Starting with the (thankfully renamed) Red River Rivalry, an undefeated Big 12 team is guaranteed to go down as No. With 22 of 133 FBS teams still undefeated through five weeks, expected attrition is to come sooner than later - and this week may serve as a perfect opportunity to see that play out. College football fans may have noticed there has been a relative lack of separation between contenders and pretenders as we approach the midway point of the 2023 season.