IOWA CITY, Iowa (AP) - Mark Weisman generated enough buzz in the spring of 2011 that his new teammates at Iowa started to wonder where the walk-on had come from.

Weisman arrived after just one semester at Air Force, a stint that helped him clarify his academic and athletic goals.

Weisman, now a sophomore, is set to make his first start at tailback on Saturday when the Hawkeyes (2-1) host Central Michigan (1-1) in their final nonconference game of the season.  Starting running back Damon Bullock is doubtful for Saturday's game with a head injury, and freshman Greg Garmon could miss the game with an arm injury.

Weisman was forced into extended carries last week against Northern Iowa after Bullock and Garmon went down. He responded with 113 yards rushing and three touchdowns off the bench as the Hawkeyes got past the Panthers 27-16.

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