Mark J. Terrill / Associated Press)
Utah and Stanford appeared to be on a collision course for the Pac-12 championship game, two power programs that had the look of the dominant team in each division.
The eighth-ranked Cardinal took care of their end of the bargain last week by rolling over Washington to maintain a comfortable lead in the Pac-12 North.
Utah could not keep its roll going, losing to unranked Southern California to fall from the ranks of the unbeaten.
The Utes' loss also threw the Pac-12 South into chaos.
With five weeks left until the Pac-12 championship game, five of the six teams in the South still have a shot at winning the division — everyone except 1-3 Colorado.