Plenty of change to the rankings was expected coming into this week, but no one could have predicted this. One of the craziest weeks of college football in recent memory sent the Power Rankings into complete upheaval, as only one team remains in the same spot as last week.

A total shakeup was clearly in the cards after five of the top eight and 11 of the top 19 teams in the AP poll lost in what was truly a remarkable week. Four new arrivals made their way into the Power Rankings, with TCU and Arizona both debuting in the top 15.

LSU, USC, Wisconsin, and BYU disappeared from the rankings after less than impressive performances in Week 6, while Oregon, UCLA, and Stanford took the biggest falls. Their losses meant big gains for Mississippi State and East Carolina, as the Bulldogs and Pirates moved up 10 and seven spots respectively.

How the results are calculated: Five editors submit their own rankings, and, like the AP poll, every first-place vote is worth 25 points, second-place votes worth 24, and so on. Voting is not based simply on performance, but other external factors, such as injuries to key players and strength of schedule. theScore's ranking is listed first, with last week's ranking in brackets. Unless otherwise indicated, all rankings are theScore's, as voted on by our staff.

Without further ado, here are the only rankings you should care about:

1. AUBURN (5)

The Tigers' dominant win over LSU was enough for them to leapfrog Florida State and take over the No. 1 spot, as the rest of the teams occupying the top of the rankings crumbled under the pressure this past week.

NEXT GAME: at Mississippi State, Saturday at 3:30 p.m. ET

2. MISSISSIPPI STATE (12)

What a ride it's been for the Bulldogs. While they've won two straight against high-quality opponents, it's not time to celebrate yet, not with a date with No. 1 Auburn just around the corner.

NEXT GAME: vs. Auburn, Saturday at 3:30 p.m. ET

DAK PRESCOTT FOR HEISMAN

If you didn't know Dak Prescott a month ago, you do now. The Mississippi State quarterback has engineered wins over LSU and Texas A&M in consecutive games, giving the Bulldogs their highest ranking in school history on the AP poll this week at No. 3. Prescott has passed for 1,232 yards, rushed for 455 yards, scored 20 total touchdowns (13 passing, six rushing, one receiving) while throwing just two interceptions. No team in the nation owns a pair of wins as impressive as Mississippi State, and if Prescott can carry the Bulldogs in another huge matchup with Auburn on Saturday, the Heisman Trophy will be his to lose. - Mike Dickson

3. FLORIDA STATE (3)

While the rankings imploded around them, the Seminoles stayed put. Florida State finally put up a big win against Wake Forest, but the Seminoles will need a few more of those to be a truly convincing contender.

NEXT GAME: at Syracuse, Saturday at 12 p.m. ET

4. OLE MISS (T9)

A victory over Alabama would be huge for any program, but especially so for an Ole Miss team that had lost 10 straight against the Crimson Tide. The Rebels are 5-0 for the first time since 1962, which has everyone partying in Oxford.

NEXT GAME: at Texas A&M, Saturday at 9 p.m. ET

5. BAYLOR (T6)

Baylor's offense looked downright pedestrian against Texas, with Bryce Petty uncharacteristically going 7-of-22 for 111 yards and two touchdowns. However, a win against TCU would make that performance easy to forget.

NEXT GAME: vs. TCU, Saturday at 3:30 p.m. ET

6. NOTRE DAME (8)

The Irish haven't allowed more than 17 points in five wins this year and they look like a legit top-10 team. Should Notre Dame continue to fire on offense, North Carolina, ranked 125th in points for, will have its soft defense exposed.

NEXT GAME: vs. North Carolina, Saturday at 3:30 p.m. ET

7. ALABAMA (3)

Alabama may have lost Saturday, but don't rule them out just yet. It all starts with Arkansas on Saturday, and 'Bama must win to stay relevant. It's schedule doesn't get any easier after the Razorbacks, either.

NEXT GAME: at Arkansas, Saturday at 6 p.m. ET

8. MICHIGAN STATE (11)

The Spartans' problems don't revolve around winning, but rather keeping students interested in the games. Purdue will hardly be a challenge for Michigan State's mean run defense (72 yards per game).

NEXT GAME: at Purdue, Saturday at 3:30 p.m. ET

MICHIGAN STATE STILL HAS A GREAT SHOT AT THE COLLEGE FOOTBALL PLAYOFF

Now that Oregon lost its first game of the season - an upset to No. 14 Arizona - Michigan State's chance to make the College Football Playoff is much sunnier. That's still despite a sloppy second half against a resurgent No. 20 Nebraska squad during Saturday night's 27-22 victory. The only problem heading into Week 6 is that six teams still haven't lost, but surely that number will dwindle down to one or two by season's end. As long as the Spartans win out the remaning seven games of their schedule - including a massive Big Ten matchup against No. 15 Ohio State in early November - they could claim one of the four golden tickets. But as we learned this past weekend, easier said than done. - Joseph Czikk

9. GEORGIA (13)

Georgia is a puzzling team, most notably because it didn't look good in tight games against South Carolina and Tennessee. If No. 22 Missouri can find a way to contain Todd Gurley, it could upset the Bulldogs with its above-average offense.

NEXT GAME: at Missouri, Saturday at 12 p.m. ET

10. OKLAHOMA (4)

Had it not been for a pesky No. 11 TCU squad, Oklahoma could have been in the top two this week. But the Sooners were upset in Fort Worth and now must beat Texas to remain in the playoff picture.

NEXT GAME: vs. Texas, Saturday at 12 p.m. ET

11. TCU (N/A)

The Horned Frogs were the recipients of some generous AP ranking algorithms Sunday. Still, the team hasn't lost yet. But they take on No. 5 Baylor Saturday, and will be hard-pressed to stage another wild upset.

NEXT GAME: at Baylor, Saturday at 3:30 p.m. ET

12. OREGON (1)

Another of the top-10 giants to fall in Week 5, Oregon now faces No. 19 UCLA, who were also upset over the weekend. Oregon should have the edge, making this a must-watch game.

NEXT GAME: at UCLA, Saturday at 3:30 p.m. ET

13. TEXAS A&M (T6)

Mississippi State made quick work of a high-powered Texas A&M squad Saturday. The Aggies are in tough: four of its next six games are against ranked opponents. Saturday's clash with No. 4 Ole Miss will be telling.

NEXT GAME: vs. Ole Miss, Saturday at 9 p.m. ET

14. ARIZONA (N/A)

The Rich Rodriguez-led spread offense with smallish running backs worked well against Oregon, but USC has a solid defensive line, as well as a decent rush attack. This will be a classic offense versus defense contest.

NEXT GAME: vs. USC, Saturday at 10:30 p.m. ET

ARIZONA DOESN'T BELONG IN THE TOP 25

Arizona caught Oregon off guard a week ago, and while it deserves a ton of credit for going into Eugene swinging, moving them up to No. 10 in the AP Poll is a drastic overreaction. The Wildcats entered that game coming off three consecutive single-digit victories over lesser competition, needing their Hail Mary prayer answered just to survive against Cal. The team has done a good job of moving the ball both on the ground and through the air, but if it can't build up a margin against the likes of Nevada and Texas-San Antonio, what can we really expect from Arizona as it enters the tough part of its schedule. - Gino Bottero

15. OHIO STATE (19)

Earth to everyone: Ohio State is very good without Braxton Miller. The Buckeyes lead the Big Ten in total offense and are third in total defense. Rutgers, despite a big win over Michigan on Saturday, will be tested against a rock-solid Ohio State defense.

NEXT GAME: vs. Rutgers, Saturday, Oct. 18 at 3:30 p.m. ET

16. EAST CAROLINA (23)

Led by standout quarterback Shane Carden, the Pirates find themselves nationally ranked for the first time in six years. With the remainder of their schedule void of ranked opponents, the Pirates need to turn in commanding performances to continue to jump in the polls.

NEXT GAME: at South Florida, Saturday at 7 p.m. ET

17. OKLAHOMA STATE (22)

Ever since narrowly losing to Florida State in Week 1, the Cowboys have been a force, rolling four straight wins. Before they face TCU in a major Week 8 conference match up, they have to make work of the Kansas Jayhawks on the road.

NEXT GAME: at Kansas, Saturday at 4 p.m. ET

DON'T SLEEP ON OKLAHOMA STATE

Oklahoma State head coach Mike Gundy is no stranger to making bold statements and his work this season has been too loud to ignore. After a near-win versus defending national champions Florida State in Week 1, the Cowboys have taken care of whatever has been placed in front of them. They have produced with virtually a different squad than the 2013 unit that finished 10-3. With each win, new starting quarterback Daxx Garman in cohesion with receivers Brandon Sheperd and Marcell Ateman have created consistency, chemistry, and experience. On the other side of the ball, sophomore linebacker Seth Jacobs has been a do-it-all weapon. His two interceptions, three pass breakups, and seven tackles per game show that his future is bright. As the year progresses, this team can be special in a Big 12 conference that is still looking for its best team. - Isaac Owusu

18. KANSAS STATE (24)

Wildcats quarterback Jake Waters should find himself on more and more Heisman ballots as the season progresses. The dual-threat passer fits the Bill Snyder mold. The team can expect a huge jump on all other ballots with a win at No. 10 Oklahoma.

NEXT GAME: at Oklahoma, Saturday, Oct. 18 at 12 p.m. ET

19. UCLA (T9)

The Bruins blew their opportunity to avoid a home upset by missing a late field goal. Luckily for them nearly every other good team in the Pac-12 fell on the weekend. They need to beat a motivated Oregon squad to avoid fully falling off this list.

NEXT GAME: vs. Oregon, Saturday at 3:30 p.m. ET

20. NEBRASKA (18)

It was only a matter of time before the Cornhuskers faced a real test. After staying competitive in their 27-22 loss to Michigan State, Nebraska doesn't take a major bump in the rankings, but the team needs a big win over the surging Wildcats if they want to back up their quarterback's statements.

NEXT GAME: at Northwestern, Saturday, Oct. 18 at 7:30 p.m. ET

21. ARIZONA STATE (25)

The Sun Devils redeemed themselves from embarrassment by claiming a last-second victory over the Trojans. They face their third ranked opponent in as many games in hosting Stanford. With all the shakiness in the Pac-12, this could be the win that separates them from the pack.

NEXT GAME: vs. Stanford, Saturday, Oct. 18 at 10:30 p.m. ET

THE PAC-12 HAD BETTER WATCH OUT FOR ARIZONA STATE

It was difficult to stand out on upset Saturday, but the Sun Devils did it with the help of a "Jael Mary". In the course of seven weeks, Arizona State has an opportunity, squaring off against some serious muscle in the form of four ranked teams. But ASU is for real and is so without starting quarterback Taylor Kelly. No one has proven that running back D.J. Foster can be stopped, rushing for 553 yards and five touchdowns. Mix in his 280 receiving yards and two scores and you've got yourself one of the nation's top catalysts. Jaelen Strong is also a force, accumulating 614 receiving yards and five TDs, giving anyone in the pocket several options. All in all, Oregon, UCLA, USC, and Stanford all fell victim to the trap weekend and if the Sun Devils can string together some impressive victories, and see the return of their starting pivot, don't be surprised if the Ducks are bumped as the shoe-in squad out of the west coast.

- George Halim

22. MISSOURI (T20)

Following their upset win over the Gamecocks, the Tigers can do it again against the Bulldogs. Their biggest challenge will be to contain running back Todd Gurley. It's easier said than done, but if Hutson Mason is forced to win the game on his own, Missouri has a fighting chance.

NEXT GAME: vs. Georgia, Saturday 12 p.m. ET

23. GEORGIA TECH (N/A)

The Yellow Jackets make the list simply because they're undefeated. Looking at the team's schedule, it's hard to tell if they will see a defeat in the coming weeks, and it's even harder to tell if they are for real. However, wins are wins and you can't hold them against a team.

NEXT GAME: vs. Duke, Saturday at 12:30 p.m. ET

24. UTAH (N/A)

Another Pac-12 team in the mix due to the mayhem occurring in the conference. The Utes were a field goal away from not being mentioned on the list, but currently sit in position to move up with a victory over the Beavers.

NEXT GAME: at Oregon State, Thursday, Oct. 16 at 10 p.m. ET

25. STANFORD (14)

A late Everett Golson touchdown did more than cost the Cardinal in Saturday's game against Notre Dame; they also 15 spots in the power rankings. Even with two losses to their name, they can possibly gain back some of the ground they lost with a win over the Cougars.

NEXT GAME: vs. Washington State, Friday at 9 p.m. ET

theScore's NCAAF power rankings will be released every Monday during the regular college season. This week's edition was voted on by Mike Dickson, George Halim, Kimberly John, Isaac Owusu, and Sean Tepper. The full vote count is paired with the rankings below.

Rank Team Points AP poll 1 Auburn 123 2 2 Mississippi State 118 T3 3 Florida State 113 1 4 Ole Miss 112 T3 5 Baylor 105 5 6 Notre Dame 98 6 7 Alabama 96 7 8 Michigan State 91 8 9 Georgia 78 13 10 Oklahoma 76 11 11 TCU 74 9 12 Oregon 72 12 13 Texas A&M 65 14 14 Arizona 64 10 15 Ohio State 58 15 16 East Carolina 47 19 17 Oklahoma State 46 16 18 Kansas State 41 17 19 UCLA 33 18 20 Nebraska 31 21 21 Arizona State 28 20 22 Missouri 19 23 23 Georgia Tech 17 22 24 Utah 10 24 25 Stanford 5 25

Other teams receiving votes: LSU (4), Clemson (1)