It was a tightly fought match most of the way, with VRJ taking only a marginal 73-70 lead heading into the final canto.
But VRJ caught fire late in the fourth period behind the triumvirate of Michael Arias, Dodong Rosaroso and Amor Ciabo to consummate the come-from-behind victory.
Arias spearheaded VRJ with a game-high 28 points, Rosaroso had 18 points, while Ciabo chipped in 14 points on top of eight rebounds as they bettered their win-loss record to 4-1.
Toto Lawas and Lito Posadas had 18 and 13 points, respectively, for Kartabz, which fell to 3-1.
On the other hand, Cablex improved its win-loss mark to 3-5 after stunning the highly-favored Colonnade Supermarket, 93-86 in the 30-above category.
Fred Del Campo and Ekong Mosqueda dished out 18 points apiece, while Jayford Culipano and Jay-R Polanos combined for 23 markers for Cablex.
First game
VRJ (95) - Arias 28, Rosaroso 18, Ciabo 14, Dacayana 10, Atillo 8, Granada 4, Yncierto 4, Mata 4, Oropesa 3, Bacla-an 2
Kartabz (87) - Lawas 18, Posadas 13, Labra 12, Nabua 11, Lopez 8, Cortes 7, Niere 6, Ibo 6, Egpyt 2, Honoridez 2, Gabate 2, Padogdog 2
Second game
Cablex (93) - Mosqueda 18, Del Campo 18, Culipano 13, Polancos 10, J. Sumalinog 7, Paez 7, Empacis 6, Belarmino 6, Cabacoy 4, Wawa 2, Secuya 2
Colonnade (86) - Dinglasa 19, Acapulco 16, R. Sumalinog 14, Marturillas 14, Petallar 10, Montano 9, Lim 2, Monreal 2