The legal tussle between Sauber and Giedo van der Garde continues to rumble on after the Formula 1 team lodged an official appeal against the Supreme Court's decision to rule in the Dutch driver's favour.

The appeal will be heard on Thursday (12th March) in Victoria, Australia, just hours day ahead of Free Practice one which begins in Albert Park at 12.30PM on Friday.

Mr Justice Croft ruled van der Garde had been unfairly dismissed after he had acted as Sauber's F1 test driver in 2014 but was not retained by Sauber for the new season despite assurances.

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However, shortly after the decision Sauber appealed and the case was then heard by three different judges. The appeal hearing will continue tomorrow with a decision expected less than 24 hours before the team commences its 2015 Formula 1 season.

Sauber CEO and team principal Monisha Kaltenborn has declared the Dutch driver will not drive either of the team's C34 cars during Friday's free practice sessions, citing safety concerns. Therefore current drivers Marcus Ericsson and Felipe Nasr are expected in the cockpits but a decision on who will contest the race has been delayed.

"We are disappointed with this decision and now need to take time to understand what it means and the impact it will have on the start of our season," Kaltenborn said via a team statement. "What we cannot do is jeopardise the safety of our team, or any other driver on the track, by having an unprepared driver in a car that has now been tailored to two other assigned drivers."

The case continues.