Playbooks

FB Flare is a play-action-free dropback pass out of I Form Slot that attacks the flat with the fullback while stacking two vertical routes on the backside. Per the diagram, the FB releases out of the backfield and flares to the flat (blue route) as a checkdown/outlet, while the outside receiver runs a quick out/flat route in the same area and the slot receiver runs a short crossing route into the middle before both converge near the line. On the opposite side the TE runs a vertical seam and the boundary WR runs a deep go route, stretching the defense vertically while the FB flare offers an immediate underneath answer. This is primarily a man beater, using the FB flare as a leverage/rub tool against man coverage while the two verticals occupy deep defenders, and the primary read progression starts with the FB flare in the flat before working up to the crossing route and then the vertical shots if a defender bites underneath.
Pre-snap, key on the weak side linebacker or nickel defender's depth and alignment relative to the fullback, since shallow alignment signals man coverage responsibility on the flare. Watch for a Mike linebacker spying or shading toward the backfield pre-snap, which tips off a scheme designed to jump the FB flare route. Post-snap, user the underneath defender closest to the flare route (often a linebacker or slot corner) to squeeze the throwing lane and force the quarterback to hold the ball longer. This play struggles against zone-match coverages like Cover 3 or Cover 4 where underneath defenders sink into throwing lanes and flow with eyes on the backfield, since the flare has no room to operate and the crosser runs into traffic. Man coverage with no underneath help, especially Cover 1 or Cover 0, is where this play is most vulnerable since defenders can trail the FB flare and crosser with no zone help over the top.
Pre-snap, identify whether the defense is showing man or zone by checking if a linebacker or safety is shaded over the fullback in the backfield, since a defender cheating toward the FB signals man coverage that this play is designed to beat.
Use the FB flare as your first read on third and short or in the red zone, since the flare route is high percentage and gets the ball out fast against blitz-heavy or man-heavy fronts.
If the defense shows a two-high shell, hot route the slot crosser into a deeper in-cut to work behind linebackers who may sink into shallow zones.
Pair this play with PA FB Flat or Inside Cross in your play-calling sequence so the defense has to respect both the flare action and a similar-looking play-action concept, creating hesitation on flow-based reads.
Against aggressive blitz packages, quick-trigger the FB flare since it acts almost like a built-in screen valve that neutralizes overloaded pass rush pressure.