Barnwell ranks Achilles' heels for 20 NFL contenders: Bills' QB, Pats' RT, more

Every team has a weakness, even the Super Bowl favorites. A few should worry more than others -- including the Bills.

source https://www.espn.com/nfl/story/_/id/29772260/20-contenders-2020-nfl-season-20-big-weaknesses-ranking-achilles-heels