Big West Player of the Year Lamine Diane has 22 points, 17 rebounds and five blocked shots for the seventh-seeded Matadors, but the second-seeded Gauchos rally in the final minutes for a 71-68 victory.
Tahlia Garza's layup with 2.2 seconds left gives the Anteaters a 59-57 victory over the defending tourney champion Matadors and their first semi berth since 2014. Fifth-seeded UCI faces top seed UC Davis on Friday at noon.
All five starters score in double figures and the third-seeded Highlanders dominate the boards on their way to a 67-50 victory over the seventh-seeded 49ers at UCI. UCR meets No. 2 seed Hawaii on Friday at 2:30 p.m. at Honda Center.