Marshall's latest controversial comment came in the form of a tweet Thursday night when he called out the media and guaranteed the 0-6 Dolphins would beat the New York Giants Sunday afternoon -- well, sort of.
"To: Media When we win Sunday please don't say the Giants didn't take us serious." Marshall tweeted from his verified Twitter account.
Notice he didn't say "if."
The Giants organization certainly took notice of Marshall's message, re-tweeting it to their 92,500-plus followers.
Giants players, however, paid little attention to the tweet.
"He's entitled to his own opinion. He can guarantee whatever he wants to guarantee. Is it going to happen? That remains to be seen," said Osi Umenyiora, who initially dismissed Marshall's words.
"We don't pay any attention that that. We've got bigger fish to fry, man," he later added.
There was no pun intended with Miami in town, but plenty of truth in Umenyiora's statement.
The Giants play the Patriots (5-1), 49ers (5-1), Eagles (2-4), Saints (5-2) and Packers (7-0) in the five games following Sunday's tilt against winless Miami.
Maybe that tough stretch of the schedule is one reason Marshall's words didn't draw much of a rebuke from the Giants.
"That's what he's supposed to say," safety Deon Grant said. "If he doesn't think they're going to win, he doesn't need to be playing football."
Added safety Antrel Rolle: "If that's the way he feels that the way he feels. The game's still gotta be played on Sunday. We're just going to go in and play our game as best we can."
This isn't the first time Marshall has sparked controversy. Before Miami's 24-6 Week 6 loss to the New York Jets, Marshall claimed he was going to get in a fight with Bart Scott or Antonio Cromartie and get kicked out by the second quarter.
But Marshall never did follow through with his "plan," and later said it was all a joke.
The Giants have spoken this week about how they are wary of the Dolphins and how they don't want to be the first team this season to lose to Miami.
"They've played in a lot of tight games," quarterback Eli Manning said earlier this week. "They could easily have several wins to their record right now. A lot of games coming into the fourth quarter and the opposing team just made some big plays to get wins. They play extremely hard. They have talent on both sides, and it's just a matter of we have to play smart football and know that we have to have a great day of execution and go out there and play well."
Said linebacker Michael Boley: "Right now, their backs are against the wall, so it's tough to go against a team like that.
"(This game is) a stepping stone to where we want to be. For us, right now we can't afford to let up."
Mike Mazzeo and Ian Begley are frequent contributors to ESPNNewYork.com.