The Big 12 witnessed one major change outside of this week's power rankings . Stillwater, Oklahoma is the site of the latest major coaching change, as Mike Gundy is out after a two-decade run . We'll see if Gundy's dismissal impacts this week's rankings — which features TCU and Arizona moving up big.

1. Iowa State (-)

The Cyclones stay at the top following a week off. Now Matt Campbell and company welcome a surging and unbeaten Arizona team on Saturday.

2. Texas Tech (-)

The Red Raiders smacked Utah Saturday to prove they're a force in the conference. Even Joel Klatt hails Texas Tech as the best in the Big 12 .

3. BYU (-)

Bear Bachmeier and LJ Martin are a formidable rushing duo at quarterback and running back, respectively. Now the undefeated Cougars must withstand a loud Fo

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