If y'all wanna have fun simulating nightmare scenarios...https://collegefootballnetwork.com/college-football-playoff-predictor.
Just made one where OSU, aTm, KState, and Clemson run the table for conference champions, and then had:
12-1 Oregon, 11-1 PSU, 11-1 Indiana
12-1 Miami, 11-1 Pitt...