The Fremeau Efficiency Index (FEI) rating is a college football rating system based on opponent-adjusted drive efficiency, which filters out garbage time and, in this case, projects the likelihood a team will go undefeated.
Among the 20 undefeated FBS squads, the FEI gives Oklahoma State the twelfth best chance to go undefeated this season – a 3.8% likelihood.
From ESPN:
The Cowboys have not yet proved to our ratings that they are capable of truly contending for the Big 12 championship against Baylor, TCU, and Oklahoma. But they do draw each of those teams to Stillwater next month, and the home-field advantage might ultimately give them the edge they need.