Provided Najeh Davenport is healthy and can show his legs are still strong, Duce Staley's role may vanish. Davenport is a big, strong runner who has averaged 4.9 yards per carry in his career. The problems for him have been injuries, the same way they were a problem for a former big back with the Steelers, Chris Fuamatu-Ma'afala. They may keep Staley around because they have to pay his full salary of $1.5 million anyway and as insurance in case Davenport or another back is hurt.