I'm not bragging, yes I am, but a 1 loss Oklahoma winning the big 12 and advancing to the CFP was my preseason prediction. Also the only impediment to a 1 loss Oklahoma getting in is this exact combo:
1 loss SEC Champ
Undefeated Big 10 champ
Undefeated Clemson
1 loss Stanford that the committee refuses to put OU behind even though OU would have more quality wins against.
Undefeated OSU

or Baylor gets a top 2 seed.