Gregorio rolled 356 pins to dethrone Jutay Montebon, who carded 320. In the team finals, MDBC VBG tallied 355 to beat BIDBA BRB by 49 pins.
Chris Mendez also unseated Bert Sales, 360-300, in the mens Masters finals of the tourney supported by the Philippine Olympic Committee, Customs commissioner Antonio Bernardo and Diamond Purified Drinking Water.
PHIDBC (Philippine Duckpin Bowling Council) president Inez Magbual of DFriendly rallied from third spot to crush Ruby Villamil, 242-202, in the ladies A/B singles finals.
Rene Capulan took the mens A/B singles crown by nipping Donald Aclan, 244-242.