Karyla Middlebrook scored 19 points, Breanna Lewis added 18 and Kansas State held off No. 16 Oklahoma's late rally for a 79-71 victory on Tuesday night.
Kansas State (20-8, 10-6 Big 12) has 20 wins for the first time since the 2011-12 season, including coach Jeff Mittie's three seasons with the Wildcats. Oklahoma (21-7, 12-4 Big 12) had its five-game win streak snapped.
Kansas State had a 22-12 lead with 1:48 left in the first quarter, and maintained its double-digit advantage until late in the third quarter. The Sooners used a 15-4 run between the third and fourth quarters to pull to 61-60 with 5:14 to play.
Lewis scored five points, Eternati Willock added four of her 10 points, and the Wildcats stretched their lead to 70-62 with 1:51 left. Oklahoma cut the deficit to six but didn't get closer.
Vionise Pierre-Louis scored 21 points to lead the Sooners.