TCU and Utah gave the Big 12 a shot in the arm in the first full week of college football action. The Horned Frogs spoiled Bill Belichick's debut as North Carolina coach by blasting the Tar Heels in Chapel Hill. The Utes routed UCLA , also on the road.

Both teams move up in this week's edition of the Big 12 football power rankings.

The conference image needed those triumphs after Baylor fell to Auburn , Colorado lost Georgia Tech and Cincinnati lost to Nebraska . This week, six Big 12 teams face power-conference opponents in matchups of Iowa State -Iowa, Arizona State -Mississippi State, Baylor -SMU, Brigham Young-Stanford, Kansas -Missouri and Oklahoma State-Oregon.

On to the power rankings.

1. Arizona State (1-0, 0-0 in the Big 12)

Preseason ranking: 1

This week:

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