Alabama, Ohio State, Michigan and Clemson held the top four spots in the College Football Playoff rankings for the second straight week and Washington moved up a spot to fifth this week.

Wisconsin is sixth in the selection committee rankings released Tuesday night. Louisville was the team that took a big drop. The Cardinals fell from fifth to 11th after losing at Houston.

Ohio State and Michigan play Saturday in Columbus, Ohio, and the loser is likely to be out of the playoff race. The Wolverines would move on the Big Ten championship game by beating the Buckeyes. The Buckeyes, though, need help to reach the conference title game.

Unbeaten Alabama meets Auburn on Saturday, but the Crimson Tide has already clinched a spot in the SEC title game.

College Football Playoff Rankings

1. Alabama, 11-0

2. Ohio State,10-1

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3. Michigan,10-1

4. Clemson,10-1

5. Washington,10-1

6. Wisconsin, 9-2

7. Penn State,9-2

8. Oklahoma,9-2

9. Colorado,9-2

10. Oklahoma State,9-2

11. Louisville,9-2

12. USC,8-3

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13. Auburn,8-3

14. Florida State,8-3

15. Florida,8-2

16. Nebraska,9-2

17. Tennessee,8-3

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18. West Virginia,8-2

19. Boise State,10-1

20. Houston, 9-2

21. Western Michigan,11-0

22. Utah,8-3

23. Washington State,8-3

24. Stanford,8-3

25. Navy,8-2

The College Football Playoff Selection Committee will issue weekly rankings each Tuesday, with the final rankings being announced Sunday, Dec. 4 (Noon EST). The playoff semifinals will match the No. 1 seed vs. the No. 4 seed, and No. 2 will face No. 3. The semifinals will be hosted at the Fiesta Bowl and Peach Bowl on Dec. 31, 2016. The championship game will be played on Jan. 9, 2017 at Tampa, Fla.