Oklahoma is trying to make it five straight Big 12 titles. Can the Sooners continue their reign with another transfer quarterback? Max Olson from The Athletic joins AP's Ralph Russo to preview the Big 12 and the contenders to unseat Oklahoma. It starts with Texas, but Iowa State could be primed for another step forward under Matt Campbell _ which will lead to even more speculation about Campbell being lured away by another school or the NFL. Veteran coaches Mike Gundy at Oklahoma State and TCU's Gary Patterson are looking for bounce-back seasons from their programs. And four new coaches enter the league, including Les Miles at Kansas.