Patrick Smith/Getty Images Roquan Smith of the Baltimore Ravens warms up prior to the game against the Buffalo Bills at M&T Bank Stadium on September 29. For the second straight year, the Baltimore Ravens will open their regular season against the team that ended their season. But according to linebacker Roquan Smith, the Ravens already have their Week 1 date against the Buffalo Bills circled on the calendar. “Revenge is best served as a cold dish,” Smith told NFL Network’s Rich Eisen when