Our Week 2 Big 12 power rankings:
1. Oklahoma (previous ranking: 1): After a performance for the ages in Columbus, Baker Mayfield is likely the new Heisman front-runner. Not only that, the Sooners appear to have their best defense in years to complement their flag-planting quarterback.
2. Oklahoma State (2): Mason Rudolph had another big week, but depth at linebacker is suddenly a concern heading into Pitt thanks to injuries to Kevin Henry and Kenneth Edison-McGruder and a first-half suspension of Calvin Bundage following his targeting call at South Alabama.