Dutch driver Giedo van der Garde has launched legal action against the Sauber Formula One team, demanding to be on the starting grid of the Australian Grand Prix.
The Dutchman, who was the team's reserve driver for the 2014 season, is claiming he was unfairly dismissed by the Swiss squad.
He has now begun legal action in the Victorian Supreme Court and is seeking to be on the grid when the season kicks off next week.
"In early November 2014, Mr van de Garde was informed by Sauber's Chief Executive Officer, Ms Monisha Kaltenborn, that Sauber's two seats had been given to other drivers and that, as a consequence, Mr van der Garde would not have a place as a driver in the team in 2015," said documents logged by the driver, published by Australian media.
"The Respondent was ordered to refrain from taking any action the effect of which would be to deprive Mr van der Garde of his entitlement to participate in the 2015 Formula One Season as one of Sauber's two nominated race drivers."
Sauber signed Marcus Ericsson and Felipe Nasr for the 2015 season, with Italian Raffaele Marciello as its reserve.
Australian media reports van der Garde is seeking an urgent hearing on Monday, just four days before the start of Friday practice.