KAPOLEI, Hawaii | Defending champion Ai Miyazato had five birdies in a late six-hole stretch Thursday at breezy Ko Olina to open a two-stroke lead midway through the second round of the LPGA Lotte Championship.
The Japanese star, a nine-time winner on the LPGA Tour, shot a 4-under 68 to reach 9-under 135.
Hyo Joo Kim, the 17-year-old South Korean player who played in a group with 17-year-old Ariya Jutanugarn and 15-year-old New Zealand amateur Lydia Ko, was second along with Hee Kyung Seo and late starter Suzann Pettersen. Kim shot a 71, and Seo had a 72
Second-ranked Stacy Lewis was 6 under after a 71. Jutanugarn, the first-round leader after a 64, had a 75 to fall to 5 under. Top-ranked Inbee Park, coming off a victory two weeks in the Kraft Nabisco Championship, was 3 under after a 71.
Ko had her second straight 71. She won the Canadian Open in August to become the youngest LPGA Tour winner at 15 years, 4 months, 2 days. The South Korea-born Ko has two other pro victories, the New South Wales Open last year and New Zealand Women's Open this year, and won the U.S. Women's Amateur last season.
Local favorite Michelle Wie followed her opening 70 with a 76 to put her in position to miss the cut.