AMES, Iowa, Feb. 1 (UPI) -- Georges Niang piled up 27 points and Melvin Ejim supplied a double-double Saturday, igniting 18th-ranked Iowa State over No. 25 Oklahoma 81-75.
Ejim finished with 22 points and 16 rebounds for the Cyclones (16-4, 4-4 Big 12), who claimed a second victory in three games.
Matt Thomas chipped in 13 points and Monte Morris added 12.
The Sooners (17-5, 6-3) had their four-game winning streak snapped despite 30 points from Buddy Hield.
Isaiah Cousins totaled 13 points and 10 rebounds.