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(AP) -- Le'Bryan Nash was determined to avoid another crushing defeat at the buzzer against Iowa State.

Given a chance at redemption, he came up with the big plays Oklahoma State needed on both ends of the court.

Nash hit the winning fadeaway jumper with 4.7 seconds left and blocked Chris Allen's attempt for the tie at the buzzer to lift the Cowboys to a 69-67 victory Tuesday night.

Markel Brown scored 19 points and Nash added 18 as Oklahoma State (12-12, 5-6 Big 12) avenged a 71-68 loss at Iowa State three weeks earlier on Scott Christopherson's banked-in 3-pointer at the buzzer.

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