Purcia Forwarders was trailing until the third period, 34-45, behind the assault of Jaymar Elloren, Taks Moral and Elran Gelbolingo.
But a booming triple by Joseph Jayme at the start of the final quarter kicked off the run of Purcia as they eventually took the lead.
However, it was Bert Purcia's 10 pivotal points coming from the shaded area in the winding minutes that bailed Purcia out of danger to nail its first win.
Randy Francia top scored with game-high 22 points while Gary Cortez and Joseph Jayme posted 17 and 15 points, respectively, for Purcia in the 35-above division.
On the other hand, Dondon Llenos and Arthur Santillan provided District Collector with 22 markers as Elmer Bailio, who sparked a fourth quarter run with three successive triples, failed to save Assessment.
In the other game, Dione "Big Boy" Edera led-CIIS nosed out MJDL, 65-58.
The scores
First game
Purcia (81) - Francia 22, Jayme 17, Cortez 15, Purcia 12, Alpas 6, Faciolo 4, Pancho 2, Banghal 2, Pelonio 1
MJDL (70) - Elloren 13, Moral 11, Gelbolengo 10, B. Medalle 7, Daan 6, Bondoc 6, N. Medalle 5, Villaronza 4, Palero 4, Jordan 2, Navaja 2
Second game
Collectors (62) - Llenos 22, Santillan 14, Capahi 8, Bantilan 4, Alo 4, Bacurnay 3, E. Cilocilo 2, Velarde 2, I. Cilocilo
Assessment (46) - Lopez 14, Pernito 14, Bailio 9,Borromeo 4, Abarintos 4, Banaug 2