 True-freshman running back Chris Brown also stepped up to the challenge and ran for 84 yards and two touchdowns, both in the fourth quarter; this was the first time in 16 games that a Sooner back did not run for over 100 yards.The only serious injury of the game came when wide receiver Manuel Johnson was knocked unconscious after hitting helmets with Texas Tech defensive back Chris Parker.Johnson was unresponsive on the sidelines for about 35 seconds before he opened his eyes.