All-Pro middle linebacker Zach Thomas (migraine) did not practice and was officially ruled out for Monday night's game, making it the fourth straight week he will be on the sidelines and the sixth overall this season. That surpasses his previous high of five games missed due to an ankle injury in 2000 ... Defensive end Matt Roth (groin) also did not practice and is being listed as doubtful ... Running back Jesse Chatman (ankle) and nose tackle Keith Traylor (ankle) were limited and Chatman is listed as questionable while Traylor is probable ... For the Steelers, wide receiver Santonio Holmes (ankle) and safety Troy Polamalu (knee) both did not practice and have been ruled out ... Linebacker LaMarr Woodley (hamstring) participated in a full practice but is listed as questionable ... Defensive end Brett Keisel (shoulder) and cornerback Deshea Townsend (ankle) also practiced in full and are listed as probable ... Offensive tackle Marvel Smith (coach's decision) participated in full and was left off of the doubtful/questionable/probable lists.