Yannaphon, who was also the first runner-up in 2009 here in Hong Kong, shot a stunning 717 series to add to his other three-game series of 668 for the lead with 1385. Overnight leader and defending champion, Ryan Lalisang of Indonesia slipped down to second on 1379.
A second Thai, Surasak Manuwong claimed third spot with 1377 to join his compatriot and Lalisang for the automatic entry into Stage 2 finals. Lee Gyo Hwan of Korea, who rolled the tournament's first perfect game, missed the top bracket in fourth with 1375 while a third Indonesian, Yeri Ramadona completed the top five with 1362.
Hong Kong national team member, Wicky Yeung become the first qualifier to surpass the 1400-mark with 1423 to take over top spot in the local pool. Tony Wong and overnight leader, Michael Tsang finished second and third with 1330 and 1327 respectively.