SYLVANIA, Ohio (AP) South Korea's Ha Na Jang birdied the par-5 18th for a 5-under 66 and a one-stroke lead Thursday after the first round of the LPGA Tour's Marathon Classic.
Winless in 23 career tour events, Jang birdied four of the first five holes on the back nine at Highland Meadows, dropped a stroke on the par-4 15th and rallied with the closing birdie.
Nannette Hill, Wei-Ling Hsu, Lee-Anne Pace and Sarah Kemp were tied for second. Kemp bogeyed the final hole to drop out of a tie for the lead.
Top-ranked Inbee Park, a three-time winner this season, birdied her final hole for a 70.
Defending champion Lydia Ko, ranked No. 2 in the world, opened with a 71.
Third-ranked Stacy Lewis also had a 71.