Playbooks

Corner Strike is a mirrored deep concept out of Shotgun Spread Y-Slot that sends both outside receivers vertical while the two inside slot receivers break outside underneath them. On each side, the outside WR stems up and breaks into a corner route toward the sideline, while the inside receiver runs a quick out that crosses underneath, creating a natural pick/rub combo at the numbers. The QB has no visible check down here, so the read progresses from one corner route to the other based on which side the CB and safety vacate, making this a man beater against press or off man coverage where the underneath out occupies the flat defender and clears space for the corner.
Watch for the boundary and field safeties rotating to two high shells, which signals Cover 2 or Cover 4 and forces the QB to squeeze the corner between the CB and safety. If the underneath defenders sink hard on the outs, that opens a throwing lane for the corner route behind them, so key linebacker and nickel depth at the snap. A user controlled deep safety sitting on the corner side is the biggest red flag, since he can undercut the route if the QB stares it down too long. Man coverage with a single high safety is where this play wins most often, since the underneath out occupies the flat defender and the corner has a one on one vertical opportunity. Cover 3 with a hard sinking corner and a rotating safety can shut this down completely, so if you see that shell pre-snap consider checking to a different play in the set instead of forcing the corner throw.
Pre-snap, identify if the defense is showing two deep safeties or a single high shell, since this concept thrives when a safety has to choose between the corner route and a deep third.
Use the underneath out route as a hot route target versus soft zone or Cover 3 if the corner route gets squeezed by an overlapping safety.
This play works best on second and long or third and medium when you need a explosive gain and can live with an incomplete pass if the corner is not open.
Pair Corner Strike with Curls or Digs H Option in your play calling sequence, since those intermediate concepts attack the same alignment but punish teams sitting under the corner route.
Motion is not shown here, so rely on the pre-snap alignment of the CB (press vs off) to decide which side corner to work first, and eliminate the boundary corner if the defense shows two deep safeties over the top of it.