Perth WA, Australia, 6 January 2015 | AAP

There have already been four withdrawals and Australian Matt Ebden is in danger of becoming the fifth casualty if he fails to recover in time for Wednesday night’s Hopman Cup clash with France.

Ebden injured his left calf during his three-set loss to Poland’s Jerzy Janowicz on Sunday night.

The 27-year-old was unable to front up for the mixed doubles, but he remains a chance to return for his singles clash with Frenchman Benoit Paire on Wednesday night.

Should Ebden be unable to play, 22-year-old Queenslander Ben Mitchell will take his place as Australia attempt to bounce back from their 3-0 loss to Poland.

The mixed-teams tournament had four players withdraw before the start of the event, with Frenchman Jo-Wilfried Tsonga, rising Australian star Nick Kyrgios, American Jack Sock and Radek Stepanek struck down by injury.

Organisers are hopeful Andy Murray, who is battling a sore left shoulder, doesn’t join that group.

Meanwhile, West Australian Casey Dellacqua will be aiming to rebound from her straight sets loss to Agnieszka Radwanska when she takes on world No.18 Alize Cornet on Wednesday night.

Dellacqua was ravaged by foot and shoulder problems a few years ago, but the 29-year-old is enjoying her injury-free run of late and is looking forward to the Australian Open.

“It’s such a positive for me to be healthy,” the world No.29 said.

“It feels great to be out there and to be able to play freely and move and just find good court position without worrying about little niggles.

“I have had a great off-season and I have never had that opportunity (previously).

“I am always playing lower level tournaments or play-offs, so it’s a real different lead up.”