6 Oklahoma has done all it can, winning a fifth Big 12 title in a row with another close win over No. “We’ve had a job to do as a team ... and ultimately win the Big 12 championship," he said. 1 LSU in the SEC title game, Oklahoma (12-1, No. It was the 13th Big 12 title overall for the Sooners, who went to the playoff three of the past four seasons. The 36-year-old Riley is 36-5 as head coach, with Big 12 titles in all three seasons since being promoted from offensive coordinator after Bob Stoops suddenly retired in the summer after winning his 10th Big 12 championship.