... on Autzen Stadium in Eugene, Oregon, where the Ducks and the Stanford Cardinal were set to do battle for not only the top of the conference, but also for the right to move up in the national rankings.

Stanford led at the half, but Oregon was done playing games and closed with 28 unanswered points to not only knock off the Cardinals, but also move the Ducks one spot ahead of Boise State in the national rankings, moving from the fourth spot up to third.

While there's a change at the top of the Pac-10 conference, there were also some shifts in the middle of the pack as well.

Here are the updated Pac-10 power rankings after college football's fifth week, heading into Week 6.

Bleacher Report - College Football