Thomas Bjorn and Kevin Streelman are the joint leaders at the World Cup of Golf in Melbourne after the first round of action.
Both players carded five-under-par 66s on Thursday, while Choi Kyung-Ju, Martin Laird and Stuart Manley are tied on third place on 67.
USA's Streelman birdied five of the first six holes on the back nine to surge ahead, but bogeyed the last two holes to allow Bjorn to catch up.
The Dane started the first round on a disappointing note, four-putting in the fourth, but improved as the day went on to take a share of the lead heading into round two on Friday.
