Update, Tuesday 12:20 p.m.: The NFLPA has filed its response to the NFL's motion to dismiss Cowboys running back Ezekiel Elliott and the NFL Players Association's lawsuit. In the filing, the players association says arbitrator Harold Henderson has informed both parties that he intends to issue a decision on Elliott's appeal by end of business day Tuesday.

Latest Elliott filing: If he's forced to wait on ruling, no court would have opportunity to stop Elliott’s unlawful suspension in its tracks — Kate Hairopoulos (@khairopoulos) September 5, 2017

Elliott filing: Arbitrator Henderson has now advised the parties that he intends to issue his decision by the close of business today — Kate Hairopoulos (@khairopoulos) September 5, 2017

Here's the full filing from Tuesday:

Original post, Monday night:The NFL, as expected, filed a motion to dismiss Cowboys running back Ezekiel Elliott's and the NFL Players Association's lawsuit in U.S. District Court on Monday night. The league also filed an opposition to Elliott's pursuit of a preliminary injunction. A court hearing on the matter is scheduled for 5 p.m. Tuesday in Sherman, Texas.

Elliott has yet to receive a decision on his appeal of his six-game suspension through the NFL disciplinary process. Arbitrator Harold Henderson is expected to rule soon, and while it's considered unlikely, he could still reduce or vacate the suspension. The wait for a judgment didn't prevent Elliott and his representatives from filing suit late Thursday.

If Henderson doesn't rule by 3 p.m. Tuesday, Elliott will be able to play Sunday. The NFL allows for this since his appeal would still be pending, and Elliott and the Cowboys need to be able to game-plan for the Giants.

But if the lawsuit is dismissed later Tuesday, it could mean the whole cycle starts over again once Henderson finally announces his decision.

That would lead to both sides racing to find favorable jurisdictions, probably in Texas for Elliott and the Southern District of New York for the NFL, once Henderson's ruling is ultimately announced.

"Elliott will be active for Week 1, and that would undercut the NFLPA's argument that there's an immediate need," sports law expert Daniel Wallach said. "The delay in Henderson's ruling would obviate the need for immediate court action and provide the NFL with an additional argument."

The league's responses call out the NFLPA for the timing of its filing as well as the legitimacy of its standing.

"The NFLPA claims that it is likely to succeed in its claim that the underlying proceeding was 'fundamentally unfair' in light of certain procedural and evidentiary rulings by the Arbitrator," the NFL's filing reads. "But this is hardly the first time the NFLPA has made this argument. Courts around the country have consistently and squarely rejected it, along with every other attempt by petitioners to second-guess arbitration decisions upholding NFL player discipline."

The league also questions how the players association can request a restraining order enjoining "something that does not even exist."

SportsDay Cowboys insider Kate Hairopoulos has your updates on the league's response, including what it says is the NFLPA's inability to demonstrate that Elliott will suffer "irreparable" harm, or that the harms weigh in his favor.

NFL files documents to respond to Elliott's injunction request. Includes motion to dismiss, as expected. — Kate Hairopoulos (@khairopoulos) September 5, 2017

NFL on Elliott's injunction motion: Nor can the NFLPA demonstrate that Ezekiel Elliott will suffer “irreparable” harm, or that the harms... — Kate Hairopoulos (@khairopoulos) September 5, 2017

weigh in his favor. Any harm is compensable by money damages (lost wages) ,has already occurred (reputational harm),... — Kate Hairopoulos (@khairopoulos) September 5, 2017

or is purely speculative (whether the Dallas Cowboys

will make the playoffs). — Kate Hairopoulos (@khairopoulos) September 5, 2017

NFL: NFLPA lacks standing to seek a contingent order preemptively challenging award that has not yet (and may never) cause Elliott harm — Kate Hairopoulos (@khairopoulos) September 5, 2017

Here are the NFL's full filings:

More on Ezekiel Elliott case

Q&A: What to watch Tuesday in Ezekiel Elliott's efforts to remain on the Cowboys field this season

Breaking down deciding factors, timeline for next update on Cowboys RB Ezekiel Elliott serving suspension

Jason Garrett: Ezekiel Elliott 'will practice until someone tells him not to'

Read Ezekiel Elliott's lawsuit, including full interview with accuser, NFL report