Sportal Korean Sun Ju Ahn leads the ANZ Ladies Masters after firing a stunning eight-under 64 in the first round, while pre-tournament favourite Karrie Webb could manage only a 71. Ahn made 10 birdies on the Royal Pines layout in Queensland and heads into Friday&aposs second round with a two-stroke lead over Rebecca Brewerton of Wales and Swede Cecilia Ekelundh. Australians Loraine Lambert, Michelle Ellis and Tamie Durdin are part of a group of five players – including Sakura Yokomine of Japan and Yun Jye Wei of Chinese Taipei – at five-under. American glamour girl Natalie Gulbis fired a 69 to trail by five shots. MFS Women&aposs Australian Open champion Webb will need to improve dramatically on day two after an uninspiring back-nine cost her on Thursday. After getting to two-under after 10 holes, Webb failed to make a birdie on the final eight, and dropped a shot at the 144-metre 16th.