The NFL is moving quickly in hopes of reversing a federal judge's decision that blocked the league's six-game suspension of Dallas running back Ezekiel Elliott over a domestic violence case in Ohio.

The league on Monday asked the judge who ruled in Elliott's favour to stop the preliminary injunction that cleared last year's NFL rushing leader to play while the case is in court. A notice of appeal was also filed with the 5th U.S. Circuit Court of Appeals in New Orleans.

The NFL's latest filings came about 12 hours after Elliott rushed for 104 yards in the Cowboys' 19-3 win over the New York Giants at home Sunday night.

"Just relieved from the fact that I finally get a fair trial," Elliott said after the game in his first public comments since before the Cowboys reported for training camp in July. "I finally get a chance to prove my innocence. And I'm just happy I'm able to be with these guys for as long as it's permitted and just not having to miss time and not being away from them."

The 22-year-old Elliott was suspended by Commissioner Roger Goodell last month, and attorneys with the NFL Players' Association contended that Elliott didn't get a fair hearing in an appeal that was denied. Elliott had already been cleared to play in the season opener when U.S. District Judge Amos Mazzant granted a temporary restraining order and injunction blocking the suspension Friday.

The case could play out for months.

Elliott could play entire season

New England quarterback Tom Brady's four-game suspension over "Deflategate" was delayed by a year when a federal judge ruled in his favour. Brady served the suspension to start last season after an appeals court reversed the ruling and backed Goodell's authority to suspend him.

If Mazzant denies the emergency request to put his own ruling on hold pending further hearings, the NFL could make a similar argument to the appeals court in hopes of getting a hearing within days.

Without an NFL win on an emergency request in either court, the timeline could mean that Elliott is clear to play his entire second season after he led the league in rushing as a rookie.

"It may be difficult for the NFL to convince the 5th Circuit that this is truly an emergency," said Gabe Feldman, director of the sports law program at Tulane University Law School. "The argument here is that the NFL could later enforce the suspension."

Ohio prosecutors didn't press charges

Elliott was suspended by Goodell in August after the league concluded he had several physical confrontations last summer with Tiffany Thompson, a former girlfriend. Prosecutors in Columbus, Ohio, decided about a year ago not to pursue the case in the city where Elliott starred for Ohio State, citing conflicting evidence.

The NFL kept its investigation open, and said its conclusions were based on photographs, text messages and other electronic evidence.

The NFL has argued that it acted within the parameters of a labour agreement that gives Goodell broad authority to suspend players. The league said the appeal process was consistent with its personal conduct policy.

"As far as the argument to the court of appeals, we think the scope and review in labour arbitration is very limited and we believe the judge went well beyond what is permitted as far as scope," NFL vice-president of communications Joe Lockhart said.

'It's really out of my hands'

Mazzant's ruling took aim at appeal hearing officer Harold Henderson and the NFL, saying decisions not to allow Goodell and Thompson to testify at the appeal were among several factors unfair to Elliott. The running back denied the allegations under oath during the appeal.

The judge also faulted the league for what he saw as several efforts to conceal the opinion of co-lead investigator Kia Roberts. She testified at the appeal that she didn't think Thompson was credible and didn't support any punishment for Elliott.

Three years ago, the NFL stiffened penalties in domestic violence cases after getting sharply criticized for its handling of former Baltimore running back Ray Rice.

Elliott had 1,631 yards rushing last season, helping Dallas to the best record in the NFC at 13-3. He had another 36 yards receiving in the opener against the Giants as the Cowboys beat the NFC East rival that swept them last season.

"I've kind of just stopped worrying about it because it's really out of my hands at this point," Elliott said. "I'm just really focused right now at being the running back I need to be for this team to be successful so we can accomplish what we want to."