Spain's David Puig on Saturday left his closest rivals trailing in his wake after firing a six-under-par third-round 66 to storm nine shots ahead at the International Series Singapore.

South Korea's Eom Jae-woong signed for a 69 to end the day in outright second place, while Thailand's Atiruj Winaicharoenchai and Australia's Jack Thompson are a further shot back in a share of third place with their three-day total of 10-under-par 206.

Puig, who plays for Torque GC on the LIV Golf circuit, charged out of the blocks strongly with three birdies on holes two, four and five before an eagle-three on eight put him further ahead at Tanah Merah Country Club.

The 21-year-old parred his next nine holes before closing with another birdie on 18 to stand on the verge of winning his first professional individual title since he joined the play-for-pay ranks slightly over a year ago.

"Yeah, played very good again, hit a lot of fairways and greens and made some putts on the front nine," said Puig, whose 54-hole score is the lowest of the season on the Asian Tour.

"I think I missed some on the back but overall played very good, very steady and pretty happy."

While Eom still has a chance to deny Puig his breakthrough, the South Korean, who finished tied-second at the New Zealand Open this year, conceded it might be too late to mount a fightback.

"Puig played very well and he is too far ahead. It will be tough to catch him tomorrow. But I learned a lot from watching how he played today," Eom said.

"I will just play my game tomorrow and try to finish the best I can."