I'm asking this question earnestly from people who have looked at the tape. Is Koppen getting overpowered too often to be a starting center for a super bowl winning team? I don't have any solid evidence but I have a sneaking suspicion that it's really the interior of the line that is the weakness. And where better to start looking than center? How would you evaluate Koppen's performance at center in 2009? Does he need to be replaced or should the Pats keep him and hunt for a new RG instead?