Georgia, Alabama, Notre Dame and Clemson held their spots in the top four of the College Football Playoff rankings, and unbeaten Miami moved up three spots to No. 7 before its showdown with the Fighting Irish.
Oklahoma remained fifth and TCU moved up to sixth in the rankings released Tuesday. The Sooners and Horned Frogs play a key Big 12 game on Saturday, with the winner taking sole possession of first place in the conference.
After Iowa’s blowout win over Ohio State, the Hawkeyes moved into the rankings at No. 20. Iowa State, after its first loss in a month, dropped to No. 21.
After Miami, unbeaten Wisconsin was No. 8, the highest-ranked Big Ten team. Washington, the highest-ranked Pac-12 team, is ninth and Auburn is 10th.
Notre Dame visits the Hurricanes on Saturday night, and Georgia is at Auburn.
No. 14 Penn State and No. 15 Ohio State fell out of the top 10 after losses last week.