10. Sarah Stevenson - most dramatic overturn

Bloodied referee Chakir Chelbat of Sweden is pictured after he was kicked by Cuba's Angel Valodia Matos (not in photo) for declaring Kazakhstan's Arman Chilmanov as the winner in the men's +80 kg taekwondo bronze medal match at the 2008 Beijing Olympic Games in Beijing on August 23, 2008. [Agencies]

In Briton Stevenson's taekwondo match against Chen Zhong, in which the Chinese was first announced as the winner. Stevenson filed a protest. The result was reversed after a review of the video which was unprecedented in the Olympic taekwondo history.