USA TODAY Sports
The injury to Knowshon Moreno makes running back a major question mark for the Dolphins.
As dominant as the defensive line is expected to be, it's a lot more difficult to predict the performance of some other units. There's simply no denying that the linebackers, offensive line and running backs have their fair share of question marks.
Admittedly, much of the concerns about the offensive line and running back positions have to do with the injuries to Pouncey and Moreno.
There's no way to know how quickly an offensive line that just lost a Pro Bowl center and is playing with five new starters is going to jell and develop.
There's also no way to know how the Dolphins running backs are going to perform if Moreno has to miss any significant amount of time.
Lamar Miller seems primed for a breakout season but after him, the depth chart is either filled with unknowns (Mike Gillislee, Damien Williams, Orleans Darkwa) or players that can't be counted on (Daniel Thomas, Marcus Thigpen).
The best hope for these two units is that Moreno and Pouncey can come back as quickly as possible and be counted on throughout the season.
However, the same hope can't be said for the linebackers.
Despite being the weakest unit on the Dolphins defense last season, not much has changed at the linebacker position over the offseason. Dannell Ellerbe and Philip Wheeler both still seem locked in for major roles this season, with the only real change being Koa Misi switching to a new position in the middle.
Jelani Jenkins is also expected to get much more of a role this season, along with fifth-round draft pick Jordan Tripp.
Either way, there's no way to confidently predict any type of success from this unit until we actually see it on the field.