OKLAHOMA CITY -- Jami Lobpries hit the first grand slam yielded by U.S. Olympian Cat Osterman in her career at Texas and Megan Gibson pitched a four-hitter as Texas A&M knocked the top-seeded Longhorns out of the Big 12 softball tournament with a 5-1 win Thursday.
Osterman (32-2), who pitched for the U.S. Olympic team in 2004, gave up a solo home run in the fifth to Ronda Smith and helped load the bases in the sixth with a walk and a one-out throwing error. She then gave up a single to Rocky Spencer before Lobpries' homer.
The runs were the first ones given up by Osterman in her four Big 12 tournaments.
Amber Spaulding went 4-for-4 and drove in five runs to lift Oklahoma to a 10-2 win against Oklahoma State in five innings. Kristin Vesely added two RBIs and Norelle Dickson scored three times as the fifth-seeded Sooners advanced to Friday's semifinals to face either Missouri or Texas A&M.
Kassie Humphreys (15-16) threw a one-hitter to guide No. 6 seed Kansas into the semifinals with a 2-0 win against Missouri. The Jayhawks, who got an RBI double from Serena Settlemier and an RBI single from Val Chapple, will meet either Nebraska or Oklahoma State on Friday.
Nebraska, the tournament's No. 2 seed, bounced back from an opening-round loss to beat third-seeded Baylor 7-1. Ashley DeBuhr (23-7) homered, drove in four runs and pitched a two-hitter to lead the Cornhuskers.
In earlier opening-round games, Mariee Mena and Samantha Ricketts each drove in four runs in Oklahoma's 13-6 win against Texas A&M and Kansas got a home run and five strong innings from Settlemier in a 5-1 upset of Baylor.