There’s a shake-up at the top of the power rankings for the first time this season, while a key matchup among contenders highlights Week 4.

That will leave newcomer Arizona (2-1) and No. 20 Iowa State (2-0) as the only teams that won't play a Big 12 game until the final weekend of September. The Wildcats have an open date this week, along with UCF (3-0, 1-0). The Cyclones are home against Arkansas State.

Preview the Kansas State Wildcats vs. BYU Cougars college football matchup, with score predictions, stats, and game information.