There was a little upheaval in Week 3 of the 2018 college football season. Some top teams were toppled while others asserted their dominance and showed why the belong at the top of the polls.

The Alabama Crimson Tide keep the No. 1 spot with 58 first-place votes after going into Oxford and drubbing the Ole Miss Rebels, 62-7. Georgia and Clemson keep flip flopped but remain right behind the Tide with comfortable wins as well. Ohio State continued its hot start with a big win over the TCU Horned Frogs, who are now ranked No. 17, at AT&T Stadium. Oklahoma also kept it rolling with its first conference win against Iowa State.

The biggest upset of the weekend was BYU going into Madison and upsetting the Wisconsin Badgers, who dropped to No. 18. The Cougars actually broke into the Top 25 after that win at No. 25. Speaking of upsets, the LSU Tigers went into Auburn as double-digit underdogs and came away with a win. That bumps Ed Orgeron's team up to No. 6 in the poll while Auburn sinks to No. 9. The full Week 4 AP Top 25 Poll can be found below.

Along with BYU, teams making their 2018 AP Top 25 debut are the Texas A&M Aggies at No. 22 and the Boston College Eagles at No. 23. Boise State dropped out of the poll after a loss at Oklahoma State on Saturday. USC and Arizona State also dropped out of the Top 25 with losses over the weekend.

Week 4 AP Tp 25 Poll

1. Alabama (58)

2. Georgia

3. Clemson (3)

4. Ohio State

5. Oklahoma

6. LSU

7. Stanford

8. Notre Dame

9. Auburn

10. Washington

11. Penn State

12. West Virginia

13. Virginia Tech

14. Mississippi State

15. Oklahoma State

16. UCF

17. TCU

18. Wisconsin

19. Michigan

20. Oregon

21. Miami

22. Texas A&M

23. Boston College

24. Michigan State

25. BYU

Others receiving votes: Iowa 64, Boise St. 62, Duke 61, Colorado 49, California 40, Kentucky 38, South Florida 14, Texas 12, NC State 10, Arizona St. 9, Missouri 8, Utah 6, San Diego St. 5, North Texas 4, South Carolina 4, Washington St. 2, Syracuse 2.

How the AP Poll works: The AP Top 25 is determined by a simple points system based on how each voter ranks college football's best teams. A team receives 25 points for each first place vote, 24 for second place and so on through to the 25th team, which receives one point. The rankings are set by listing the teams' point totals from highest to lowest. The mathematical formula is the same as the one used for the AP Pro 32 rankings and the AP Top 25 rankings for men's and women's basketball.