The Trojans and the Bears played a five-set match at the Galen Center for the seventh time in nine years.
California won its first match at Galen Center in nine tries.
Cal snapped a seven-match losing streak to the Trojans and won a road match against USC for the first time since 2004.
With the loss, the Trojans finish the home schedule with a 4-8 (.333) record this season. It is the most home losses ever suffered at the Galen Center and included first-time wins at the arena by four new opponents (Texas A&M, Florida, Arizona State, California).
Junior OH Samantha Bricio recorded three service aces to give her 72 this season, and 200 in her career. She became the Pac-12 career record holder and the first-ever player to record 200 career aces as she passed a nearly three-decade old record of 198 set by UCLA's Daiva Tomkus (1986-89). It was also the 27th time in her career that she has had at least three aces in a single match.
Bricio finished with 23 kills and 11 digs for her 13th double-double this season (35th of her career).
Sophomore OH Ebony Nwanebu posted a career-high three service aces.
Sophomore libero Taylor Whittingham had her 21st match in double digits for digs and finished with 25. It was her ninth match with 20 digs or more this year.