And Petrino, specifically through Wolthausen, was a mastermind at KNOWING what the opposing offense was going to run at you from their formations. I am convinced that neither Cassity nor Krag have this figured out most times. It's WHY Utah can run it down our throats and WHY UK and Syracuse can beat us deep almost as if we didn't have safeties on the field.
It also helps when your defensive coaches get a play formation/unit on the field before the opposing offense is lining up the snap.
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