At the start of the 2015 season, the Ohio State Buckeyes made history by becoming the first team to be the unanimous number one in the AP Top 25, receiving all 61 first-place votes.
After an unimpressive 34-27 win against Indiana, moving them to 5-0, the Buckeyes are still atop the rankings, but confidence in them as the best team in the country is now wavering, having received 38 first-place votes this week.
Let's see how the top 25 breaks down heading into week six.
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2. TCU (5 first-place votes, 5-0)
TCU jumped two spots this week after a vicious 50-7 beating of in-state rival Texas.
3. Baylor (10 first-place votes, 4-0)
In another all-Texas game, Baylor defeated Texas Tech 63-35 to move up from number five.
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4. Michigan State (5-0)
Ranked second last week, the Spartans were leapfrogged this week after their own unimpressive Big 10 win, a 24-21 victory over Purdue.
5. Utah (7 first-place votes, 4-0)
The Utes jumped five spots and received seven first-place votes...and they didn't even play a game.
6. Clemson (4-0)
We knew Clemson was good, but they've put themselves in the early playoff talks with a 24-22 win over the team that held this spot last week, Notre Dame.
7. LSU (4-0)
LSU jumps from ninth to seventh after defeating Eastern Michigan 44-22.
8. Alabama (4-1)
Look who's back in the top ten. The Crimson Tide let the rest of the college football world know that they're not going away after beating up on Georgia, 38-10.
9. Texas A&M (1 first-place vote, 5-0)
After beating Mississippi State 30-17, the Aggies moved into the top ten and claimed a first-place vote.
10. Oklahoma (4-0)
Rounding out the top ten are the Oklahoma Sooners, who spent their Saturday whipping West Virginia, 44-24.
11. Florida (5-0)
In the biggest jump of the week, the Florida Gators jumped 14 spots after a very impressive 38-10 drubbing of Ole Miss.
12. Florida State (4-0)
Florida State got a 24-16 victory over Wake Forest, but moved down one spot from last week.
13. Northwestern (5-0)
Northwestern continues to impress after a 27-0 shutout of Minnesota.
14. Ole Miss (4-1)
Ranked third last week, the Rebels dropped eleven spots after that big loss to Florida.
15. Notre Dame (4-1)
Speaking of dropping spots after a loss, the Irish fell nine spots this week after losing to Clemson.
16. Stanford (4-1)
Stanford moved up two spots following a 55-17 win over the Arizona Wildcats.
17. USC (3-1)
USC holds at 17 following a week off.
18. Michigan (4-1)
With their second straight shutout, this one a 28-0 win over Maryland, the Wolverines moved up four spots to number 18.
19. Georgia (4-1)
After the big 38-10 loss to Alabama, the Bulldogs slipped 11 spots.
20. UCLA (4-1)
Falling out of the top ten and nearly the top 20, the Bruins fell thirteen spots after losing to Arizona State 38-23.
21. Oklahoma State (5-0)
Oklahoma State fought hard to beat Kansas State, 36-34, and dropped a spot for their trouble.
22. Iowa (5-0)
After a gritty 10-6 win over Wisconsin, the Hawkeyes enter the top 25 for the first time this year.
23. California (5-0)
The Bears moved up a spot after a 34-28 defeat of Washington State.
24. Toledo (4-0)
Toledo not only beat Ball State 24-10 this weekend, but were also rewarded with the number 24 spot.
25. Boise State (4-1)
Welcome back to the Broncos, who rejoin the top 25 after a lopsided 55-0 win against Hawaii.