Playbooks
Shallow X-Dig is a classic levels concept built off the trips side, pairing a shallow crosser with a deep dig to attack both man and zone coverage. The X receiver runs a shallow drag underneath while a deeper receiver breaks in on a dig route, creating a natural high low read that stresses linebackers and underneath zone defenders in the middle of the field. This is a passing play with no play-action or RPO elements, and the blocking scheme is a standard five man protection designed to hold up long enough for the dig to develop. The primary read progression starts with the shallow crosser to bait linebackers, then works to the dig sitting behind them, with the fullback or check release out of the backfield as a checkdown against a hard blitz.
Read the middle linebacker depth at the snap, since a shallow drop signals zone coverage that will clog the shallow crosser and force you to the dig late. Watch for a user controlled defender sitting in the shallow zone or spying the crosser, which is a strong indicator you should skip straight to the dig route. Check safety alignment pre-snap, a single high safety usually means Cover 3 or man coverage underneath, both of which are vulnerable to the levels concept if the routes are run with proper spacing. Look for corners playing off coverage on the outside receivers, which usually means the defense is sitting on shorter routes and will try to squeeze the dig, so be ready to move to your checkdown. If you see a two high shell rotate down into a blitz post snap, get the ball out immediately to the shallow crosser or checkdown back before the pocket collapses.
Use pre-snap motion or a hard count to identify if the defense is showing man or zone before the snap, since this concept plays differently against each shell.
Against man coverage, key the shallow crosser to pull defenders and open a natural rub for the dig route running behind it.
Against zone, especially Tampa 2 or Cover 3, hold the ball a beat longer and let the dig sit down in the window between the linebacker level and the safety.
This play works best on second and medium to third and medium situations where the defense is more likely to sit in zone rather than bring pressure.
Pair this call with Mesh or Smash from the same set to keep the defense guessing between low crossing concepts and high low corner route combos, forcing linebackers to respect multiple shallow threats.
If the defense shows a heavy blitz look pre-snap, consider hot routing the running back to a quick flare or check the play to HB Dive to punish the aggressive front.