ESPN's Tim Graham links to yet another Scouts, Inc. article, this one highlighting a number of running back situations around the NFL. You have to be an ESPN Insider to read the full article, but fortunately, I am indeed a member and can provide you with the text:
The Dolphins have one running back whom I trust: Ricky Williams. He still can play at a very high level. He runs with a nasty edge. To me, Miami needs to use him more. Williams should be the lead back for the Dolphins. He was a rock for Miami last season and is one of the most underrated players in this league.
Ronnie Brown is coming off yet another injury. He is up for free agency at the end of the season, and it seems highly unlikely that Miami brings him back, so he is another guy that the Dolphins should not hesitate to wear into the ground. That might sound harsh, but this is a business. If used in a rotation, Brown still can be effective. Even going back to his days at Auburn, Brown has never shown to be a true workhorse runner. He does catch the ball well. He needs to re-establish himself in this capacity, which should be a goal for 2010.
Lex Hilliard doesn't have a lot of tape to review, but he didn't play badly in his limited time. To me, Williams would get the most meaningful carries, while Brown could complement him and contribute more in the passing game. But in terms of the big picture, it wouldn't surprise me at all if Miami made running back a very high priority after the 2010 season.