The West Australian began the final day at Twin Creeks leading by one stroke from playing partners Lucas Herbert and Daniel Nesbit, who found themselves up against it as the Australian by way of South Africa put on a clinical display to reach a total of 24-under and claim victory by six shots.

“It feels pretty good,” Scrivener said after the round. “I think it looked a lot easier than what it was. It’s hard work, it’s hard to win.”

Early birdie chances at the opening two holes failed to find the cup for Scrivener who then found the greenside bunker at the driveable 3rd hole. The resulting bunker shot barely clung onto the edge of the green and an average birdie attempt left him his first test of the day.

The 28-year-old then holed out confidently to make his four and remain at 17-under before a run of four straight birdies saw him separate himself from the pack. Acknowledging the importance of the par at the 3rd after the round.

“Early putts like that make a difference. I played the first couple of holes really well and didn’t really get anything out of that,” Scrivener said. “It’s all momentum.”

Scrivener's putter was hot during the final round after missing multiple chances early. PHOTO: Andy Zakeli/Golf NSW

Hebert tried admirably to keep pace with Scrivener but his lone two birdies on the front side, at the 3rd and 5th holes, were interrupted by a bogey at the 4th before Scrivener gave him a chance at the long par-5 9th hole having himself bogeyed the previous hole.

The Mandurah Country Club member hit arguably his worst shot of the week, a 3-wood that found a fairway bunker some 90 metres short of the green, with Herbert positioned in the fairway for two looking straight up the green.

Scrivener went from one bunker to another, finding the greenside trap, before Herbert missed his chance. Himself finding a bunker right of the hole, eventually making a bogey six to Scrivener’s par five to give the West Australian a five-shot lead heading to the back nine.

“Probably the biggest momentum shift was on nine I think,” Scrivener said. “I wasn’t looking too good there and somehow I picked up a shot there on Lucas instead of losing one, that was probably the biggest turning point.”

FINAL LEADERBOARD

Scrivener made back-to-back birdies at 10 and 11 to keep the momentum going as Herbert threw one last challenge at the World No. 274 with a birdie at 11 followed by a chip in eagle at the short 12th hole.

Unfortunately for the Victorian, the three-shot deficit was as close as he would get, finishing with a two-under-par final round of 70 after bogeys at the 14th and 16th holes. Closing with a birdie three that left him with a positive outlook and appreciation of just how good his playing partner closed out the win as he heads to The Australian and the Australian Open next week.

“I am pretty proud of myself playing really the way I would have liked in that last round, I can’t be too unhappy,” Herbert said. “I just said to Jason that’s probably some of the best golf I’ve ever seen in those conditions, last round pressure. That was phenomenal. He didn’t miss a shot.”

Lucas Herbert finished six shots back of Scrivener. PHOTO: Andy Zakeli/Golf NSW

Scrivener appeared on cruise control as he closed out the round once Herbert fell back, with none of the expected pressure of securing a maiden win showing on the calm and collected West Aussie.

Adding birdies at the 15th and 16th holes before pars at the final two holes secured a seven-under-par final round of 65, the best score of the day.

“I’m just stoked really, I’ve been working pretty hard the last few years, stayed patient,” Scrivener said of the win.

Scrivener will now head to the Hong Kong Open to start his 2018 European Tour season next week, missing his home open to tee it up at a course that he enjoys. With a new level of confidence after finally breaking through and with the Kel Nagle Cup part of his luggage.

“I was kind of prepping for Hong Kong,” he said of his decision to skip the Australian Open. “I can’t pass up a European Tour start and a course that I feel like I have a pretty good chance to play well at.”

Blake Windred and Chris Crabtree shared low amateur honours at 14-under par, after it looked to be a battle between superstar in making Min Woo Lee and Japan’s Takumi Kanay, playing in the penultimate group.

The NSW Open will return to Sydney's west and Twin Creeks in 2018. A decision the players, particulalry Scrivener, will be happy with having raved about the course's condition all week.

“Its brilliant,” Scrivener said of the Luddenham layout, echoing the thoughts of his fellow players. “The greens are amazing, the best greens we have played on all year.”