The Pac-10 kept rolling along with surprises galore this weekend.
Stanford, Oregon, and...UCLA? The Bruins not only went to Austin and beat the Longhorns, but they took advantage of every turnover and every opportunity in an upset win over Texas.
There will be some changes in the power rankings from top to bottom, which leaves a glaring question: Will Stanford jump over Oregon for the top spot in the Pac-10, or did Oregon do enough to hang on for another week?
Speaking of Oregon and Stanford, the two teams stayed unbeaten a week before their showdown, which ESPN's College GameDay will be on hand for.
Here are the Pac-10 power rankings after college football's fourth week.
Last week: No. 10
The Washington State Cougars bring up the rear for the second straight week after a lopsided 50-16 loss to USC on Saturday.
Cougars quarterback Jeff Tuel was intercepted three times, and the Washington State running game never got going, finishing with just 67 total rushing yards.
Next game: at UCLA
Last week: No. 9
The Washington Huskies remain just above their in-state rivals even in a bye week. It should give them a chance to recover from their injuries suffered against Nebraska a week ago.
Next game: at USC
Last week: No. 7
Arizona State met up with the Oregon Ducks and found out just how good that team was, dropping an 11-point, 42-31, decision to the Ducks.
Don't let the score deceive you; the Sun Devils outplayed Oregon for the most part. They ran up 597 yards of total offense against a team that was the nation's leader in total defense.
Unfortunately, they also turned the ball over seven times on Saturday. You're not going to win a lot of games turning the ball over that many times.
Next game: @ Oregon State
Last week: No. 5
The Cal Bears are coming off back-to-back losses on the road against Nevada and Arizona, both of whom are currently ranked in the Top 25.
Quarterback Kevin Riley was held to just 116 yards through the air, but they got 102 yards rushing on 27 carries from running back Shane Vereen.
Next game: Oct. 9 vs UCLA
Last week: No. 8
The UCLA Bruins pulled off the shocker of the entire weekend of college football this past weekend, rolling into Austin and throwing a beating on the Texas Longhorns, 34-12.
The Bruins struggled through their first two weeks of the season, losing against Kansas State and suffering a 35-0 beatdown at the hands of Stanford at the Rose Bowl.
But they've come back nicely and won two straight with a win against Houston and now the upset over Texas. While some may not agree that UCLA deserves to move up from last week, I believe they're better than most think.
Next game: vs. Washington State
Last week: No. 6
When you play two of the top five teams in the country, especially on the road, you're likely to have a tough time winning either game.
For Oregon State, that's the way it's gone so far.
They dropped a 30-21 decision to TCU in the season opener at Cowboys Stadium and then lost a hard-fought game against Boise State, 37-24, this past weekend.
After starting the year ranked in the Top 25, the Beavers find themselves on the outside looking in going into their conference opener on Saturday.
Next game: vs. Arizona State
Last week: No. 3
The Arizona Wildcats slip one spot from last week after a lackluster performance at home against Cal following a more than impressive performance against ninth-ranked Iowa the weekend before.
Arizona could not find the end zone for almost the entire four quarters and finally scored the only touchdown of the game with just over a minute left in the game to give them a 10-9 win over the Bears.
Quarterback Nick Foles threw for 212 yards and a touchdown. He was also intercepted deep in Cal territory and sacked three times.
Next game: Oct. 9 vs. Oregon State
Last week: No. 4
USC moves up one spot from the fourth position after a blowout win on the road against Washington State. Not that it's any big feat, but since Arizona played less than convincingly against Cal, it gave USC the opportunity to move up in the rankings.
Quarterback Matt Barkley threw for 290 yards and three touchdowns and got 164 combined rushing yards from Allen Bradford and Stanley Havili on just 11 carries.
The Trojan defense intercepted and sacked Cougar quarterback Jeff Tuel three times and held the Cougars to just 67 rushing yards.
Next game: vs. Washington
Last week: No. 1
There will be a new No. 1 atop the Pac-10 power rankings, and it won't be the Oregon Ducks.
Despite the Ducks knocking off Arizona State this past weekend, the fact that they had a tough time doing so might say more about Oregon than we had thought in previous weeks.
Oregon's defense had led the nation until Arizona State gained almost 600 yards (597) in total offense on Saturday, and they trailed 24-14 at one point after the Sun Devils went on a 17-0 run in the second quarter.
The only saving grace for the Ducks was forcing seven, count 'em, seven turnovers that eventually cost Arizona State the win.
Next game: vs. Stanford
Last week: No. 2
The Stanford Cardinal take over the No. 1 spot in the Pac-10 rankings this week, having sat behind the Oregon Ducks over the last few weeks.
The two teams will get to state their case against each other when they have their showdown in Eugene, Oregon on Saturday.
Stanford traveled to South Bend, Indiana this past weekend and knocked off Notre Dame 37-14 in a game that was never that close, especially with the lead as big as 34-6 late in the fourth quarter.
The unbeaten Cardinal needed that kind of performance as they get ready for their showdown against Oregon this coming Saturday in Eugene. It's a game they won last year 51-42 in Stanford.
Next game: at Oregon