The Cowboys, though, opened the second half as hot as they were cold the first half. OSU scored 27 points the opening seven minutes of the second half to cut the deficit to 42-39.
OSU twice attempted and missed 3-pointers that would have tied the game. The Cowboys would never get closer.
Sparked by two Osby baskets and buckets from Tyler Neal and Pledger, the Sooners answered with a 9-0 run to push the lead back to double digits.
OU had four players in double figures. Cameron Clark scored 14 and Sam Grooms added 10. Neal contributed nine.
Nash finished with 10 points but was 3-of-15 from the field. Brian Williams added 11 points.Wednesday's box score: OU 77, Oklahoma State 64