Chinese medals in serious doubt
Claims that more than 10,000 Chinese athletes used banned substances during the 1980s and 1990s will be investigated by the World Anti-Doping Agency's intelligence unit.
Former Chinese athletic team doctor Xue Yinxian has declared that all medals won by China in the 1990s, including those won at the expense of Sonia O'Sullivan, should be handed back due to a systemic doping programme.
O'Sullivan lost out on two World Championship gold medals in the 1990s as middle-distance Chinese runners emerged on the scene and smashed the world record multiple times.
The Irish runner was forced into fourth place by the trio of Qu Yunxia, Zhang Linli and Zhang Lirong in the 3000m at the 1993 World Championship but did manage to claim silver in the 1500m - again behind a Chinese athlete.