Kelsey Gellert scored three goals and freshman goalie Sophie Trumbell stopped eight shots, leading San Marcos to a 14-1 Channel League girls water polo victory over Buena on Tuesday.
The Royals improve to 5-0 in Channel League.
Lili Akin and Jamie Stryker each scored two goals for the Royals, who travel to Orange County to play top-ranked Laguna Beach on Friday and No. 4 Corona del Mar on Saturday.