The major competition of the year was the 2004 Summer Olympics. At the event, Yelena Isinbayeva cleared a world record 4.91 m in the pole vault. Liu Xiang won the men's 110 metres hurdles with a world record-equalling time of 12.91 seconds,[1] defying traditional beliefs about the physical calibre of Chinese (and Asian) sprint athletes.[2]Hicham El Guerrouj capped off his prominent international career with two gold medals in the 1500 m and 5000 m. The Olympic competition in Athens was marred by an incident involving Greek Olympic medallists Konstantinos Kenteris and Ekaterini Thanou, who were alleged to have staged a motorcycle crash in order to avoid doping tests.[3] Both athletes missed the competition and were later banned for missing three doping tests.[4]