NORMAN, Okla. (AP) — Elijah Harkless sank a go-ahead jumper with 35 seconds remaining, scoring 21 points to spark Oklahoma to a 71-69 victory over Kansas State in a Big 12 Conference opener. The basket by Harkless came after Kansas State battled back from an 11-point halftime deficit to tie the score at 65 on Ismael Massoud’s 3-pointer with 63 seconds left. Umoja Gibson added 19 points, going 4 for 4 from the free-throw line in the final 17 seconds. Harkless was 4 of 4 from distance and grabbed seven rebounds for the Sooners (11-2). Mark Smith scored 14 of his career-high 25 points in the second half for the Wildcats (8-4), who trailed 33-22 at intermission.