Unheralded American Ryggs Johnston has won his first professional title by claiming the Australian Open by three stokes, while South Korea’s Jiyai Shin claimed her second Women’s Australian Open which was played concurrently at two courses on the famed Melbourne sand belt.

Johnston, an unheralded American player, celebrated his first professional victory Sunday with a three-stroke triumph in the Australian Open, while South Korea's Jiyai Shin became a two-time winner of the Women's Australian Open, which was played concurrently at two courses on the famed Melbourne Sandbelt.

Cameron Smith had a forgettable weekend at Kingston Heath, but left Golf Australia with some parting feedback to contemplate as it weighs up the immediate future of the Australian open.

Already exhausted from three stages of DP World Tour Q-School and last week’s season-opening Australian PGA, Johnston wasn’t afforded a practice round on Kingston Heath, site of the Aussie’s national open and only Johnston’s second career start as a DPWT member, because of inclement weather.

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 won his first professional title Sunday by closing with a 4-under 68 at Kingston Heath for a three-shot victory in the Australian Open. The Arizona State alum was among three players to earn a spot in the British Open.

Unheralded American Ryggs Johnston can barely believe the company he's now in after crashing the party with a stunning and most improbable Australian Open triumph in Melbourne.

American rookie Ryggs Johnston and former world number one Shin Ji-yai win the men's and women's Australian Open titles.