A lot has changed about football over the years, especially in the last 20 or so, but throughout it, the importance of a good offensive line has remained constant. Whether it’s road grading to keep the chains moving or keeping a quarterback upright, without a functioning offensive line, it’s very, very difficult to create any kind of structured, consistently functional offense. Last year, with a new position coach, the UNC offensive line went from atrocious to functional if frustrating. There’s no promise that trend continues, however, as the group has experienced some major turnover in the time between last December and now.