Michigan running back Vincent Smith (2) is stopped by Iowa linebacker Quinton Alston (52) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)

Associated Press
Michigan running back Vincent Smith (2) is stopped by Iowa linebacker Quinton Alston (52) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)
Michigan running back Vincent Smith (2) is stopped by Iowa linebacker Quinton Alston (52) during the first quarter of an NCAA college football game at Michigan Stadium in Ann Arbor, Mich., Saturday, Nov. 17, 2012. (AP Photo/Carlos Osorio)
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