Kylie King had her school-record 16th double of the season in the first game. She hit a solo home run in the first inning for a 1-0 lead.
SGU tied the score in the bottom of the first and took a 2-1 lead in the second on an RBI singles by Brown and Nall, respectively.
The Lady Bison took a 4-2 lead with three runs in the fourth on an RBI double by Sonya Beach and steals of home by Abbey Basler and Alyssa Henkes.
Elissa Garbiso stole home in the fifth and OBU tacked on four more in the sixth on RBI singles by Kaley Dickerson and Alison Tunnell and a two-run double by Basler.
The Lady Bison had 11 hits in the game, including three each by King and Ashley Clifton and two by Basler.
Cassiti Henderson went the distance for OBU, striking out six and improving to 7-10.
Sonya Beach (13-8) threw a complete-game, four-hit shutout in the nightcap.
The Lady Bison scored seven times in the third inning with a two-run double by Kaley Dickerson, an RBI single by Beach, an RBI walk issued to Alyssa Henkes, and a three-run error.
OBU added three more in the top of the seventh on a two-run double by Candace Holden and a run-scoring error.
OBU had 10 hits in the game, including two each by Holden, Clifton, Dickerson and Beach.
Now 25-25 overall, the Lady Bison host USAO Friday at 2 p.m. OBU has won five straight and must extend that streak to nine to have a chance at the postseason.
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