South African Louis Oosthuizen is among a quartet of early pacesetters at the inaugural LIV Golf tournament in Adelaide.
Oosthuizen is on a hot streak of four consecutive birdies at the Grange Golf Club to sit at four under through six holes.
He shares the early lead after the shotgun start with fellow South African Charl Schwartzel, Zimbabwean Scott Vincent and New Zealander Danny Lee.
Phil Mickelsen and Sergio Garcia are among a batch at three under while home favourite Cam Smith is one under.
Smith captains the all-Australian team, Rippers GC, featuring Matt Jones, who is two under, but compatriots Jed Morgan (one over) and Marc Leishman (two over) have failed to make early inroads.
American Shiwan Kim is having a torrid time - he posted a 10 on the par-5 7th hole and is seven over.
American drawcard Dustin Johnson is one under at a tournament which struck early spectator troubles - many of the 35,000-strong sell-out crowd missed the start because of massive queues to enter the sandbelt course in Adelaide's west.
Thousands of fans were in a line at least a kilometre long outside the one entrance gate when players teed off.
Johnson's team, Aces GC, top the team leaderboard entering the tournament, the first LIV event on Australian soil.
Charles Howell III, who won the season-opening tournament, leads overall standings from Brooks Koepka, who won at the last LIV event.
The individual winner at the Grange will collect $US4 million ($A6m) of the total purse of $US20 million ($A30m).
