Bradford down after Texas sack

Posted by ESPN.com's Tim Griffin

DALLAS -- Oklahoma quarterback Sam Bradford has been knocked out of the game after a blitz by Texas cornerback Aaron Williams.

Bradford landed awkwardly on the same shoulder that was sprained earlier this season in a loss against BYU.

The reigning Heisman Trophy winner is receiving treatment along the sidelines from Oklahoma trainers. It's undertermined if he will return to the game, which the Sooners lead, 3-0.

Update: Landry Jones is in the game for the Sooners.