In fact, they got worse. The Dolphins won the AFC East two years ago. They went 7-9 last season but still had playoff hopes entering their finale.
The best they can do this year is 8-8. They were eliminated from playoff contention two weeks ago.
At his weekly news conference, Marshall was asked for his thoughts on the team's direction. He didn't hesitate to endorse head coach Tony Sparano's return for next year, but withheld any praise for quarterback Chad Henne or offensive coordinator Dan Henning.
Marshall said he came to Miami with aspirations he and Henne would achieve greatness.
"I'm not sure," Marshall said. "We had some opportunities this year to do that, and we didn't get it done. I guess we have to evaluate what we've done this year and see if we can improve and see if can become good before we become great."
Marshall joined the Dolphins with three straight 100-reception campaigns and 10 touchdowns last year.
With one game left, he has 81 catches and three touchdowns.
"Just got to let it go, you know?" Marshall said in a story by South Florida Sun-Sentinel reporter Mike Berardino. "Don't worry about the consequences. Just throw it up and see what happens. Throw a pick or whatever. Let's live and die by it.
"We want to play smart football, and we want to be consistent, but at the same time if you look at what teams do with Roddy White, Calvin Johnson, that's something I'm used to in the past, just guys believing in me.
"You make plays like that, you build confidence in each other. You get a little snowball effect. We didn't get that this year, and it's disappointing."