Chicago - Former US Women's Open winner Ryu So-yeon claimed her first title of 2018 with a closing five-under 67 at the LPGA Tour's Meijer Classic on Sunday.
The 27-year-old South Korean finished with a 21-under 267 total at Blythefield Country Club to beat runner-up Caroline Masson by two strokes and earn her sixth career win.
It is her first title since last year's NW Arkansas Championship. She also won the US Open in 2011 and followed that with a rookie of the year award in 2012.
New Zealand's Lydia Ko shot a 67 to finish third at 18 under.
Third round leaders Anna Nordqvist and Lee-Anne Pace finished in a tie for fourth with three others at 17-under 271. Nordqvist and Pace each shot 73 on Sunday after firing almost identical rounds of 64 in the third round.
Jacqui Concolino (66), Azahara Munoz (68) and Angela Stanford (70) also finished a 17 under.
US Women's Open winner Ariya Jutanugarn fired a tournament-record 62. Ariya made eagle on number eight after making birdie on five of her first seven holes. She added three more birdies on the back nine.
Ariya, of Thailand, finished just one shot back of sister Moriya who closed with a four-under 68 on Sunday.
Scores after Sunday's fourth round of the LPGA Meijer Classic (par 72, USA unless noted):
267 - Ryu So-yeon (KOR) 64-67-69-67
269 - Caroline Masson (GER) 67-66-68-68
270 - Lydia Ko (NZL) 69-67-67-67
271 - Jacqui Concolino 69-67-69-66, Azahara Munoz (ESP) 68-70-65-68, Angela Stanford 68-67-66-70, Lee-Anne Pace (RSA) 67-67-64-73, Anna Nordqvist (SWE) 66-68-64-73
272 - Nelly Korda 70-68-68-66, Lexi Thompson 68-70-67-67, Moriya Jutanugarn (THA) 70-69-65-68
273 - Ariya Jutanugarn (THA) 69-70-72-62
274 - Park Hee-young (KOR) 73-66-69-66, Ko Jin-young (KOR) 70-69-68-67, Oh Su-hyun (AUS) 66-68-73-67, Lizette Salas 66-72- 67-69, Michelle Wie 69-67-69-69, Sophia Popov (GER) 67-68-67-72, Sakura Yokomine (JPN) 68-64-70-72