New Miami Dolphins general manager Dennis Hickey likely is spending these next few weeks being briefed not only on players to watch at the NFL Scouting Combine, but also his own players.

The Miami Herald columnist Barry Jackson got a taste of some of the evaluations Hickey might hear from Dolphins staffers.

One of the most interesting positions to monitor in Miami this offseason will be running back. The combination of Lamar Miller and Daniel Thomas was disappointing last season, to put it kindly.

"They're a good complement to each other, and we like Miller's speed and explosiveness," one Dolphins staffer told Jackson. "Miller has the higher ceiling, but you wish he ran with a more physical (style). And both have to improve as blockers."

The comment on Miller's physicality is interesting -- especially considering that was the team's feeling when letting Reggie Bush walk last offseason.

Miller is clearly the better back, but had huge boom-or-bust performances last season (putting up three games in which he had fewer than one yard per carry). He finished with 709 yards on 177 carries.

In Pro Football Focus' elusive rating (in which the website ranks a runner's success beyond the point of a blockers' aid) Miller was ranked 27 out of 32 running backs who took 50 percent or more of a team's carries.

The Dolphins are likely to add a running back, either via free agency or the NFL Draft.