'The Bills were disappointed in 2014 because they expected the running game to help lead the efforts. The offensive line was woeful, and the running backs couldn't over-compensate for them — meaning changes were on the way for 2015. The Bills addressed the offensive line, and went for as high-profile an acquisition as you'll find in trading for McCoy this offseason. McCoy will be the leader of the entire offense, and will be the focal point of both the Bills and their opponents.'