As much as Oklahoma fans refuse to admit it, Missouri and OU are rivals.
In the loosest sense it’s accurate. In the way anyone you’re in the same conference with is a rival. And sure Mizzou and OU aren’t rivals the way the Tigers and kU are, or the Sooners and Texas Longhorns are. But they are more than just conference mates.
For the longest time this was a no contest rivalry. Mizzou has only beaten Oklahoma 24 times which stands to give the Sooners a 73.6% win rate over the Tigers. Only 8 of those wins have happened since 1946.