... do these guys have in common? All are former stars trying to win a job in 2010, players whose skills have greatly diminished as the result of being a workhorse running back for multiple seasons.

Johnson and Parker have already been released this season, while Westbrook is a bit player for San Francisco who has tallied only one carry on the year.  

In trying to diminish the daily pounding taken on NFL RBs, more and more teams have begun to split carries among two ball carriers in recent years. This season is no exception, as some of the league's most productive rushing attacks are the product of utilizing two runners.

Following is a list of the NFL's five best RB tandems of 2010.

Bleacher Report - NFL