Steelers GM Kevin Colbert believes Rashard Mendenhall was never at 100 percent in 2012.
Mendenhall is no Adrian Peterson. He tried to return to action nine months after his ACL tear, but lacked burst and lateral quickness. He averaged just 3.56 yards per carry, had some trouble with his Achilles' tendon and got benched. If Mendenhall is going to win the feature-back job in Bruce Arians' scheme, he's going to need to prove his health.