Jawun Evans scored 27 points, dished out eight assists while Oklahoma State never trailed in an 89-76 victory over TCU on Monday night.
Jeffrey Carroll recorded his fifth career double-double with 19 points and 10 rebounds for the Cowboys who won their second straight contest after dropping six in a row.
Davon Dillard scored a career-high 10 points, including two explosive second-half dunks.
OSU has now won back-to-back Big 12 games for the first time since February of 2015.
“I thought it was a very good TCU team and I thought they were really the aggressors in the first half, as evident by the rebound difference,” said OSU coach Brad Underwood.