The Bruins bang out a season-high 22 hits in a 19-4 rout of Fresno State, while the Trojans get a stellar start from Caden Aoki in a 13-1 victory over TCU.
Jessica Clements hits a walk-off home run in the bottom of the seventh inning to lift UCLA to victory in its first game at the Women's College World Series.
After the Ducks tie the score on a controversial obstruction call in the top of the seventh, the Bruins' Jessica Clements hammers a two-out, two-run homer for a 4-2 walk-off win.
The ninth-seeded Bruins have the opportunity to redeem themselves Thursday after dropping a three-game series to the 16th-seeded Ducks earlier this season.
UCLA loses to Nebraska, 5-0, in the Big Ten final, while UCI loses to Cal Poly, 6-4, in the Big West title game. The 64-team NCAA tournament field will be revealed Monday at 9 a.m. PT.