Edcon Glass '92 trailed most of the way, but launched a blistering 15-6 run in the closing minutes of the game to turn the tide of the match in its favor.
Rony Rosendo topped Edcon with 14 points, while Carl Nadela added 12 markers as they chalked up their fourth win against only one defeat.
Juny Alejandro had 13 points as White gold dropped to 3-2.
Fighter Wine '90, on the other hand, improved its win-loss slate to 4-4.
Trailing at 9-11 in the early going, Fighter Wine '90 unleashed a fluid 29-10 rally to mount a 17-point bulge at halftime, 38-21, a lead they never had to relinguish nor allow their opponents to even just come close the rest of the way.
Erickson Arienza churned out 17 points, while Dave Lim added 14 for Fighter Wine '90.
In the other game, Pagcor 2000 held off Batch 2002, 51-46.
Joseph Lo tallied 12 points for Pagcor, while Pocholo Lo led 2002 with 16 markers.
The scores
First game
Edcon Glass '92 (54) - Gasendo 14, Nadela 12, Chua 10, Sulay 7, Ong 6, Espedido 3, Chy 2
White Gold '96 (49) - Alejandro 13, Uy 10, Borromeo 9, Mangubat 8, Aguilar 4, Siarot 3, Lee 1, Tan 1
Second game
Fighter Wine '90 (68) - Arienza 17, Lim 14, Benedicto 9, Que 8, Yu 8, Go 5, Ng Chee 4, Gatchalian 3
Gef-Carrier '98 (44) - Yau 14, Ngo 12, A. Ong 12, H. Ong 12, H. Ong 4, Ang 2
Third game
Pagcor 2000 (51) - J. lo 12, Reoma 11, Ting 9, Bayot 8, Villamor 6, Roma 3, Chua 2
Batch 2002 (46) - Lao 16, Pinero 8, Gaisano 5, Young 5, Kokseng 4, Lauro 2, Po 2, Ynoc 2, Cortes 1, Vizcayno 1.