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 detect banned substances. Several athletes were barred from competition by their National Olympic Committees prior to the Games; only three athletes failed drug tests while in competition in Beijing. In London over 6,000 Olympic and Paralympic athletes were tested. Prior to the Games 107 athletes tested positive for banned substances and were not allowed to compete. During and after the Games eight athletes tested positive for a banned substance and were suspended, including shot putter Nadzeya Ostapchuk, who was stripped of her gold medal. Russia was partially banned from the 2016 Summer Olympics and completely banned from the 2018 Winter