Our Week 3 Big 12 power rankings:
1. Oklahoma (previous ranking: 1): The Sooners reeled off 42 unanswered points in the final three quarters to cruise to a 56-14 win over Tulane. Baker Mayfield tallied four touchdown passes.
2. Oklahoma State (2): Flat-out dominant. That's how the Cowboys looked in a 59-21 win over Pitt, one in which they led 35-0 and 49-7 at different points in the second quarter.
3. TCU (4): SMU kept things a little more interesting than the Horned Frogs would have preferred, trailing by six points early in the fourth quarter.