As unsettled as the Steelers' QB situation has been to begin this season, their offensive line has also endured some changes early in the campaign. OLT Max Starks missed Week Two with an ankle injury, with Jonathan Scott getting the call in his place, and Doug Legursky will step in for ORG Trai Essex (ankle) in Week Three. The center-quarterback exchange proved problematic at Tennessee, with two of rookie C Maurkice Pouncey's snaps to Dennis Dixon and one to Charlie Batch going awry. Crowd noise certainly didn't help matters, the way we hear it. The exchange problems in Tennessee highlight how the line has had adjust to Pittsburgh's QB uncertainty. Dixon was thrust into a bigger role because of Byron Leftwich's injury at the end of the preseason, and Batch had to take over when Dixon was injured at Tennessee. With Ben Roethlisberger slated to return after Pittsburgh's fourth game, the line will have to adapt once again. Pass protection continues to be a concern, with the Steelers allowing seven sacks in two games.