Teenager Oliver Goss emerged from a battle of amateurs to win the WA Open at Royal Perth Golf Club today.
Goss, 18, beat overnight leader Brady Watt at the fifth play-off hole after both finished tied at 16-under 272.
"I guess things were just flowing and I definitely putted better today than I have any other day. I think that's what made the difference," said Goss who had a final round of six under - his second 66 for the event.
"Brady is another solid player, it definitely wasn't easy, but I guess I may have felt the pressure a bit more if I had been playing with (professionals) Scott Strange or Brett Rumford."
With an eagle opportunity on the 18th to claim the championship, Goss came up short and, with Watt making a birdie, the pair headed to a play-off.
They twice played the par-five 18th hole, both making birdies, before moving to the short par-four eighth hole (284m).
"I thought I have got to win, I have nothing to lose, so I just pulled out the driver the last few times and fortunately it worked out," said Goss, the first amateur since Stephen Leaney in 1991 to win the WA Open and the first amateur since Danny Lee in 2009 to win a PGA Tour of Australasia tournament.
"I like to think it's quite a good achievement and I am really happy," Goss, from Royal Fremantle, said.
He also won the WA amateur championship this year, made the semi-finals of the US amateur championship and has won a scholarship to the University of Tennesee.
Watt, 22, of Royal Perth, was happy with his performance, a week after he won the Keperra Bowl, a major Queensland amateur event, with a score of 20 under.
"I was just happy because I won last week and put myself in position to get another W this week. I fell a little bit short but that's golf," he said.
Finding the form he was looking for all week on the back nine on Sunday, Rumford finished the leading pro at 14 under.
"A good finish. I don't know where that was all week," said second-round leader Rumford, who was impressed by the young amateurs.
"Certainly for these guys they have tremendous talent. I am really looking forward to seeing what these guys can do in the future."
With a final round of seven-under 65, Rumford set a course record at his home club of Royal Perth but he wasn't alone, Daniel Nisbet also managed the feat, on his way to recording a 12-under 276, tied for sixth finish in his first outing as a professional.
Defending champion Rohan Blizard (67) and last year's runner up Ashley Hall (69) finished, tied for fourth at 13 under.
A further shot back were Queenslander Nisbet, South Australian Nick Cullen (67) and local pro Strange (70) who had a hole-in-one at the par-three 12th today.
The players were forced to stop play for almost an hour from 12.30pm to wait for an electrical storm to pass.