Oklahoma State scored two runs in the bottom of the ninth inning to defeat Oregon, 5-4, Saturday at the OSU/Tulsa Invitational in Stillwater.
Chelsea Alexander's RBI single was the game-winner after Sydney Pennington tied the game 4-4 with an RBI single earlier in the frame.
Earlier Saturday, the Cowgirls (11-5) defeated Louisville 2-1 in eight innings.