FRONT AND CENTER: Gino Gradkowski entered camp as the frontrunner to replace Matt Birk at center, but over the past few days, newcomer A.Q. Shipley has seemingly gotten more snaps with the first-team offense. With his short, stocky frame, Shipley looks like he could moonlight as a night club bouncer. He doesn't mind getting physical, as he showed the other day when he stoned linebacker Josh Bynes on an inside blitz. We'll see which guy gets the start in Tampa Bay.