Abou Ousmane scored 25 points on 7-for-11 shooting, and Oklahoma State held on for a 74-68 win over No. 9 Iowa State in a Big 12 Conference matchup Tuesday night in Stillwater, Okla.Arturo Dean added 14 points for Oklahoma State (14-14, 6-11), which bounced back from a 32-point loss against then-No. 23 Kansas in its previous game three days earlier. Bryce Thompson contributed 11 points and Marchelus Avery chipped in with 10 off the bench.Joshua Jefferson scored 17 points and pulled down eight rebounds to lead Iowa State (21-7, 11-6), which lost its second straight after winning the previous four. Nate Heise scored 13 points on 3-of-4 shooting from 3-point range, while Curtis Jones finished with 11 points.Oklahoma State outscored Iowa State 22-9 in fastbreak points.Midway through the first half, the Cowboys grabbed a 23-12 lead thanks to a 3-pointer from Ousmane. Jones, though, helped Iowa State pull back to within four points with 3:53 remaining in the first half with a made free throw on the heels of a layup from Jefferson.However, Oklahoma State closed the half on a 12-2 run to grab a 14-point advantage.