Playbooks
PA Flood out of Singleback Trips Close is a play-action concept that pairs a hard run fake with a three-level flood to the trips side, stretching one side of the field vertically and horizontally to overload a single defender or zone drop. The backside typically holds a comeback or dig to keep safeties honest if they cheat, while the offensive line sells the run to freeze linebackers before dropping into pass protection. This is a zone beater at its core, since it stacks a flat route, an intermediate out or corner, and a deep route on the same side, forcing zone defenders to pick their poison, but it can also work against man coverage if the flat route creates natural separation against a linebacker or nickel in man. The primary read progression starts with the deep corner or vertical route to see if the safety bites on play-action, then works down to the intermediate out breaking route, and finally checks down to the flat route if the underneath defenders sink too deep.
Cover 3 with a single high safety is the toughest shell for this concept, since the flat defender, hook defender, and deep third corner can each take away one level of the flood, so expect to check down more often against this look. Cover 2 shells are vulnerable because the flat route occupies the corner and the intermediate out route sits in the void between the corner and safety, giving you a clean throwing window if the safety does not drive downhill fast enough. Watch the play side flat defender at the snap, if he widens with the run fake or bites hard, that confirms play-action is working and you should climb straight to the intermediate or deep route. Man coverage with a single high safety (Cover 1) exposes the flat route against a linebacker in man, since the running back or tight end running the flat can easily separate with a quick out or angle release. Be alert for user blitzes off the edge or A gap pressure, since the flood concept takes a full progression read, so if the defense shows six or more in the box pre-snap, plan to get the ball out on rhythm to the flat instead of climbing the full progression.
Look at the safety depth pre-snap, if both safeties are shaded within 10 yards of the line of scrimmage this is a great spot to call PA Flood since play-action will hold them even longer.
Use the flat route as your built-in hot route against pressure, if you see a nano blitz or overload look pre-snap, get the ball out quick to the flat and let your receiver work after the catch.
This play shines on early downs (first or second and medium) when defenses are more likely to respect the run fake, so mix it into your play-calling after a couple of successful HB Duo or HB Stretch runs to keep linebackers creeping up.
Pair PA Flood with Slants or Stick from the same set, since those quick game concepts punish teams that start jumping the flood routes, keeping the defense honest and off balance.
If the corner route is covered by a deep half safety, work your eyes to the intermediate out route immediately, do not stare down the top of the flood or you risk a user pick from a lurking linebacker.