Monday qualifier Chanettee Wannasaen came into the Portland Classic having missed the cut in her last ten LPGA Tour starts and closed on Sunday with a 63 to win by four shots.

The 19-year-old Thai player etched her name in the history books as the third-ever Monday qualifier to win on the LPGA Tour, with a total score of 262 (-26), a new tournament record.

“I’m feel really proud of myself because I really work hard for the trophy and it’s very happen right now. I’m really glad for myself. I feel thank you to my team, to my manager, to my caddie, to all the fan, my family to cheering for me.

“I don’t give up. I always to work hard, to work hard for improve my short game, improve my mind, improve my play,” said Wannasaen. “I do everything for get a trophy.”

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China’s Xiyu Lin closed with a 64 to finish second at 22-under, her fifth runner-up performance of the past two seasons. Lin started the tournament with a double bogey and two bogeys in her first nine holes but her final round included eight birdies, including six in her closing ten holes with two of them coming down the stretch on No. 17 and 18.

“I kind of wish I can cross the first nine holes I ever played off, and then I’ll be 25-under,” said Lin. “But like I have been struggle a little bit with my putter recently, so this week I change a grip, change the setup a little bit, and like I said, the first nine hole on Thursday I really thought I’m going home. So the way I battle it back it’s pretty good, and to see the putter working it’s a great feeling.”

Her compatriot Ruoning Yin (66), American Gina Kim (66) and Spaniard Carlota Ciganda (67) finished in a tie for third at 20-under.