Lourdes School’s Gerard Ngo also advanced following a 6-4, 2-6, 6-2 victory over Jose Lorenzo Opulencia.
In the unisex 10-under class, Bernardine Siso of Cebu downed John Marie Altiche, 6-1, 6-0, to arrange a semifinal meeting with Akio Sy, a 6-0, 5-7, 6-1 winner over Paul Nicole Magaway. In the other match, Joseph Baldonado beat Kim Ivon Saraza, 6-2, 6-1.
In the boys’ 14-under division, Ateneo’s Daniel Luis Macalino rallied past Mark Balce, 6-1, 4-6, 6-2, to advance in the quarterfinals against schoolmate Christian Canlas, who scored a 6-0, 6-1 win over Raymarc Santiago.
Boys’ 16-under sixth seed Kyle Dandan of Colegio San Agustin outclassed Chung Soo Han, 6-1, 6-1.