Olympic officials remain hopeful Lleyton Hewitt can avoid hip surgery to spearhead Australia's tennis campaign at the Beijing Games next month.
Hewitt has been named in an eight-person Australian line-up which on current form could match or better the country's previous best Olympic medal tennis tally.
A Tennis Australia spokesman said Hewitt, who was a fourth round Wimbledon casualty at the hands of world No.1 Roger Federer, needed to seek further medical advice on his troublesome hip problem.
"At this stage I believe he's going to get it checked out," the spokesman said.
"But he hasn't pulled out as yet so we assume he's playing.
"We do know he's very keen to play."
Fifty-six male and female players gained direct entry based on their singles rankings immediately after last month's French Open with 17 of the men's top 20 and 18 of the women's top 20 confirmed for the Beijing tournament which will run from August 10-17.
Hewitt, ranked world No.27, is the only Australian entry to the men's singles, although Chris Guccione (ranked 77) is likely to play as he is first in line should another player withdraw.
Those two will also play doubles, while Paul Hanley joins Jordan Kerr in Australia's other men's doubles team.
Australia has won a medal at each Olympics since the sport was re-introduced in 1988.
The country's only singles medal came in Athens in 2004 through Alicia Molik, who won bronze.
The only tennis gold won by Australia went to Mark Woodforde and Todd Woodbridge in 1996 in Atlanta.
While Hewitt playing in Australia colours is always a medal chance, the country's best hopes lie with the women.
Samantha Stosur and Casey Dellacqua have been included in the women's singles, as has former world No.8 Molik, who received a wildcard entry earlier this week.
Dellacqua will partner Molik in the doubles and Stosur will join Rennae Stubbs in the other women's doubles team.
Stosur has made it through to the semi-finals of women's doubles and the mixed doubles at Wimbledon.
The in-form Dellacqua, currently ranked world No.43, is also through to the Wimbledon women's doubles semis.
Dellacqua, who made the fourth round in singles at the Australian Open and the third round at the French, was a finalist in the women's doubles at Roland Garros.
Australian Olympic squad: Men: Lleyton Hewitt (singles and doubles), Chris Guccione, Paul Hanley, Jordan Kerr (doubles only). Women: Casey Dellacqua, Samantha Stosur, Alicia Molik (singles and doubles), Rennae Stubbs (doubles only).
