The Lydia Ko Express continued unimpeded in the Walmart NW Arkansas Championship, which she won by three strokes on Sunday, her third victory of the year and 13th of her career.
Ko, No. 1 in the Rolex Rankings, followed a second-round 62 with a three-under par 68 at Pinnacle Country Club in Rogers, Ark. Candie Kung and Morgan Pressel tied for second.
The victory earned her $300,000, increasing her total for the season to $1,816.738 in nine starts. Earlier this year, Ko, 19, won the Kia Classic and the ANA Inspiration back to back.