Tricia Zhang and Brynn Brady each won twice Friday and Menlo School earned a pair of girls tennis victories on the first day of the Battle of the Bay.
The Knights (12-3) beat Santa Barbara and Miramonte 5-1 as Sofia Labatt also won a singles match for Menlo and then teamed with Charlotte Yao for a doubles win.
Natalie Westermann and Alex Viret also won a pair of double matches, each playing with a different partner in the two matches.
Westermann teamed with Yao in the first match and partnered with CC Golub in the second match. Viret teamed with Charlotte Makoni and Izzy Klugman.
Menlo School defeated visiting Burlingame 25-10, 25-20, 25-23 in a non-league match Friday night as part of homecoming festivities.
The Knights improve to 21-5 overall, and resume WBAL play Tuesday against Mercy Burlingame.
Senior Sharon Nejad had a team-high 16 kills on .699 hitting. Zoe Gregory distributed 25 assists and had seven digs and two aces.
Fellow senior Simone Adam added nine kills and seven digs. Senior Hanna Hoffman posted nine digs and 18 assists. Senior Hallie MacDonald had also had nine digs and three aces.
Boys water polo
The Sacred Heart boys water polo team won twice Friday to advance into Saturday's semifinal of the S&R Elite 12 Tournament at Harvard-Westlake, where the Gators (11-1) meet JSerra at 11 a.m.
The SHP-JSerra winner advances into the championship against either Harvard-Westlake or Newport at 5:15 p.m. The losers play at 4 p.m. for third place.
SHP opened with a 13-12 victory over Loyola. Gavin West, who scored three goals, gave the Gators an 11-7 lead with 3:58 remaining in the third period. Loyola scored three times to draw within 11-10 entering the fourth.
Will Swart, who netted four goals, and West each scored in the final period to keep SHP ahead. Luke Johnston added three goals and Jake Tsotadze scored twice. Grif Price recorded 12 saves.
Price had 13 saves and a save percentage of .765 in Sacred Heart Prep's 16-5 victory over Oaks Christian.
Jack Vort matched West with a team-high three goals. Hassan Hove, Luke Bachler, Tsotadze and Johnston each scored twice.
Girls water polo
Annika Burks and Gabby Lewis each scored four goals as Castilleja beat Presentation 18-3 in a non league contest.
Sutchie Ofori-Nyako turned field player in the second half and scored on a penalty shot. Lewis and Talula Seale divided time in the net.
Sydney Lowell added three goals while Caitlyn Chau scored twice.