World number 11 Ko, meanwhile, had grabbed a one-stroke lead with birdies at the fourth and par-5 sixth and eighth holes. But Ko made bogeys on 13, 14 and 16 to fall four adrift of Noh.

Yealimi Noh will always remember her first LPGA victory, but this will shine not just because she won, but who she beat to do it. The 23-year-old Californian shot a three-under 68 to beat 15-time ...