Amateur Amy Yang, 16, holds a one stroke lead going into the final round of the Australian Ladies Masters.
US unless stated
-11 A Yang (Kor)
-10 L Kreutz (Fra)
-9 T Joh, C Cartwright
-5 K Taylor (Eng)
-3 K Webb (Aus)
Level L Davies (Eng)
+1 A Miyazato (Jap)
Yang shot a two-under-par 70 for an 11-under total of 205 - one better than France's Ludivine Kreutz, who had a hole-in-one in her five-under-par 67.
Another amateur Tiffany Joh, 19, and fellow American Catherine Cartwright are tied for third on nine under. Title holder Karrie Webb is eight shots back.
No amateur has won a major women's golf event in Australia.
Korean Yang - a Gold Coast student - made a few mistakes towards the end of her third round at Royal Pines and admitted she was nervous playing in front of a big gallery.
Her coach, Laurie Montague, said he had never seen such a talented 16-year-old.
"Obviously I've seen a lot of good players but I've never seen someone of 16 go into a four-round professional tournament - the biggest tournament in Australia - and play that well," he said.
"Her record around here is great and she's been shooting low numbers."
Kreutz was amazed when she aced the 154-metre (170-yard) par-3 14th, after turning away in disgust at her tee shot.
"I didn't like it, it was a bad shot," she said.
The six-iron strike failed to reach the green, but bounced on and ran 20 metres across the green and into the cup.
Webb headed straight to the putting green with her coach Ian Griggs after a frustrating third round of 74 left her on three under.
England's Kirsty Taylor shot 68 for a five-under total of 211, and compatriot Laura Davies is level par after three rounds following her 70.
Japan's Ai Miyazato, who led the tournament for three rounds last year, had a 71 for a one-over-par total of 217 - 12 off the pace.