'The Bills' offense is going to struggle as long as Sammy Watkins (calf) and LeSean McCoy (hamstring) continue to miss time. Percy Harvin and Robert Woods struggled to get open as the focal points of the passing game, and Karlos Williams found little running room behind the Bills' offensive line. Watkins and McCoy open up the offense quite a bit with the attention they draw from opposing defenses. That was a bigger factor Sunday than we anticipated.'