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We know that Mike Wallace, Brian Hartline and Charles Clay will be a big part of the Dolphins offense in 2014. Beyond that, there is some doubt.
Will rookie wide receiver Jarvis Landry get opportunities with the first team? Since being drafted in the second round in May, Landry has thoroughly impressed his teammates with his athleticism and intelligence.
"He's smart, he does a good job catching the football," said Dolphins receiver Brian Hartline, via CBS Miami. "On the mental platform he operates like a second- or third-year player, so he's definitely a smart guy."
Perhaps those reps will go to third-year wideout Rishard Matthews, who according to Joe Philbin is "without a doubt" having a good camp. Matthews showed up in a big way last year when Brandon Gibson went down, hauling in 41 receptions for 448 yards and two scores. With Gibson, Armon Binns and Damian Williams all vying for roster spots, though, Matthews should be looking over his shoulder at all times.
There's also a bit of uncertainty at running back. As mentioned earlier, we still don't know how Moreno will factor into the backfield, but what about Lamar Miller and Daniel Thomas? The two backs struggled mightily for Miami in 2013, in both the running and passing game, yielding constant pressure on Tannehill and failing to capitalize on their (admittedly minimal) holes when running the ball.
As is always the case in the first preseason game, we won't get a full grasp of what's in store for the Dolphins offense tonight, but we could get a glimpse.