1984 Los Angeles Olympics: In the finals of the 3000 metre event, Zola Budd (competing for Great Britain) and Mary Decker of the United States collided that resulted in the latter being unable to complete the race. Though spectators and commentators accused Budd of deliberately pushing Decker, an IAAF jury found her not responsible for the collision. Source: Wikipedia. (All Photos: AFP)
Canadian sprinter Ben Johnson was stripped of his gold medal for the 100 metres when he tested positive for a banned substance.
Romanian Andreea Raducan became the first gymnast to be stripped of a medal after she tested positive for a prohibited substance.
Swedish wrestler Ara Abrahamian placed his bronze medal onto the floor immediately after it was placed around his neck to protest his loss to Italian Andrea Minguzzi in the semifinals of the men's 84kg Greco-Roman wrestling event. He was subsequently disqualified by the IOC.
Cuban taekwandoist Ãngel Matos was banned for life from any international taekwondo events after he kicked a referee in the face.
The North Korean women's soccer team refused to take the field after the players were introduced on the jumbo screen with the South Korean flag
16-year-old Chinese swimmer Ye Shiwen's world record win in the women's 400m individual medley raised eyebrows after her final 50-metre sprint was faster than American men's swimming star Ryan Loch