President of the Organising Committee for the Olympic Games 2001. Pierre de Coubertin who headed the organizing committees for the 1900 and 1924 Summer Olympics as well as the 1924 Winter Olympics was the founder of the modern Olympic movement and International Olympic Committee. He served as President of the International Olympic Committee from 1896 to 1925. Peter Ueberroth who headed the organizing committee for the 1984 Summer Olympics in Los Angeles went on to serve as the Commissioner of Baseball from 1984 to 1989. Sebastian Coe who headed the organizing committee for the 2012 Summer Olympics in London is now serving as the President of the International Association
Olympic Games ceremony I declare open the Rio Olympic Games, celebrating the XXXI Olympiad of the Modern Era". Next, the Olympic flag is carried horizontally (since the 1960 Summer Olympics) into the stadium and hoisted as the Olympic Hymn is played. The Olympic Charter states that the Olympic flag must "fly for the entire duration of the Olympic Games from a flagpole placed in a prominent position in the main stadium". At most games, the flag has been carried into the stadium by prominent athletes of the host nation, but in 2012, it was carried by an international group of athletes and non-athletes