Dec 12, 2008 7:08 AM EST

Cavaliers' center Zydrunas Ilgauskas has a moderately sprained left ankle, and his return date is unknown.

He isn't expected to play in Cleveland's weekend games against the 76ers and Hawks on Friday and Saturday night, respectively.

He sprained his ankle in the fourth quarter in Philadelphia on Wednesday night when he landed on Donyell Marshall's foot after contesting a shot.

Ilgauskas had an MRI on Thursday, and team doctor Richard Parker diagnosed the injury as a moderate sprain.

Via Cleveland Plain Dealer