Markel Brown scored 17 points and Phil Forte added 13 to lead No. 24 Oklahoma State to a 69-44 victory over Texas-Arlington on Wednesday night.
Le'Bryan Nash and Marcus Smart both had 10 points and Philip Jurick pulled down 10 rebounds for the Cowboys (9-1).
Reserve Jamel Outler had 14 points and Kevin Butler added 11 for the Mavericks (5-3), who committed 31 turnovers.
Texas-Arlington committed 20 turnovers in the first half, four in the first 4 minutes, and Oklahoma State built a 13-3 advantage on the way to a 36-17 halftime lead.
The visitors did not hit the 20-point mark until Drew Charles' short jumper with 14:20 remaining in the game.
Kirby Gardner's basket put the Cowboys up 46-23 with 10:34 left and the Mavericks got no closer than 16 points the rest of the way.
Forte hit three 3-pointers in the final 6 minutes, the third putting the Cowboys up 26 points with just under 4 minutes left.