Lao, who earlier ruled the June edition, was in her full form again to win the September outing, ending the eight-game action with 1,511 pinfalls.
Alexis Sy, May's top bowler, trailed Lao with 1,489 points and last month's top bowler, Rocci Damole, ended third with 1,472 pinfalls.
Flor Bissonette was fourth with 1,293 and Xyrra Cabusas took the fifth slot with 1,219.
Among the top five participants in September's action, Bissonette will earn the ticket to the Bowler of the Year (BOY) finals since all the top for placers already were in for the showdown set later this year.