Menlo School won the duel of Peninsula Athletic League Ocean Division co-leaders, beating visiting Half Moon Bay 3-1 Tuesday behind senior right-hander Griff McGarry's gem.
The Virginia-bound senior struck out 12, allowed three hits, and gave up one unearned run in going the distance.
McGarry (5-0) helped the Knights (10-7, 6-1) assume sole possession of first place.
McGarry also scored the game's first run. He stroked a lead-off double to deep center, and then eventually scored on Justin Nam's sac fly for a 1-0 first-inning lead.
In the second, Menlo's Justin Kasser walked with the bases loaded and senior Chandler Yu, who led off the inning with a single, scored for a 2-0 lead.
Menlo added an insurance run in the sixth. With two out, sophomore Sam Rosenberg reached on an error, advanced on another error and walk, and then scored on Kasser's single.
Menlo next plays at Mountain View 4:00 pm Thursday.
Leland Pama earned his first start of the season and pitched well enough to win, although Allen Iwamoto pitched a little bit better and Gunn fell to host Monta Vista 2-0 in a SCVAL El Camino Division contest Tuesday.
Nathan Nakamitzu collected three hits for the Titans (8-9-1, 4-5), who host the Matadors (8-11, 4-5) on Thursday at 4 p.m. Nakamitzu also pitched a perfect sixth inning.
Pama allowed two runs on nine hits. He struck out two and walked two. Pama threw 89 pitchers, 54 for strikes.
Anderson Page and Finn O'Kelly each shot 3-over 39s to help Sacred Heart Prep beat Crystal Springs Uplands, 207-232, in a West Bay Athletic League match at Palo Alto Hills Golf and Country Club on Tuesday.
Luke Peterson and Anikat Bhardwaj matched rounds of 42 for the Gators.
Taylor DeGroff scored seven goals and recorded eight draw controls and Castilleja beat host Sequoia 17-3 in a nonleague contest on Tuesday.
Anika Adzich added a pair of goals, eight draw controls and eight assists for the Gators (4-8), who host Menlo School at 3 p.m. Friday at El Camino Park.
Jordan Jackson and Lindsay Segal each added a pair of goals for Castilleja.
Gunn beat visiting Willow Glen 20-4 on Tuesday night to keep pace with Los Gatos atop the SCVAL De Anza Division standings.
Andrea Garcia-Milla scored four goals and added three assists for the Titans (12-2, 10-1), who travel to Mountain View (8-5, 7-4) on Thursday to play at 4 p.m.
Mountain View lost to the Wildcats 12-10 on Tuesday after leading early. Los Gatos (10-1, 10-1) comes to Gunn for a 7:30 p.m. contest next Tuesday in what might decide the league title.
Palo Alto (9-5, 9-2) still has a chance at the crown and plays at Gunn a week from Thursday. The Vikings beat visiting Leland 12-5 on Tuesday.
Laurel Comiter and Grace Williams each added four goals in Gunn's win over the Rams. Becca Chapman had three goals,and Janis Iourovitski and Gemma Shastri had two apiece.
Defenders Anna Tsai and Lucy Augustine each caused three turnovers in support of goalkeeper Mikaela Wayne, who made five saves.
Menlo (9-2) held off East Bay power Amador Valley 11-10 in a nonleague match at home Tuesday.
USC-bound senior Sophia Donovan had three goals and an assist. Freshman Page Wolfenden and sophomore Charlotte Swisher each had hat tricks for the Knights.
Menlo takes a six-game winning streak to Carondolet on Wednesday.
Alena Stern made 11 saves while fellow senior Indira Varma had a goal and an assist.
The Knights led by two with minutes left after Swisher scored her third goal. Amador Valley (13-3) scored and Donovan picked up one of her five draw controls, and Page Wolfenden won another draw as the Knights thwarted a last attempt.
Menlo-Atherton lost at Monte Vista-Danville 15-7 in a nonleague game Tuesday night.
The Bears (10-5) contained the potent Mustang attack in the first half thanks to six ground ball wins by defender Grace Carlson and five saves from goalie Samantha Gamez.
Theresa McGannon scored to open the first half and Annie Payne added a pair in the second, but the Mustangs (12-4) scored in flurries and pulled away.
Bea Geaghan-Breiner scored and had five draw controls for M-A.
The Bears visit Sacred Heart Prep at 4 p.m. Thursday.
Beto Macedo and Max Cluss each won three-set matches at the top of the singles ladder to help Sacred Heart Prep down host Pinewood 7-0 in a West Bay Athletic League match.
David Desai and Stefan Schlotter also won their singles matches for the Gators (10-7, 8-5), who can move into a third-place tie with Crystal Springs Uplands with a win against Priory on Thursday.
Menlo School (19-2, 13-0) posted a 7-0 victory over host Priory on Tuesday and finishes the season at Nueva on Thursday.
The WBAL individual championships get underway at Menlo School on Monday.