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.

Unheralded American Ryggs Johnston has joined home hope and halfway frontrunner Lucas Herbert in the Australian Open lead after a wet and wild third round.

Lucas Herbert clung to a share of the lead at his home Australian Open on Saturday as American rookie Ryggs Johnston made a charge in a waterlogged third round and favourite Cameron Smith crashed out of contention.

Memories of a wire-to-wire Irish Open win, of Tiger Woods at Kingston Heath in 2009 and a stronger desire than his main US rival to win will fuel a desperate final day charge from Lucas Herbert at the Australian Open.

In 1965 South African legend Gary Player won the fourth of his staggering seven Australian Opens with what remains a record winning score of 28-under.

An unflappable Lucas Herbert led his home Australian Open at the halfway mark on Friday as fan favourite Cameron Smith tumbled down the leaderboard with a poor back nine at Kingston Heath.

Lucas Herbert again led the way after the second round of the Australian Open while South Korean amateur Hyojin Yang birdied her final hole to take the lead at the Women’s Australian Open being played

Lucas Herbert shot an 8-under 63 Thursday at Victoria Golf Club, including an eagle on his last hole, to take the early clubhouse lead at the Australian Open, with fellow Australian and 2022 British Open champion Cameron Smith two strokes behind.

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