Gradkowski ready for responsibility of backing up Ben

For Pittsburgh-native Bruce Gradkowski, the chance to run with the starters in Heinz Field is special, even if it happens in June. But for the Steelers, his work represents a significant change after years of relying on an aging group of backup quarterbacks. With Ben Roethlisberger on the mend from knee surgery, Gradkowski worked with…ProFootballTalk » Pittsburgh Steelers