Sarah Killion tied the school record with three assists in the game as No. 1 UCLA defeated LMU, 4-1.
Senior Paul Reynolds and sophomore Ryder Roberts led the Bruins with two goals apiece.
UCLA has won three of last four over USC, and was led by Danny McClintick's two goals in the fourth.
No. 2 UCLA defeated UC Santa Barbara 1-0 on a goal from Leo Stolz.
The 22nd-ranked Bruins won all nine sets this weekend in claiming the Fullerton Classic.