When the 13 members of the College Football Playoff selection committee gathered on Monday to determine their fifth ranking of the season, their longest debate centered around No. 5 Utah and No. 6 Oklahoma.
"We spent considerable time on it, more time than anywhere else on the board," selection committee chair Rob Mullens said on Tuesday night. "There was plenty of debate."
It might have been just the beginning.
There are seven undefeated or one-loss Power 5 teams remaining in the FBS, and all seven will be playing for conference titles this weekend. The Pac-12 and Big 12 conference championship games will steer what should be their most difficult discussion this season: Who's No.