Kansas delivered a shocking 82-78 upset victory over No. 1 Arizona on Monday at Phog Allen Fieldhouse as the Wildcats lost for the first time this season. Melvin Council Jr. and Flory Bidunga combined to score 32 of Kansas’ 39 second-half points after it was announced just prior to tipoff that star guard and NBA Draft prospect Darryn Peterson would not play due to flu-like symptoms.

Freshman Bryson Tiller had another strong outing in a big moment and finished with 18 points and eight rebounds for the No. 9 Jayhawks. Tiller had his best game of the season last month against BYU when he scored 21 points, while Peterson missed a majority of the second half due to cramping.

Kansas (19-5, 9-2 Big 12) has won eight consecutive games since losing to West Virginia on the road last month. The Jayhawks are just a game behind Arizona for first place in the Big 12 standings and improved to 57-0 when playing at home on Mondays under coach Bill Self.

With the loss by the Wildcats, Miami (Ohio) is the final undefeated team remaining in the sport. Arizona (23-1, 10-1)  was off to the best start in Big 12 history before Kansas’ victory.