Jim Harbaugh and the Michigan Wolverines have been known for defense ever since Don Brown became the defensive coordinator. Last year his vaunted squad was giving up just 13 points per game before running into an Ohio State buzz saw, followed by a motivated Florida team in the bowl game. Brown has been so good that it's hard to ask him to change, but something clearly wasn't working down the stretch last year.

Big Ten Network analysts Gerry DiNardo and Howard Griffith, along with Fox analysts Joel Klatt and Bruce Feldman, each gave their take on what U-M's defense will look like under Brown this fall after losing guys like David Long, Chase Winovich, Devin Bush and Rashan Gary.

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