MANILA, Philippines — From the upper box in this historic arena, a grandfather, ”Pilo,” blurted out his disgust in the third period, with his blue medical facemask off. After a turnover by wily guard Thirdy Ravena in the third quarter, Pilo shouted: “Be a security guard instead! (Mag security guard ka na lang!).” Other fans — all masked — on sections 405 and 406 were still hoping for a Filipino turnaround: for booming triples, for successive defensive stops. Yet what turned around a Sunday night, FIBA-sanctioned pandemic ballgame were simple, unfancied plays from the visiting New Zealand Tall …