South Korea's Shin Jiyai overcame late nerves and a brave charge from double defending champion Ashleigh Buhai to seal her second Australian Open title on Sunday with a two-stroke victory at a wet and wild Kingston Heath.

Lucas Herbert surrendered his outright lead of the Australian Open and will go into the final round tied with American Ryggs Johnston while South Korea’s Jiyai Shin took the outright lead in the Women’s Australian.

First-round co-leader Hyojin Yang has jumped out to a two-stroke advantage midway through her Australian Open second round on the Melbourne sandbelt.

Lucas Herbert again led the way after the second round of the Australian Open while 17-year-old South Korean amateur Hyojin Yang birdied her final hole to take the lead at the Women’s Australian Open being played concurrently at two courses on the famed Melbourne sand belt.

South Korean amateur Hyojin Yang has surged to a shock two-stroke lead during the second round of the Australian Open in Melbourne.