12/21 personnel groupings present a number of stresses to a defense. The obvious threat is run heavy structures using big personnel with a TE/FB creating extra gaps in the run fit. Heavier personnels often induce loaded boxes and 8 man front structures from a defense to handle the run game. Those loaded box defenses can also create single coverage for a star WR. This can lead to offenses using those heavy personnels/sets to attempt to isolate their best WR creating passing opportunities off max pro, play action, quick game, or RPO concepts. These personnel groupings also allow for a variety of 6,7,8 man pass protections. What is the solution in regular down & distance situations? How do we stop the run while controlling the star receiving threat? Here is a solution from the 3-4 spaced defense using quarters and halves coverage principles. Putting a cloud on the star WR can be a really inexpensive solution to mitigate some risk.
The coverage concept combines two coverages: Stuff and Roll. Stuff is a 1/4 1/4 1/2 concept while Roll is a double rotated Cover 2 concept.
The point is an activated OLB as the 4th rusher. The Mike will make a Rome/London call to activate an OLB. We are going to activate the OLB to the side of the star WR.
Vs. 21
Against a pro set if the star WR is to the defensive right the ILB will make a Rome call to set the point. The point OLB becomes part of the charge. The coverage will play Stuff coverage against a formation with the star WR as a single X. Stuff means half tool to the point and a quarter tool away from the point. Structurally this allows the defense to be sound numerically in the box vs. the run while putting a cover 2 concept on the star WR to disrupt passing concepts. Here the quarter Safety must trigger to become the 8th fitter in the box when the TE blocks.
Against a 2x2 ace formation the point will gain be to the star. The coverage is stuff with a half tool to the point and quarter tool away. The quarter safety helps build the 8 man box while the cloud helps deny the star.
Against a 3x1 nub set the coverage is again Roll. The coverage rolls against any single width formation. The coverage denies the star outside or in the slot similarly to the previous twins example. The ILB does have the TE vertical to the strong side in a match so that's a matchup we are always mindful of in this concept.
With the star aligned strong in the formation the coverage Rolls. The Safety shows post alignment rolling at the snap. The point ILB must be ready to match 3 vertical. The VH Safety is again the 8th run fitter then the TE's block in the this concept.