Minjee Lee has finished fourth at the LPGA Thailand event won convincingly by American Jessica Korda.
Korda cruised to a four-shot win at Siam Country Club near Pattaya City on Sunday to complete her wire-to-wire dominance.
The 21-year-old carded a final round of five-under 67 to finish at 25-under overall, with countrywoman Lexi Thompson rocketing to second thanks to a sizzling 64.
Korda made 25 birdies and three eagles for the tournament in her fifth career win on the LPGA.
Five shots behind Korda after three rounds, Lee needed a huge surge to vie for the title.
The West Australian shot a 69 to move to 18-under and complete a consistent tournament behind third-placed hometown hope Moriya Jutanugarn (67).
Korda's younger sister, Nelly, was tied for 14th at 12-under.
Queensland's Sarah Jane Smith was the next best of the Australians in a tie for 34th, while Katherine Kirk shared 40th.