Oklahoma moves into the top four of SI.com's college football power rankings after week 13.

By Colin Becht
December 01, 2015

The 2015 regular season is in the books, so let’s take a quick look back before championship Saturday settles the College Football Playoff picture.

Only four teams held the No. 1 spot this season. Ohio State started with it before Michigan State took over. Utah claimed the top ranking after Week 4, but the Utes’ Week 8 loss to USC allowed Clemson to move up. The Tigers have held it ever since.

Among teams in the current top four, Iowa began the season unranked and didn’t enter the top 25 until after Week 5. Oklahoma dropped to No. 20 after its loss to Texas before climbing back into the playoff field. When Alabama fell to Ole Miss and followed that up with a shaky offensive performance against Louisiana-Monroe, the Crimson Tide sunk to No. 14. And Clemson bottomed at No. 13 before its victory over Notre Dame shot it back up.

A lot changes over the course of 13 weeks, as the path of each of the top four teams illustrates. That’s what makes this fun.

1Clemson Tigers
last week: 1
record: 12–0

Last week: Beat South Carolina 37-32
Next week: Saturday vs. North Carolina

2Alabama Crimson Tide
last week: 2
record: 11–1

Last week: Beat Auburn 29-13
Next week: Saturday vs. Florida

3Oklahoma Sooners
last week: 6
record: 11–1

Last week: Beat Oklahoma State 58-23
Next week: No game

4Iowa Hawkeyes
last week: 3
record: 12–0

Last week: Beat Nebraska 28-20
Next week: Saturday vs. Michigan State

5Michigan State Spartans
last week: 4
record: 11–1
6Ohio State Buckeyes
last week: 9
record: 11–1

Last week: Beat Michigan 42-13
Next week: No game

7Stanford Cardinal
last week: 13
record: 10–2

Last week: Beat Notre Dame 38-36
Next week: Saturday vs. USC

8Notre Dame Fighting Irish
last week: 5
record: 10–2

Last week: Lost to Stanford 38-36
Next week: No game

9TCU Horned Frogs
last week: 16
record: 10–2

Last week: Beat Baylor 28-21 in 2OT
Next week: No game

10Baylor Bears
last week: 7
record: 10–2
11North Carolina Tar Heels
last week: 12
record: 11–1

Last week: Beat North Carolina State 45-34
Next week: Saturday vs. Clemson

12Oklahoma State Cowboys
last week: 8
record: 10–2

Last week: Lost to Oklahoma 58-23
Next week: No game

13Northwestern Wildcats
last week: 14
record: 10–2

Last week: Beat Illinois 24-14
Next week: No game

14Florida State Seminoles
last week: 17
record: 10–2

Last week: Beat Florida 27-2
Next week: No game

15Florida Gators
last week: 10
record: 10–2
16Ole Miss Rebels
last week: 19
record: 9–3

Last week: Beat Mississippi State 38-27
Next week: No game

17Oregon Ducks
last week: 18
record: 9–3

Last week: Beat Oregon State 52-42
Next week: No game

18Houston Cougars
last week: 21
record: 11–1

Last week: Beat Navy 52-31
Next week: Saturday vs. Temple

19Michigan Wolverines
last week: 11
record: 9–3

Last week: Lost to Ohio State 42-13
Next week: No game

20Temple Owls
last week: 22
record: 10–2
21Navy Midshipmen
last week: 15
record: 9–2

Last week: Lost to Houston 52-31
Next week: No game

22LSU Tigers
last week: 23
record: 8–3

Last week: Beat Texas A&M 19-7
Next week: No game

23Utah Utes
last week: NR
record: 9–3

Last week: Beat Colorado 20-14
Next week: No game

24Wisconsin Badgers
last week: NR
record: 9–3

Last week: Beat Minnesota 31-21
Next week: No game

25Memphis Tigers
last week: NR
record: 9–3

Last week: Beat SMU 63-0
Next week: No game

Dropped out: Toledo, Washington State, UCLA
Next five: USC, Georgia, Toledo, Western Kentucky, UCLA

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