Brett Rumford's love affair with Perth's World Super 6 golf event continues, with the Australian taking out round-one honours at the innovative tournament.
Rumford, the defending champion, will enter round two as the man to catch after shooting an eight-under par 64 on Thursday, two shots ahead of former world No.1 Lee Westwood.
Victorian James Nitties joined Westwood at six-under.
Rumford led the World Super 6 Perth from start to finish last year, dominating in the opening three rounds of stroke play before blitzing the field in the final-round match play format.
The 40-year-old picked up where he left off on Thursday morning, making 10 birdies and just two bogeys in a sizzling round.
"There seems to be some sort of home-course advantage," Rumford said.
"I just think some golf courses suit your eye and others don't.
"Generally you'll find as a trend that a lot of players go back to the same venue and play well and this is one of them for me."
West Australian Jason Scrivener shot a promising five-under 67 to be tied for fourth in a big group also featuring world No.53. Thai Kiradech Aphibarnrat and South Australian Wade Ormsby.
Cult hero Andrew 'Beef' Johnston finished one-over after dropping five shots on the par-four second.
One-time major winner Danny Willett faces a huge battle to make the cut after finishing four-over 76.
After three rounds of traditional stroke play, the top 24 players will qualify for the final-round match play component, where they go head-to-head in a series of six-hole shootouts.
Rumford said his early lead meant little, with the top 24 the goal.
The top eight players after three rounds earn a bye in the first stage of match play.
Westwood, who missed the cut in his first two tournaments of the year before finishing tied for 11th in Malaysia last week, was content with his opening round in Perth.
"I don't think this is a tournament where you want to be playing catch up really," he said.
"You want to get yourself in the mix and try and cruise through the second and third days and get into that top 24."
Scrivener was happy with his round but felt he could have joined Rumford at eight-under if some things went his way.
"It was a funny day. I got off to a slow start. I saw what Brett was doing up front, which made it feel even worse," Scrivener said.
"But happy with it. It was as easy as it's ever going to play out here."