Michigan defensive end Craig Roh (88) pressures Air Force quarterback Connor Dietz (11) in the second quarter of an NCAA college football game, Saturday, Sept. 8, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)

Associated Press
Michigan defensive end Craig Roh (88) pressures Air Force quarterback Connor Dietz (11) in the second quarter of an NCAA college football game, Saturday, Sept. 8, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)
Michigan defensive end Craig Roh (88) pressures Air Force quarterback Connor Dietz (11) in the second quarter of an NCAA college football game, Saturday, Sept. 8, 2012, in Ann Arbor, Mich. (AP Photo/Tony Ding)
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