1.) Spencer Brown
The starting offensive right tackle has not lived up to this third-round pick draft stock and has battled through injuries in his two seasons with the Bills. When he has been on the field, his pass protection has been a liability and it is part of the reason why Josh Allen has to scramble to make a play with his legs or throw on the run.
Allen has yet to have an offensive line that can provide consistent pass protection. Up to this point, Brown seems to be the weakest player out of all the offensive linemen up front.
Going into this third season, if Brown continues to struggle, the Bills should be looking for better protection next year or even as early as the trade deadline. The sudden retirement of Brandon Shell not only hurt the depth on the offensive line, but it also took away competition for Brown throughout the season.