Michael Long used a rare albatross, or double-eagle, on the par-5 15th hole Thursday to shoot a 6-under-par 66. He is tied for second place with Bradley Iles at Royal Adelaide Golf Club.
Long had 189 yards for his second shot at 15, which was his sixth hole in the opening round. He used a 6-iron and the ball disappeared in the cup to vault him up the leaderboard.
'When I hit it, I felt I just slightly missed it,' admitted Long. 'So I'm not all that happy with it in the air. I'm thinking it's short and to my surprise, it landed 10 feet short and rolls in the hole. I shut my mouth pretty quickly.'
Peter Senior and Adam Crawford are knotted in fourth place at 5-under-par 67.
Flint flew out of the gate on Thursday with three birdies and an eagle in his first four holes. He wasted little time in matching Long in the lead at 6-under when Flint birdied the par-4 eighth.
At the par-3 12th, Flint knocked his tee ball close and kicked in the short birdie putt to take sole possession of the lead. He drained a 20-foot birdie putt on 18 to post a two-stroke margin after round one.
Long nearly holed his second shot with a 6-iron at the par-5 second, but settled for an eagle. He added a birdie at the fourth to get into the clubhouse at minus-six.
'From where I was I really thought it had gone into the hole, but it stopped a foot and half short,' said Long, referring to his approach at No. 2. 'So it was almost a couple of albatrosses which would've really made my day.'
Iles started on the back nine Thursday and struggled with bogeys at 12 and 14. He rebounded with three birdies in a row from the 15th to make the turn at 1-under par.
He caught fire on his back nine with five birdies, including three in his last five holes.
Kevin Stadler, who won last week's Johnnie Walker Classic on the European Tour, began the tournament with a 4-under-par 68. He shares sixth place with Brandt Snedeker, Peter Tomasulo, Hunter Haas and John Merrick.
The Golf Channel will air all four rounds from Australia beginning Thursday at 11 a.m. (ET).