Lamar Miller is set to take Reggie Bush's former role as the primary running back for the Miami Dolphins, and he will enjoy greater success than his predecessor for a number of reasons that do not even deal with talent level.
One major improvement is simply with the offensive line. Adding Tyson Clabo to the right side, who is a fantastic run blocker, will make a big difference.
On the inside, I expect Richie Incognito to start at guard along with John Jerry if he's healthy, or Dallas Thomas if he's not. Either way, that's a solid guard tandem that will help to open holes.
In addition to that, Jonathan Martin and Mike Pouncey are young guys who will continue getting better. Pouncey is already one of the best, if not the best, centers in the game.
Miller will also greatly benefit from the improved passing game.
Ryan Tannehill had a solid rookie season, and all signs point to him continuing to develop and improve as a passer and leader. His progression will no doubt aid Miller.
The new and greatly improved receiving corps should also be a big boost to Miller. Mike Wallace will help stretch the field, while Dustin Keller and Brandon Gibson take advantage of the vast seams that should be open around the middle.
A second season with the same coaching staff, mainly head coach Joe Philbin and offensive coordinator Mike Sherman, should also make the entire offense run smoother as a whole.
The up-tempo style that they are trying to implement should make the passing attack more deadly, therefore opening up the running game; the style itself also molds well with how Miller runs.
Miller is a smaller, explosive back who can burst through holes and make people miss once he gets into the open field. If defenses start to tire from the fast pace, Miller will make them pay.
Lastly, the addition of two particular rookies should have a major impact on Miller. Mike Gillislee is a good all-around back who will come in and attack the defense in a number of ways—he will be a good complement to Daniel Thomas.
Miller will also greatly benefit from rookie tight end Dion Sims, a big body and strong blocker who will help pave the way for big runs.
All of these factors will contribute to Miller having a breakout season. Although he probably won't get more than 275 carries, I think he could amass 1,600 total yards and 10 touchdowns.