South Korea's Park Sung-hyun has come from behind to pip Australia's Minjee Lee, who's had to settle for second in the LPGA Women's World Championship in Singapore.
Park produced a sizzling final round of eight-under-par 64 in windy conditions to clinch a two-stroke victory over Lee.
The Australian, who had started in second place on Sunday behind Thailand's world No.1 Ariya Jutanugarn, had taken a two-stroke lead when she made her third birdie of the round at the par-5 eighth.
The 22-year-old made another birdie on the par-4 12th but Park was continuing her charge and took a share of the lead with her seventh birdie of the round on 13 and took a two-shot lead on 16 with her final birdie while Lee made a bogey on 14.
Lee needed to make an eagle on the final hole to force an unlikely playoff but her second shot landed about 30 feet from the pin.
The 25-year-old Park from Seoul opened her final round with three-successive birdies and made two more at six and seven but a bogey on the par-5 eighth had her turning at four under for the round.
She made a further four birdies on the back nine and tapped in for par from less than three feet to sign for a total of 15-under 273 on the Tanjong Course at Sentosa Golf Club.
"I'm really happy with my play today. I am really happy because I used to have rough starts to my year and I think that I will now feel really comfortable for the rest of the season," Park said through an interpreter.
Lee, who was also the runner-up last week in Thailand, shot 69 to finish on 13-under 275 as she was overtaken by Park, who had started the final round in eighth place.
Spain's Azahara Munoz and Korea's Ko Jin-young both shot closing scores of 69 to finish tied for third, two strokes further back, with Kim Hyo-joo (70) and American Amy Olson (70) tied for fifth on 10-under 278.
Jutanugarn had a one-shot lead heading into the final round but a double bogey at the par-3 fourth dropped her down the leaderboard and she was unable to recover.
She made a double-bogey seven on 13 and another bogey on 14 ended her hopes of winning her first event in Asia as she closed with a 75 to finish in equal eighth with eight-under 280.