Starting the day with a five-shot cushion, Atthaya faced little threat as she traded five birdies against two bogeys for a solid three-under-par 69 at the Pondok Indah Golf Course, reports the Bangkok Post.
Atthaya finished at 14-under 202, well ahead of South Korea’s Lee Da-Yeon, who could only muster a 71 to claim the second spot on 209, with compatriot Kim Min-Byeol (70) another two shots back in third.
A maiden Ladies Asian Tour Series win ensured that Atthaya did not finish the season empty-handed after coming close with two runner-up finishes on the LPGA Tour this season.
To make the victory even sweeter, Atthaya celebrated a double success when she and her partner, Jaravee Boonchant, dominated the team title, also with a seven-shot margin.
Jaravee closed with her best performance of the week, carding a 70 to finish tied for 13th individually, but it was sufficient to help Team Thailand 2 dethrone South Korea from their team crown with an aggregate of 15-under 417.
Two Korean combinations shared second place, with Team Korea 5 (Kim Min-Sol and Lee Hyo-Song) and Team Korea 4 (Hwang You-Min and Kim Min-Byeol), both finishing on identical 424s.
The win earned Atthaya a cool US$110,000, and she also secured a share of the $24,000 with Jaravee for their success as a team.