Michigan starting quarterback Wilton Speight is likely to miss multiple weeks, and the Wolverines will start John O'Korn against Michigan State on Saturday, coach Jim Harbaugh announced Monday.
Speight was injured against Purdue on Sept. 23, but the details of the injury haven't been made public. The Wolverines were on a bye last week, and Harbaugh had previously said if they did have a game that Speight would not have been able to play.
O'Korn took over in the first quarter against Purdue and went 18-for-26 passing for 270 yards with one touchdown and one interception in a 28-10 win after the Wolverines trailed 10-7 at halftime.