As Lydia Ko conjured one of the most disappointing collapses of her career and Australia’s Minjee Lee quietly logged another top-five finish in the Marathon Classic on the LPGA Tour today.

Ko, the former world No. 1, has lost the ability to win routinely as she used to.

Five ahead with six holes to play and within touching distance of her first win in two years, the Kiwi bogeyed the 14th and 16th holes then made a calamitous double bogey seven at the par-five 18th hole that handed the victory to Danielle Kang of the United States, who made a regulation par alongside Ko.

The New Zealander flubbed her fourth shot into a greenside bunker and ultimately had a three metre putt to reach a playoff, which she missed. Ko’s back nine of 41 told the story.

It gave Kang, ranked No. 2 in the world, her second win in as many weeks.

Lee, meanwhile, closed with a 68 to complete four rounds in the 60s and at 13-under, finished fourth. It follows her third place last week on the tour’s resumption, and it gives her good momentum as the players head to Europe for the Scottish Open and the Women’s British Open, the year’s first major.

She was not the only member of her family to have a good day. At the European Tour’s English Championship, younger brother Min Woo Lee rattled home with a final-round 67 to finish tied-sixth.

The 22-year-old Lee, winner of the ISPS Handa Vic Open on the European Tour earlier this year, has jumped to 22nd on the tour’s points list in his breakout year. LPGA result

European Tour results