drag working across the field, to the out sitting underneath zone defenders, to the backside swing as the outlet against pressure.
Identify the middle linebacker depth pre-snap, if he is sitting shallow in a hook zone he can undercut the drag route and jump the throw. Check for Cover 3 sky or cloud shells, this play is designed to exploit the seams underneath the deep third defenders where the out and drag settle. Watch the flat defender to the trips side, if he widens with the out route it opens the drag behind him for an easy completion. Against Cover 1 or Cover 0 man pressure, key on whether a linebacker or slot defender travels with the drag across the formation, a lurking safety here can jump the crossing route for a big hit or turnover. On the backside, note if the corner presses the single receiver, this signals man coverage and makes the RB swing route a safer immediate outlet against blitz looks.
Use this on second or third and medium when defenses sit in zone shells like Cover 3 or Cover 4 since the drag and out combo settles into the soft spots underneath linebackers and safeties.
Pre-snap, check for a single high safety with corners playing off, this usually means zone coverage and confirms the drag to out progression will be open in rhythm.
If the defense shows press man across the board, get the ball out fast on the drag or use the backside swing as your first read since the trips go route will clear space but take longer to develop.
Pair this play with Levels Y Out or Curls X Go in the same set to keep defenses guessing between high low iso reads and horizontal stretch concepts, this forces linebackers to hesitate on their drops.
Watch out for user linebackers spying the drag route, if you see a defender sitting in that lane pre-snap, hot route the out to a quick hitch or lean on the swing route instead.







































































