The victory makes Nguyện the most successful Vietnamese player in PBA history, with two individual tour titles and two team championships. His first individual title came in February 2026.
Nguyện reached the final after six consecutive victories in the knockout tournament, starting in the round of 128.
Martinez entered the final as the favourite. One of the PBA circuit’s most decorated players, the Spaniard had won eight Tour titles and finished runner-up on three other occasions, compared with Nguyện’s one previous championship.
But Nguyện took control early, winning the opening three sets 15-10, 15-14 and 15-9 to build a 3-0 lead.
Martinez fought back in the fourth set, winning 15-4 to reduce the deficit to 3-1.
Nguyện, nicknamed “Anh Sáu Gia Lai”, then sealed the championship with a 15-7 victory in the fifth set, needing just nine innings to complete the win.