Edrick Ferrer and Joseph Yeo scored 12 points apiece but it was Manny Ramos who carried the ICTSI Archers at endgame as he went two-for-four from the freethrow line to secure the win.
ICTSI actually sat on a 70-57 cushion midway in the final quarter but the Archers suddenly turned cold, enabling Viva, behind Dennis Miranda and Warren Ybanez, to strike back to within two, 72-74, 22.3 seconds to go.
But ICTSIs trapping defense behind Manny Ramos and Fil-Australian Joaquin Thoss broke the Water Specialists offensive patterns down the stretch.
Ramos drew fouls from Francis Gerard Jones in the last 17.9 seconds and later from Mark Isip for the splits that sealed the final count.
Warren Ybanez could have sent the match into overtime but his shot came a tick late of the final buzzer.
Isip paced Viva Mineral Water with 14 points while Miranda added 10.
The PBL Outreach Tour will invade Pampanga today with an exciting twinbill at the University of Assumption gym.
John-O will test Nutri-licious at 3 p.m. while RP-Cebuana collides with Challenge Cup champion Welcoat Paints in the 5 p.m. main encounter.