Fourteen-year-old New Zealand amateur Lydia Ko was 3 over after a 72, one of only nine sub-par rounds Saturday. She won the New South Wales Open two weeks ago to become the youngest winner of a sanctioned professional tour event.
Australian star Karrie Webb, a four-time winner in the event, was 6 over after her third straight 75.
Second-ranked Suzann Pettersen also was 6 over after a 74. The Norwegian star opened with an 80 — the second-highest score of her LPGA Tour career — and had a 71 on Friday to make the cut.
The LPGA Tour is sanctioning the national championship for the first time, teaming with Australian Ladies Professional Golf and the Ladies European Tour.