Michigan injury updates

Posted by ESPN.com's Adam Rittenberg

COLUMBUS, Ohio -- I just got back from the field after watching pregame warmups. It's pretty cold but not too windy.

Michigan sophomore quarterback Nick Sheridan was taking the first snaps, followed by Justin Feagin. Steven Threet did not make the trip because of a shoulder injury. Right tackle Stephen Schilling also will miss the game with a knee injury. Sophomore Perry Dorrestein will start in his place.

Freshman running back Sam McGuffie, the subject of much speculation this week, was on the field, in uniform and looked ready to go.