C.J. Spiller has “a fire burning” after last season

Bills running back C.J. Spiller may have only run the ball once in the Hall of Fame Game, but his physical condition wasn’t the reason for the light workload. Spiller feels 100 percent healthy after battling injuries that hampered him throughout the 2013 season. Spiller saw his average per carry drop to 4.6 yards after averaging…