Aman Raj was the lone Indian to make the cut at the 38th GS Caltex Maekyung Open Golf Championship on Sunday but he finished his final round at 77 to end Tied-57.
Aman Raj had two doubles on his first nine, which was the back nine of the course and in total he had two doubles and four bogeys, and just two birdies at 10-over 294.
Korea's Taehee Lee prevailed on the third extra hole to complete a wire-to-wire victory and claim his first Asian Tour title.
Lee, who shared the overnight four-shot lead with Finland's Janne Kaske, was locked in a tight battle with the Finn through the day as they closed with matching even-par 71s to tie on nine-under-par 275 after regulation play at the Namseoul Country Club.
Lee took home a winner's prize purse of USD 266,798.
It was a birdie from six feet on the 75th hole that sealed the deal for Lee as Kaske was left to rue a bad break on the 18th fairway after his drive found a divot and his second shot would end up 20 yards short of the green.
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Kaske eventually three-putted for a double-bogey.
Korea's Daehyun Kim returned with the day's best score of a 65 to take third place on 276 while last year's winner Sanghyun Park settled three shots back in fourth following a second consecutive 69 at the storied event.
Thai star Prom Meesawat battled to a 68 to take seventh place on 280 while compatriot Phachara Khongwatmai improved his tied-12th finish last year by signing for a 73 to settle a further shot back in joint-eighth at the event, co-sanctioned by the Asian Tour and the Korea Golf Association.
Taehee Lee trained under Korean legend Sangho Choi, a two-time winner of the Maekyung Open, at the Namseoul Country Club from 2003 to 2010.
Kaske, an avid guitarist, graduated from the Augusta State University, where he played in the same team alongside Patrick Reed for a semester.