Posted by ESPN.com's Mike Sando from Pittsburgh
Running back Jesse Chatman appeared to suffer an injury during his most recent carry. The Steelers tagged him hard following an impressive run up the middle. Chatman is walking off the field, but he's not moving very well. The Dolphins already lost Ricky Williams to a shoulder injury. Lorenzo Booker is inactive. The team released Samkon Gado to make room for Williams on the roster. That leaves Patrick Cobbs as the lone true halfback available. Reagan Mauia is the fullback.