Posted by ESPN.com's Paul Kuharsky
A look at injuries that could impact Sunday's games.
Reserve linebacker Chaun Thompson (hamstring) will also be a game-time decision.
Right tackle Ryan Diem (ankle) was a full participant in Friday's practice and is probable.
For Pittsburgh, running back Willie Parker (shoulder) won't play, according to the Pittsburgh Post-Gazette, with Mewelde Moore filling in. Quarterback Ben Roethlisberger (shoulder) was a full participant and is probable.
Middle linebacker Mike Peterson could start, but after a week of conflict with Jack Del Rio he might be suspended or could dress as a reserve. If he does not start, Daryl Smith will slide to the middle and Clint Ingram will start in Smith's regular outside spot.
For Detroit, quarterback Dan Orlovsky (hand) is out with Daunte Culpepper set to start. Fullback Jerome Felton (ankle), center Dominic Raiola (hand), string safety Dwight Smith (foot) and tight end Casey Fitzsimmons (ribs) are out.
Linebacker Keith Bulluck (chest) and defensive end Kyle Vanden Bosch (groin) are both questionable and will be game-time decisions. Neither of them practiced all week. The guess here is Bulluck plays and KVB does not.