The NFL received a big blow on Tuesday after the $765m concussion settlement reached between them and former players failed to receive approval in the U.S District Court.
NFL Network's Albert Breer confirmed the news on Twitter.
It's a somewhat expected result after the NFL originally agreed the settlement with more than 4,500 former players in August with regards to a number of concussion-related injuries back in late August.
The $765m settlement was deemed by many as not enough with the players originally seeking more than $2bn to settle before agreeing to the significantly smaller sum.
But, according to Breer, the judge has not thrown out the settlement and has asked for a third party to research the numbers to make sure it's all financially sound.
"We respect Judge Brody's request for additional information as a step towards preliminary approval," NFL spokesman Greg Aiello said in a statement. "We will work with the plaintiffs' attorneys to supply that information promptly to the court and special master. We are confident that the settlement is fair and adequate, and look forward to demonstrating that to the court."
The settlement is believed to be split by giving ex-players $675m, with $10m going towards research and education and the remaining $75m going towards medical exams.
The awardings to players were worked out based on their age and severity of their condition.
Someone who retired young with Lou Gehrig's disease would get $5 million while those with severe dementia would get $3m. At the other end of the scale, an 80-year-old with early dementia stands to get $25,000.