STILLWATER, Okla. (AP) — Cade Cunningham scored 20 points and fellow freshman Rondel Walker chipped in 19 points with three 3-pointers off the bench to help Oklahoma State beat Texas Southern 85-65. Cunningham, the lone freshman selected to the Associated Press preseason All-America team, was 7 of 12 from the field. The Cowboys pulled away for good with an 8-0 run early in the second half that made it 49-32 on Ferron Flavors Jr.’s 3-pointer. Oklahoma State led by no less than 15 from there and had its largest lead at 59-36. Georgetown-transfer Galen Alexander led the Tigers with 22 points on 8-of-18 shooting.