PORTLAND, Ore. - Hannah O'Sullivan routed two more opponents Thursday to advance to the U.S. Women's Amateur quarterfinals at Portland Golf Club.
The 17-year-old O'Sullivan, from Chandler, Arizona, beat France's Justine Dreher, 7 and 6, in the second round, and topped Jennifer Kupcho of Westminster, Colorado, 4 and 3, in the third.
"I'm feeling really good about my game," O'Sullivan said. "I'm just trying to be as confident as possible and taking it one shot at a time. It's been working out pretty well."
On Wednesday in the first round of match play, O'Sullivan beat Haley Mills of Tyler, Texas, 7 and 6. O'Sullivan won the Symetra Tour's Gateway Classic in February in Mesa, Arizona, at 16 to become the youngest winner in the history of the professional circuit.
O'Sullivan will face SMU junior Lindsey McCurdy of Liberty Hill, Texas. McCurdy beat 2014 winner Kristen Gillman of Austin, Texas, 4 and 3, and Oregon's Caroline Inglis of Eugene 1 up.
In the other upper-bracket quarterfinal, France's Mathilda Cappeliez will play Anna Newell of Tampa, Florida. In the third round, Cappeliez beat Elizabeth Wang of San Marino, California, 3 and 2, and Newell topped Bailey Tardy of Peachtree Corners, Georgia, 2 and 1.
In the lower bracket, England's Bronte Law will play Sierra Brooks of Sorrento, Florida; and Bethany Wu of Diamond Bar, California, will face Mika Liu of Los Angeles.
Law beat U.S. Girls' Junior champion Eun Jeong Seong of South Korea, 4 and 2; Brooks edged Maddie McCrary of Wylie, Texas, in 20 holes; Wu topped Lydia Choi of Los Angeles, 5 and 4; and Liu beat Cindy Ha of Demarest, New Jersey, 4 and 3.
Law is a junior at UCLA.
"I've learned from match-play experience that you have to treat every single opponent equally because someone has their hot day, someone doesn't," said Law, No. 2 in the women's world amateur ranking. "I don't treat anyone differently out there on the course."