Pac-12 power rankings: The top tier is thinning

USC's recent stumbles have tightened the Pac-12 championship picture.

You’ll see minimal movement in this week’s Pac-12 power rankings, but that will change soon. It’s becoming clear that the league’s five-team top tier might be more of a top four, and a certain game in Salt Lake City this weekend could thin the herd further.

Washington is the league’s lone unbeaten, with four others right behind with one loss. The Huskies face three of them over the next five weeks, beginning with their Nov. 4 trip to USC … which is reeling after consecutive losses to Notre Dame and Utah … which remains a legitimate Pac-12 title threat, QB1 or no QB1.

Let’s get to the rankings.

(These rankings are intended as a snapshot of the conference at this specific point in time, and not a predicted order of finish. Previous week’s rank in parentheses.)