down the field to score a touchdown. It didn't take that long for the Sooners. Oklahoma running back DeMarco Murray took the ensuing kickoff and returned it 81 yards for the touchdown, and the Sooners shut down the Tulsa offense in the fourth quarter; Tulsa had four drives that combined for negative 12 yards. Oklahoma brought in many of its backups in the fourth including backup quarterback Joey Halzle and fourth-string running back Mossis Madu. While Oklahoma did score three touchdowns in the fourth quarter, they only attempted two passes (both completions). The Sooner offense continued to dominate their opponents. In their first three games, the Sooners averaged 61 points per game, making them the highest scoring team in the nation. Against Tulsa, they managed to maintain that average after scoring 62 points. The Sooners had scored over 50 points in four games, the first time they had accomplished that since 2003, when they scored over 50 points against Fresno State, UCLA, Iowa State, and Texas. The Sooners also ranked third nationally in total offense coming into the game, averaging 565 total yards. Again, the Sooners remained consistent, putting up 553 yards of total offense against Tulsa. However, Tulsa, ranked fourth nationally in total offense after their first two games, did its damage in the air. Of Tulsa's 398 total yards, 354 were passing yards. Oklahoma also suffered its first major injury of the season. Starting defensive end John Williams tore his Achilles tendon and was lost for the rest of the season. He later applied for a medical redshirt in hopes of getting a sixth year of eligibility. This was the second injury for Williams in his career at Oklahoma, the first coming when he tore his anterior cruciate ligament in the first game of the 2005 season. Colorado Oklahoma opened up their Big 12 schedule on the road with Colorado. Head coach Dan Hawkins was in his second year as head coach of the Buffaloes and was looking to improve on the 2–10 record of the last year as well as put an end to OU's five-game winning streak against CU. This was Colorado's Big 12 opener as well as their homecoming. The Buffaloes had lost fourteen consecutive games to ranked opponents, and heading into this one, the Sooners were favored to win by 23 points. Through four games, OU was the highest scoring team in the nation