Plugging the holes: AFC East

Some pundits like Clausen to the Bills at No. 9; if they don't upgrade their O-line, though, it'll be a brutal run for any QB. Getty Images

As we near the draft, Football Outsiders is taking a look at the major holes in the roster of each NFL team by division. Here now: the AFC East.

Buffalo Bills

Biggest hole: Offensive line

The surprising retirement of offensive tackle Brad Butler at age 26 left a bad Buffalo line in complete shambles. The Bills currently have 11 offensive linemen on the roster, only four of whom have started as many as 10 games in a season.