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“Hard Knocks” has promised Bills Mafia and NFL fans an unprecedented look behind the curtain of the inner workings within Buffalo’s summer home at St. John Fisher University. To this point, it’s proven to be a success — no doubt helped by the presence of Allen.

The second episode of Hard Knocks, featuring the Buffalo Bills, aired on Tuesday night, as fans were given another inside look at one of the NFL's top Super Bowl contenders.