Published: Oct 12, 2012 3:19 AM EDT
Updated: Oct 13, 2012 6:32 AM EDT

KUALA LUMPUR, Malaysia (AP) - Defending champion Na Yeon Choi took a two-stroke lead Friday in the LPGA Malaysia, shooting a 4-under 67 to reach 10 under.

The U.S. Women's Open winner in July for her first major title and only victory of the year, Choi was 11 under after birdies on Nos. 12 and 13. The South Korean player bogeyed the par-3 17th and closed with a par at Kuala Lumpur Golf and Country Club.

American Sydnee Micheals was second after a 65. Norway's Suzann Pettersen shot a 64 - the best round of the day - to match American Lizette Salas and Japan's Momoko Ueda and Mika Miyazato at 7 under. Salas and Ueda shot 67, and Miyazato had a 69.

Australia's Karrie Webb, tied with Choi for the first-round lead after a 65, had a 71 to drop into a tie for seventh at 6 under.