The opener seems like a foregone conclusion. Wide receiver Brandon Marshall will be on the field Sunday night when the New York Giants play the Dallas Cowboys despite suffering a shoulder injury several weeks back against the Cleveland Browns.

Related players: Odell Beckham

Marshall returned to practice last week and was out there again on Monday so he seems like he'll be good to go. Beckham, on the other hand, is very much in doubt so Marshall could see a lot more attention from both QB Eli Manning and the Dallas defense in Week 1.

The New York Giants returned Monday as they began preparation for their season opener against the Dallas Cowboys and star wide receiver Odell Beckham Jr. still wasn't practicing. He rode a stationary bike for a few minutes as his teammates began to work. He went inside the team's fieldhouse with a trainer a few minutes later.

The story went on to say it's been two weeks since Beckham injured his ankle during a preseason game against the Cleveland Browns. The Giants have been tight-lipped about his progress. Beckham had not done any running or cutting as of late last week, according to a source. He was on the field prior to Thursday's preseason finale against the New England Patriots but did very light work. He caught some passes from an equipment manager while doing some light jogging. Owners now have to start thinking about if Beckham does play, could he be the dreaded decoy.

Wide receiver Odell Beckham Jr. remains absent from New York Giants practice but is "improving," according to coach Ben McAdoo. The team is hopeful Beckham will be available for the season opener on Sept. 10 against the Dallas Cowboys as he recovers from an ankle injury.

He hasn't been outside at practice since, not even to work on the side with a trainer. He's in a race against time to be ready for the opener, the story said. While McAdoo is hopeful, the story says it's more like wishful thinking and Beckham hasn't even jogged to this point.

The Giants got one of their two injured wide receivers back at practice on Monday.

Brandon Marshall has been out of practice since leaving last Monday night’s game against the Browns to get X-rays on his shoulder. Giants coach Ben McAdoo provided little information about Marshall’s status, confirming only that Marshall has “a shoulder” and that the team would see how he responded to treatment.

Related players: Odell Beckham

Meanwhile, other reports stated McAdoo said Beckham's ankle is "improving" but he wasn't at practice on Monday.

Odell Beckham was at the game but wasn’t on the sideline with his teammates. He did not even make it out for the early pregame warmups.

“We thought it was best for Odell to get treatment and not be standing out there,” HC Ben McAdoo said.

There were reports that Beckham was going to have laser cell treatments on Friday. McAdoo noted Beckham was with the team Saturday, and if this was something being done, the coach was unaware.

Beckham is in a race to be ready for the season opener on Sept. 10, the story said.

Odell Beckham Jr.'s ankle injury could potentially keep the New York Giants wide receiver out of the season opener, sources told ESPN's Jordan Raanan and Dan Graziano.

The Giants open their season on the road on Sept. 10 against the Dallas Cowboys.

It's "not out of the question he could miss a week or two of the regular season," according to one source.

We have adjusted Beckham's projections to assume one missed game. This has put him in a virtual tie with A.J. Green in PPR formats, though he remains the No. 3 receiver in standard leagues. Owners who draft Beckham could nab Sterling Shepard in the later rounds as a Plan B. The ankle injury doesn't sound serious, but the regular season is fast approaching.

Three-time Pro Bowl wide receiver Odell Beckham Jr. is being listed as day to day with a sprained left ankle.

X-Rays on the shoulder of fellow wide receiver Brandon Marshall were also negative, coach Ben McAdoo said. The 33-year-old veteran also is being listed as day to day.

Speaking on a conference call Tuesday, McAdoo didn’t give many details about Beckham’s ankle, refusing to say whether the injury in a preseason loss to Cleveland on Monday night was a high ankle sprain, which usually takes longer to recover from. McAdoo said the team will wait to see how Beckham responds to treatment. An MRI on the ankle was negative. Beckham expressed optimism about playing in the opener, but players are often too optimistic about their recovery timelines. Beckham did return to the sideline after the injury diagnosis, and he wasn't on crutches or in a walking boot, which is an indicator that the sprain is minor. He should be available in Week 1.

Odell Beckham Jr. will have an MRI exam taken of his sprained left ankle early Tuesday afternoon, part of the “further evaluation’’ the Giants stated would happen after the star receiver was forced out of Monday night’s 10-6 preseason loss to the Browns in Cleveland.

X-rays taken at FirstEnergy Stadium led to the diagnosis of a sprained ankle, and now the Giants want to be sure there is nothing more going on with Beckham’s ankle. This is standard operating procedure and not an indication that something is feared to be more seriously wrong with Beckham, the story said.