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What a week it was in college football: Five AP Top 25 teams lost to unranked opponents, and after No. 6 BYU's defeat to Kansas, the Big 12 appears to be up for grabs after victories by Colorado and Arizona State.
The Buffaloes and Sun Devils have proved football fans wrong this season as Colorado is tied for the top spot in the Big 12 and Arizona State is a game behind. With both teams on a winning streak, what can they credit for their success?