Once upon a time, an offensive line coach could pencil in his starting five and count on the same group lining up every week, and perhaps from year to year. Former Bills offensive line coach Jim McNally, who spent 14 seasons tutoring blockers, noted a few years ago that one could review a bunch of team pictures and "notice that the offensive linemen were the same four, five, six years in a row … and were basically in the same places in the picture."