MANHATTAN, Kan. (AP) - Wesley Iwundu scored 22 points, and Kansas State upset top-ranked Oklahoma 80-69 on Saturday night to shake up the Big 12 race once again.Freshman reserve Dean Wade had 17 points for the Wildcats (14-9, 3-7), who snapped the Sooners' four-game win streak by holding in check player of the year front-runner Buddy Hield.