http://espn.go.com/college-football...oregon-state-beavers-indefinitely-knee-injuryOregon State sophomore quarterback Sean Mannion is out indefinitely after suffering a knee injury against Washington State, Beavers coach Mike Riley told reporters Monday.
Mannion played the entire game against the Cougars but didn't play well, throwing three of his four interceptions of the season in a 19-6 win for the 10th-ranked Beavers.
"It's very, very disappointing for the young man. He's invested a ton and he's going to miss some time," Riley said. "Like I told him, 'You're going to be fine. I read about a guy who hurt his knee in the first game of a the season a few years ago and he's still pretty good -- Tom Brady. The football stuff happens, you've just got to live with it and get better from it.'
"He'll be back and he'll be fine."
Mannion had an MRI on Sunday, but no details were provided about the nature of his injury. Riley did indicate that Mannion will require surgery, but added no further details on the timing of the surgery or recovery.
"I'm going to let the doctors talk about that, or Sean, when he's ready for that," Riley said.
Junior Cody Vaz will replace Mannion against BYU this weekend.