Adam Scott had a share of the early lead Thursday in his Australian Masters title defense.
The second-ranked Australian star shot a 4-under 67 at Royal Melbourne, making a bogey on the par-4 eighth — his 17th hole of the day — to drop into a tie for the lead with Germany's Max Kieffer.
Scott won the Australian PGA on Sunday at Royal Pines in his first home event since winning the Masters at Augusta National. He will team with Jason Day for Australia next week in the World Cup, also at Royal Melbourne, then play the Australian Open the following week at Royal Sydney.
American Matt Kuchar opened with a 71.
Australia's Jarrod Lyle, returning to play after his second bout with leukemia, was in the afternoon session.