Gonzalvo had 14 points and Kristal Martin added eight points for Adamson, which will shoot for the last quarters seat in the pool against Chiang Kai Shek College on Monday.
Meanwhile, Caera Celis dropped 17 points as St. John’s Institute advanced to the next round after a 25-14, 24-26, 15-8 escape over San Felipe Neri Catholic School for a 3-0 win-loss slate in Pool C.
University of Perpetual Help System Dalta defeated Cannosa Academy, 23-25, 25-9, 15-3, for a 2-1 card on top of Pool B while inaugural season winner California Academy opened its campaign with a marathon, 21-25, 25-18, 25-23, come-from-behind win over Bethel Academy in Pool A.