After a long battle between the two on Sunday, it would be the Bruins that came out on top, 7-5.
Third-seeded USC begins the NCAA Tournament against Harvard on Thursday night.
The fourth-ranked Trojans earned their second-straight conference championship.
The No. 4 Trojans will enter the conference tournament as the fourth seed in the field.
Despite a disappointing end to the regular season, the Trojans now look forward to the postseason.
The second-ranked Trojans seek a bounce-back win after falling to Cal last weekend.
The top-ranked Trojans were unable to beat second-ranked Cal in a matchup in Berkeley.
The two teams will meet Saturday for the first time since the 2016 NCAA final.
USC routed the Spartans as the team prepares for the final stretch of the season.
USC heads to Irvine, California, first to play Concordia before facing San Jose State at home.