Sofia Bellver-Eymann scored for the Wildcats (14-1-1, 6-1-1), who host co-second place Burlingame at 4:30 p.m. Tuesday.
Woodside, which played Menlo-Atherton to a scoreless draw in its previous match, also has a game at co-second place Sequoia on Thursday.
Aragon (5-7-2, 2-5-1) is in fifth place in the PAL. Burlingame and Sequoia are both 5-2-1 in league play.
In a West Catholic Athletic League boys soccer match Saturday, St. Francis won its fifth straight match, beating Bellarmine 1-0.
The Lancers (11-5-1, 7-3-1) were near the bottom of the standings after losing to Valley Christian on Jan. 19 but have since risen to the top of the league standings.
St. Francis hosts St. Ignatius on Wednesday at 4 p.m. The Wildcats beat SF 4-1 in their first meeting.