Miller has game-breaking speed and agility, showing a rare knack for shaking defenders in the open field with a subtle head fake or hip shiver. Much like LeSean McCoy of the Philadelphia Eagles, Miller is just very hard to tackle in space. That's a problem considering how often he has the ball.
Miller is a true three-tool player who can run, catch and return kicks. He doesn't bring much to the table right now as a blocker, but after coming out as a redshirt sophomore, he has little wear on his frame and is aggressive enough to learn to be a blocker down the road.
We love Miller's game-breaking speed and quickness, but he will have to learn to accumulate yards when the path to the corner is blocked off. If he can become a better between-the-tackles runner, Miller has the athleticism to become a feature back and Pro Bowl-caliber player.
For now, though, Miller will be a good change of pace for Miami's regular bruiser Daniel Thomas. If he's able to beef up a bit, there's a chance he can become more of an every-down runner. Whatever the case, he's another tool for Matt Moore (or, perhaps, Ryan Tannehill) under center for the Dolphins.