Cover 3 Sky diagram and notes#
Family: Coverage
What it is: Three deep defenders divide the deep field while a safety rotates down into the flat/alley.
When to use it: Base downs when the defense wants an extra box fitter without playing pure man.
Good against: Outside run, deep shots, and offenses that struggle to attack seams.
Bad against: Flood, seams, quick outs, and offenses that can throw into the flats before rotation arrives.
Pairs well with: Pairs with zone blitz and four-man rush.