Ian O'Connor: Belichick, Brady have the greatest transactional partnership in the history of the league

ESPN's Ian O'Connor joined Bull & Fox to talk about about his book "BELICHICK: The Making of the Greatest Football Coach of All Time", the lessons that Belichick has learned since his early coaching days in Cleveland, the relationship between Belichick and Tom Brady, why Belichick's assistants haven't had great success as head coaches and the Patriots' matchup with the Rams in Super Bowl LIII.