Brandon Marshall believes he might have been able to stop the Giants’ big postseason misadventure before it even left the dock.

Appearing on NFL Network’s “Good Morning Football” on Thursday, he was asked about his new teammates’ infamous trip to Miami the week before the playoff game in Green Bay. Photos surfaced on social media of Odell Beckham Jr., Victor Cruz, Sterling Shepard and Roger Lewis Jr. partying on a yacht and dancing the night away with celebrities.

Marshall’s first instinct was to say he would have put the kibosh on the getaway.

“You know what? No, it doesn’t happen,” Marshall said immediately when asked if he would have stopped it had he been on the team. But he quickly recalculated.

“I can’t say that,” he adjusted. “Everyone is different. But I would have been against that, in part because of my pains. I’ve been in the league so long, I’ve never made the playoffs. So for me, I’m a guy, I’m in year 11, and I’m all in because I know this opportunity doesn’t come around often . . . I would have been against it, but I don’t think it had anything to do with their performance on the Sunday.”

The Giants lost to the Packers in the wild-card game, and Beckham and Shepard each dropped key passes early in the contest.

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Marshall is correct in changing his tone. It’s very easy for players to say they could have stopped these things from happening. In 2015, for example, the big Beckham brouhaha was over his behavior in the Panthers game against cornerback Josh Norman. Cruz, in 2016, said had he been able to play and been on the sideline, he could have defused the situation. Maybe he could have. But a year later Cruz was right beside Beckham on the yacht.

Now Cruz is gone and Marshall is in.

How big of a difference that makes regarding extra-curricular decisions made by the Giants’ receivers remains to be seen.

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Marshall also spoke about his role in the Giants offense on “Good Morning Football,” and in particular how Beckham will handle possibly having fewer catches.

“He’s going to get the ball,” Marshall said of Beckham. “I’m the number two . . . It’s a one and two number twos, myself and Sterling Shepard. We can’t forget about our young cat, who has a high ceiling.”

Marshall said taking a back seat to Beckham is what drew him to the Giants.

“At this point in my career, I still believe I’m a number one receiver and you can’t tell me different,” he said. “But I think one thing these teams I’ve been on have always had is a mix of spreading the ball around. [I] had Alshon Jeffery on the other side of myself [in Chicago]. Had Eddie Royal going back to my days in Denver, he had 91 catches, I had 100 catches. Eric Decker. We had a monster year our first year with the New York Jets. So it was extremely important for me to go to a place where, I didn’t want to be the number one. I wanted a dominant number one. And Odell is the biggest superstar in our business and obviously, we have a great defense so it will be awesome to see all those guys grow in year two all together.”