Changes in Medal Standings
Since the closing of the 2000 Games, the medal results changed following a doping scandal involving five-time Olympic medal winner Marion Jones in athletics. The American sprinter was stripped of her 1 gold and two bronze medals, by the International Olympic Committee, after confessing, on 5 October 2007, she had taken the anabolic steroid tetrahydrogestrinone before competing in Sydney. Along with the other four medals, the women's 100 metres gold medal has not yet been reallocated, because the presumed recipient, Ekaterini Thanou of Greece, was given a two-year ban for missing a drug test just before the 2004 Summer Olympics, in Athens. However, Jones' teammates on the relay teams had their medals reinstated.
On 2 August 2008, the International Olympic Committee stripped the gold medal from the U.S. men's 4x400-metre relay team after Antonio Pettigrew admitted to taking EPO and human growth hormone. On 21 July 2012, the IOC decided to reallocate the gold, silver and bronze medals to the teams from Nigeria, Jamaica and the Bahamas that finished behind the US team, respectively.
On 25 February 2010, The Associated Press reported that one of the members of the Chinese Gymnastic team was found to be under the minimum age limit set for competition. The governing body of the event, the International Gymnastics Federation, reported that it determined Dong Fangxiao to be 14 during the 2000 Olympics. The minimum age for competition was 16. The IGF invalidated the results of the competition in relation to the disqualified athlete. On 28 April 2010, the International Olympic Committee formally stripped the Chinese team of its bronze medal in the team event. The United States, which originally placed fourth, was awarded the bronze.
Read more about this topic: 2000 Summer Olympics Medal Table