Welcome to the Week 13 Pac-12 power rankings. You can see last week’s rankings here. If you don’t like where you’re ranked, well, there’s not much more you can do about it this season.

1. Colorado 10-2, 8-1 (No. 1 last week)

The Buffs become the fifth different team in as many years to claim the South Division. And there was nothing fluky about it, as they won their final six games and took down Top 25 teams in back-to-back weeks to close out the season. But can they become the first South team to wrestle the conference belt away from the North?

2. USC 9-3, 7-2 (No. 2 last week)

One of the hottest teams in the country ended the regular season on a scorching eight-game tear. But September losses to Stanford and Utah ultimately cost them a repeat appearance in the Pac-12 title game. Still, confidence should be high moving forward with Sam Darnold commanding the offense and questions about Clay Helton and Co. sufficiently squashed.

3. Washington 11-1, 8-1 (No. 3 last week)

A blowout win … on the road … against a rival … that is ranked in the Top 25 … is a very strong message to the playoff committee. A win over Colorado in the Pac-12 championship game would all but cement a spot in the four-team tournament. If Colorado wins, well, we saw how the committee treated a two-loss conference champ last season.

4. Washington State 8-4, 7-2 (No. 4 last week)

What should be remembered about WSU’s 2016 regular season is the fantastic eight-game winning streak in the middle, when the Cougars tore through the likes of Oregon, Stanford and UCLA. Unfortunately, it’s the bookends -- an opening loss to an FCS team and a blowout loss to their rival -- that are more likely to stand out historically. But Mike Leach and Co. deserve heaps of credit for negotiating plenty of distractions this season and getting the team in a position to contend for the division.

5. Stanford 9-3, 6-3 (No. 5 last week)

Besides the two early blowout losses to the Washington schools, this was a respectable season for the Cardinal, all things considered. Their only other loss was to Colorado, 10-5, and once Christian McCaffrey returned, so did the offense (991 rushing yards, 10 touchdowns in last five games for McCaffrey). Stanford closed the season winning five straight and averaging 46 points over the final three games.

6. Utah 8-4, 5-4 (No. 6 last week)

If the trend holds of a new South team winning every year, the Utes can look forward to a division crown in 2017. But first they’ll have to learn to win in November. Utah is 5-7 in November over the past three seasons.

7. California 5-7, 3-6 (No. 10 last week)

Is there a stranger team in the Pac-12? The Bears cap a defensively disastrous season with their strongest defensive effort of the campaign on Saturday, holding UCLA to just 10 points. Whether the Bears are one of the 5-7 teams that gets to go bowling remains to be seen. But if they do manage to sneak into the postseason, they have to be considered one of the scarier 5-7 teams in the country.

8. Oregon State 4-8, 3-6 (No. 11 last week)

The Beavers end the season with a bunch of momentum on the strength of a two-game winning streak that included a 34-24 Civil War victory. And considering they lost two more games by one possession (Minnesota and Utah), it’s clear that Gary Andersen's tactics are working. Colorado has shown rebuilding the right way can work. And Andersen appears to be doing things the right way.

9. Arizona State 5-7, 2-7 (No. 7 last week)

Without question, injuries played a part in ASU’s six-game losing streak to close out the season. But by Week 13, you are who you are. And the ASU defense was giving up the same sort of big plays in Week 13 as it was giving up in Week 2.

10. UCLA 4-8, 2-7 (No. 9 last week)

The Bruins put all of their chips on Josh Rosen. And when he went down for the season, they were never able to recover offensively. That eventually takes its toll on the defense, and without Rosen, the Bruins stumbled to a 1-5 mark over the second half.

11. Oregon 4-8, 2-7 (No. 8 last week)

The Pac-12 blog doesn’t pretend to know the future. So we won’t be speculating or making declarations of employment. But after watching Ryan Nall run wild on the Ducks in the Civil War, we’re confident in predicting many … many … many tackling drills for Oregon in the spring.

12. Arizona 3-9, 1-8 (No. 12 last week)

There isn’t much that can cleanse the palate of a three-win season. But a blowout win over your rival -- while also denying them a sixth win -- is a pretty good place to start.