Australia's Peter Luczak has had a cortisone injection in a bid to overcome a hip and hamstring injury ahead of the French Open.

As the drug numbs pain, there is a chance of aggravating the injury without realising - but it was a risk Luczak was willing to take for the tournament which starts on Sunday.

"Cortisone is sort of the last thing you want to do and I was willing to do that for the French Open," Luczak told AAP.

"I would love to do well here, as I'm getting older, these are tournaments which are most important to me, the grand slams and Davis Cups."

While a scan showed no tears, just general swelling, the injury forced the 28-year-old from Melbourne out of this week's tournament in Casablanca.

But he is now moving freely.

"I could be doing some further damage, but the doctor I talked to said it was quite low risk where I had the cortisone," he said.

Luczak faces Austrian Jurgen Melzer, who is ranked 10 places higher at No.103, and will be looking to avoid a repeat of last year's first-round capitulation to Swede Jonas Bjorkman, who fought back from two sets to love down.

"Last year I had a lot of matches, I was feeling great, and I ended up losing in the first round, so hopefully this has been a little blessing in disguise, having the last week off," Luczak said.

"If I get in a situation where I'm two sets to love up, I'll know it's not over until it's over.

"Hopefully I can learn from that heartbreaker I had last year."

Luczak is among a number of Australians who have had less-than-ideal preparation for the clay courts of Roland Garros.

Lleyton Hewitt has not played a competitive match since the Davis Cup win over Thailand in April and his last appearance on the ATP tour was at the Miami Masters in late March because of a hip injury.

But, like Luczak, he is doing everything he can to be ready.

Today, Hewitt had a tough 90-minute practice session with eighth-seeded Frenchman Richard Gasquet.

The No.25 seed appeared to be moving well and did not show any sign of discomfort.

He is scheduled to meet another Frenchman, Nicolas Mahut, in the opening round.

The pair have played once before, in Sydney earlier this year, with Hewitt winning in straight sets.

Chris Guccione received some tough luck in the draw.

The 22-year-old Australian, ranked 70th in the world, faces 148th-ranked French qualifier Nicolas Devilder in the first round but is likely to meet Rafael Nadal, the world No.2 who is aiming for his fourth consecutive French Open title, in the second.

Jarmila Gajdosova, who is still considered Slovakian on the international circuit while she awaits Australian citizenship, made it through qualifying to set up a first-round encounter with French wildcard entrant Olivia Sanchez.

Gajdosova, whose ranking has slipped from inside the top-100 to 197 after a prolonged period of injury and illness, won her only meeting with the world No.117, on clay in 2006.

"I grew up on clay, so I don't mind playing on the surface," Gajdosova said, adding it would mean a lot to finally have an Australian passport after being granted permanent residency.

"I hope I'm going to get it soon, not just to play Fed Cup but to be in the grand slams representing Australia," she said.