Ranking NFL s Most Cost-Efficient Backfields as RB Position Continues to Lose Value bleacherreport.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bleacherreport.com Daily Mail and Mail on Sunday newspapers.
The running back may no longer be the glamorous position it once was, but it's still a critical piece of the puzzle for any NFL offense. It can be difficult…