ADELAIDE, Australia (AP) -- Katherine Kirk set the early pace at the Women's Australian Open on Thursday, shooting an 8-under 65 at Royal Adelaide to take a two-stroke clubhouse lead.
The Australian birdied four of her first five holes and three of four in the middle of the back nine. Tied for second were Marissa Steen and Jane Park of the United States and South Korean Chella Choi.
Canada's Brooke Henderson was four strokes behind after carding 69, while No. 1-ranked Lydia Ko shot 71. Five-time champion Karrie Webb shot 76 ahead of the afternoon starters.