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LAWRENCE, Kan. (AP) — Perry Ellis had 16 points and 12 rebounds and No. 9 Kansas bolted to a big lead in the opening minutes Saturday in a 68-57 victory Saturday over Kansas State.

Ellis had a double-double at halftime, with 13 points and 10 rebounds as the Jayhawks (18-3, 7-1 Big 12) beat their state rival for the 49th time in the last 53 games. Since the inception of the Big 12 Conference in 1996, Kansas is 41-4 against the Wildcats.

Kansas, which held a one-game lead in the Big 12 coming into the game, got 14 points from Wayne Selden and 10 from Frank Mason.

Thomas Gipson had had 19 points and seven rebounds for Kansas State (12-10, 5-4). Kansas State shot 17 percent in the first half.