The Steelers are relying on Rashard Mendenhall too much

Only three running back in the NFL had more carries than Rashard Mendenhall in 2010 -- Michael Turner, Steven Jackson and Arian Foster. Mendenhall's 324 carries are the most for a Steeler back in one season since Willie Parker's 337 in 2006 and the second most since 2000, when Jerome Bettis carried the ball a remarkable 355 times. Running the ball a lot with one running back isn't always a bad thing. Bettis is a great example of this. He was big, powerful and durable. His backbreaking 3-yard runs moved the chains and won dozens of games during his Steeler career. But the NFL is much different now than it was in 2000. The league has transformed from a run-heavy league to a more open, pass-first mentality. That is true for the Steelers, as well. Running the ball is still important to the team, but with Ben Roethlisberger at the helm, there's no reason the Steelers shouldn't rely mostly on a passing attack. Rule changes in recent years have made it a lot easier on q...