SYLVANIA, Ohio (AP) Lydia Ko outlasted Ariya Jutanugarn and Mirim Lee to win the Marathon Classic on Sunday for her fourth LPGA Tour victory of the season.
The top-ranked Ko made a 10-foot birdie putt on the fourth extra hole after Jutanugarn and Lee ran into trouble on the par-5 18th.
Also the 2014 winner, Ko closed with a 2-under 69 at Highland Meadows to match Jutanugarn and Lee at 14-under 270. The 19-year-old New Zealander has 14 LPGA Tour titles, also winning consecutive events in South California - the second the major ANA Inpiration - and later in Arkansas.
Ko is 4-1 in playoffs, with the loss coming to Brooke Henderson this year in the KPMG Women's PGA Championship.
Ko missed a 5-footer birdie putt on the third extra hole, sending the trio back to the 18th tee. Jutanugarn had chances to win on the first two playoff holes, missing birdie putts of 14 and 8 feet.
Lee shot a 65, bogeying the 18th after making birdies on Nos. 13, 15, 16 and 17.
Jutanugarn had a 68, reaching 14 under with an eagle on 17. The long-hitting Thai player won three straight events in May.