Pac-12 Power Rankings: USC Still on Top

The Pac-12 is down to four undefeated teams as Colorado, Cal and Oregon all lost for the first time. The undefeated ranks will thin even further by at least one this week.

With Oregon dropping out of the AP rankings, the Pac-12 has four teams in the top 25.

The marquee matchup for this week, and maybe for the year to date, is Friday night when USC travels to Pullman to take on Washington State. This is where we lose an unbeaten team.

One man's power rankings

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