Knee costs Ohio St.'s Nathan Williams

Ohio State defensive end Nathan Williams likely will miss the rest of the season with a left knee injury, Buckeyes coach Luke Fickell said Tuesday.

Williams, a starter, sustained the injury in Ohio State's season opener against Akron and has not returned.

He underwent arthroscopic surgery Sept. 13. Fickell said Williams likely will need another operation.

Williams has a redshirt year available and would be able to use it to maintain one year of eligibility.

He recorded 89 tackles, including 20½ tackles for a loss, in the past three seasons.

Adam Rittenberg covers Big Ten football for ESPN.com. He can be reached at espnritt@gmail.com.