But if the ankle injury that knocked out T.J. Lang from last Sunday's loss at the New Orleans Saints keeps from playing against the Bears, then Tretter could be a possibility at right guard. Lane Taylor finished the game against the Saints for Lang, but Tretter might be a better option, considering how well he played at center before his injury and some of the problems Taylor had, especially as a run blocker.

"We're still working through that," offensive coordinator Tom Clements said earlier this week.

Tretter returned to practice two weeks ago -- the earliest possible date allowed under the temporary injured reserve rules -- and has practiced at all the offensive line positions, including tackle, where he played in college at Cornell.