Introduction: On May 19, 2013, in the final round of the Premier League, Manchester United tied West Brom 5:5 The 2012-13 Premier League Championship trophy returned to Old Trafford after a year of sidelines. After the game, Sir Alex Ferguson held a press conference and he announced two things that caused a sensation in football. First, Sir Alex Ferguson today completed his 1500th game coaching at Manchester United and officially announced his retirement. Second, Sir Alex Ferguson strongly recommended Tiger King to Manchester United as his successor. On this day, the entire football scene was a sensation. There is only one question in everyone’s mind: Who is Tiger King?...