Disguise
What it is
Showing one coverage picture before the snap and playing a different one after it.
Why it matters
Every pre-snap read a quarterback makes is a read of alignment, which means alignment is the cheapest lie a defense can tell. A two-high shell that rotates to single high after the snap turns a post read into an interception; a corner showing press who bails turns a slant into a throw at a defender's chest. The discipline is timing — a disguise that declares early is just a slower version of the coverage it was hiding, and one that declares late costs the defenders leverage they needed. Coaches grade it by asking whether the picture at the snap and the picture at the throw are different.
Also called
Programs call this disguise, shell, rotate, show and go or late rotation. The Coach answers to any of them.
See it on the field
A two-high picture with a single-high call underneath it. The alignment comes from the engine’s own front resolver against real offensive splits, so it is a picture the simulator genuinely produces — not a diagram drawn to make a point.
Disguise — the shell shown is not the coverage playedRelated
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