I just read an article on that topic.
"As of Friday afternoon, the battle for second place is between the two Oklahoma schools. Oklahoma is at 5-2, a half-game better than OSU at 4-2.
There is a good chance that the average number of games played by Big 12 teams this year will be the standard nine games. The reason this is important is because to remain in contention to play for the conference championship
a team must have played no fewer than one game less than the league average.
Assuming that the Sooners are able to play their final two games and win both, there is no way Oklahoma State can finish ahead of them because OU owns the tiebreaker over the Cowboys by virtue of the 41-13 win last weekend.
Oklahoma would also have the advantage should Oklahoma State win out, but play one game more or one game less than the Sooners. Again, the head-to-head outcome would have precedence over which team would win the No. 2 seed in the league title game despite the final winning percentage.
The two scenarios that absolutely cannot happen for Oklahoma to make the conference championship and defend its five consecutive Big 12 crowns are this:
- Lose to either Baylor on Dec. 5 or at West Virginia on Dec. 12.
- Not being to play either game because of a COVID outbreak and finish with a 5-2 record while Oklahoma State is able to win out and finish with a 7-2 record.
West Virginia, Texas and Kansas State all sit at 4-3, a half-game back of Oklahoma State and a full game back of the Sooners."
https://stormininnorman.com/2020/11/27/oklahoma-football-must-play-as-important-as-must-win/