Below is the Steelers week 4 defensive participation chart versus the Baltimore Ravens from this past Sunday. Sorry for the delay this week as my grandfather passed away on Wednesday and I have been in and out all week. Please comment with any discrepancies you find. One thing that was noticeable was that the Steelers did not rotate the defensive line as much as they did in the the first 3 weeks. I realize it was not as hot, but on the final 2 drives, Brett Keisel was out with cramps and Aaron Smith seemed tired and sluggish. Also Casey Hampton was forced to play every non nickel defense snap at nose tackle and was not spelled by Steve McLendon at all. Chris Hoke was really missed.