Brett Carlson/Getty ORCHARD PARK, NY - DECEMBER 3: Head Coach Sean McDermott of the Buffalo Bills yells during the first quarter against the New England Patriots on December 3, 2017 at New Era Field in Orchard Park, New York. (Photo by Brett Carlsen/Getty Images) “Understand your role.” A simple yet important phrase that Buffalo Bill s HC Sean McDermott repeated multiple times during his press conference on Friday, underscoring how vital he feels it is to his team’s performance. When you