Korean female golfers swept the top three spots in the Canadian Pacific Women's Open held in London, Ontario on Sunday.
Ryu So-yeon who took the lead in the third round, finished the final round with five birdies and two bogeys, wrapping up the event with a 23-under 165.
Choi Na-yeon finished second at 21-under, followed by Park In-bee at 18-under.
Ryu, who earned US$337,500 in prize money, moved up four places to fifth in the women's world golf rankings by winning the tournament.
It was her third win in 40 LPGA Tour events and her first win in two years.
Ryu's last win came at the Jamie Farr Toledo Classic in August 2012. Since then, she's had 27 top-10 finishes, four of them for second place.
"I feel like I overcame a big obstacle after a long wait," she said.