West Virginia senior Da'Sean Butler was diagnosed Sunday with a torn ACL in his left knee a day after a hard collision in a loss against Duke in the national semifinals.
The Mountaineers announced the injury after the forward underwent an MRI at St. Vincent Sports Performance in Indianapolis.
Sports information director Bryan Messerly said the MRI also revealed a sprain of the medial collateral ligament and two bone bruises.
Butler, West Virginia's leading scorer, drew a foul after driving into Duke's Brian Zoubek under the basket with 8:59 left in the second half of the 78-57 loss.
The senior collapsed to the court and writhed in pain as a trainer tried straighten his leg. Teammate John Flowers stood over him clapping his hands in encouragement.
West Virginia coach Bob Huggins didn't come out at first, but walked over to Butler after a minute or so as his star player lay there in agony.
Huggins barked at an official for a second, arguing that a foul should have been called on Zoubek, then knelt on the court next to his player. He leaned down to put his face nose-to-nose with Butler, cradling his head and stroking his face, trying to get the senior to calm down.
Butler pounded his fist on the court, then was helped up by a teammate and a trainer, unable to put any weight on his leg as it dragged behind him. He was lifted onto a nearby golf cart and rode to locker room facing backward, stone-faced toward the scoreboard as West Virginia's fans chanted "Da'Sean! Da'Sean!"
The senior finishes his career as the third-leading scorer in WVU history with 2,095 points.
Information from The Associated Press was used in this report.