World No 1 Lydia Ko has safely advanced to the quarterfinals of the US Women's Amateur by winning two matches yesterday.
New Zealand's Ko scrambled out of deep rough on the 18th hole to outlast Celine Boutier, 18, of France, 1-up, in the round of 16.
Top qualifier Hyo-Joo Kim, of Korea, was eliminated in the third round at the 5954m, par-72 course at The Country Club in Ohio by Canada's Nicole Zhang, who beat Kim 1-up.
Ko drove deep into the right rough on the 18th hole of her match with Boutier when leading 1-up. The French player hit to the back of the green from the middle of the fairway. With a good lie and the match on the line, Ko aimed at the green with a pitching wedge. She missed it left and short, but avoided a greenside bunker.
Ko chipped to within 1.2m of the hole. When Boutier failed to make a 12m putt for birdie, Ko stroked the putt into the middle of the hole for the win.
In the morning's second round Ko beat American Amy Anderson, 3 and 2. Ko faces Paula Reto, South Africa, in tonight's quarterfinals.
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