Defending champion Inbee Park shot a 4-under 69 Friday to take a one-stroke lead after the second round of the World Ladies Championship.

The second-ranked Park had six birdies to offset two bogeys on Mission Hills' Blackstone Course. The South Korean was at 8-under 138 overall, a stroke ahead of Holly Clyburn (65) and Lin Xiyu (68).

Clyburn made nine birdies to shoot the low round of the day.

Park is coming off a victory at the HSBC Women's Champions in Singapore on Sunday, her 13th LPGA Tour title.

Suzann Pettersen, the 2013 winner, was tied for 10th after a 72.