ESPN's men's basketball Power Rankings saw a major shakeup after Michigan and Iowa State suffered surprising losses. The Wolverines fell only one spot to No. 3 despite a stunning home defeat to Wisconsin, while the Cyclones dropped from No. 2 to No. 5 after a 21-point blowout loss at Kansas.

Both teams had been consistent at the top, but their stumbles opened the door for others. Duke moved up to No. 4, leveraging its strong résumé and elite metrics. Nebraska remained undefeated but sits at No. 7, caught in a tough debate between efficiency and impressive wins.

The rankings reflect a crowded field where one loss can trigger a cascade of adjustments. Arizona holds the top spot, while UConn's turnover issues linger. With conference play intensifying, the next few weeks will test which teams can stabilize and which will continue to slide.