John O'Korn will start for Michigan against Michigan State on Saturday

(WXYZ) - John O'Korn will start for Michigan against Michigan State on Saturday, Head Coach Jim Harbaugh announced.

According to Harbaugh, Wilton Speight will not be able to compete and will be out for awhile after taking a hit against Purdue in week 3.

"He won't be able to compete this week or for multiple weeks," Harbaugh said during his weekly press conference.

O'Korn replaced Speight during the game against Purdue and went 18-26 for 270 yards, one touchdown and one interception.

The Wolverines host the Spartans Saturday night at 7:30 p.m. on Channel 7.

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