Fiji is threatening to take the Commonwealth Games Federation (CGF) to the Court of Arbitration for Sport (CAS) over the ban on their athletes competing in the games next year.
Fiji was suspended from the Commonwealth on September 1 after a pledge by the military-led government to hold elections was not acted on.
The Commonwealth Heads of Governments Meeting (CHOGM) in Port-of-Spain last month decided not to allow Fiji to take part in the New Delhi games.
A proposal from Malaysia that the suspension from the Commonwealth not prevent Fiji from entering athletes in the games received little support after Prime Minister John Key spoke against it.
Mr Key told the New Zealand Herald that he had said to other leaders that "it would undermine the Commonwealth brand and you'll undermine the Pacific leaders who are family trying to stick together to resolve this issue".
Nigeria was banned from the Commonwealth Games after it was suspended in 1995 but was re-admitted in 1999.
But Fiji's Sports and National Olympic Committee will make a last ditch attempt to get its sevens, netball and athletics teams to the games.
Committee president Vidhya Lakhan told the Fiji Times that CHOGM's stance was "political interference in sports".
"We will now take our case to the Court of Arbitration of Sport".
"Politicians are playing their game, and of course their intention is to deprive athletes of opportunities," he said.
Fiji's biggest hopes for a medal in New Delhi next year would be its rugby sevens team, which has won a medal in every event since the sport was introduced to the Commonwealth Games in Kuala Lumpur in 1998.
