KANSAS CITY, Mo. (AP) _ Jamar Samuels scored 21 of his career-high 27 points in the first half, helping No. 9 Kansas State turn a rematch into a rout with an 83-64 win over Oklahoma State Thursday night in the quarterfinals of the Big 12 tournament.

Kansas State (25-6) had been waiting to play Oklahoma State again since a home loss in January. The Wildcats opened the game with a big run and closed the first half with an even bigger one, leaving no doubt while tying a school single-season record for wins.

Denis Clemente had 12 points and 10 assists, Jacob Pullen added 19 points and Samuels had 10 rebounds to send Kansas State into Friday's semifinals against the Baylor-Texas winner.

Oklahoma State (22-10) shot poorly and defended even worse, following up an impressive win over rival Oklahoma with a clunker.