In the 2008 Beijing Olympics, Angel Matos took his anger to the extreme. When an official disqualified Matos in the Taekwondo bronze-medal match due to a technical error (he was knocked to the mat and didn’t get up quickly enough), the Cuban athlete responded by kicking the referee in the face. Matos has since been banned from all future events sanctioned by the World Taekwondo Federation.
A Brief History of Olympic Sore Losers
Russia's Evegni Plushenko believes he deserved the men's figure-skating gold medal instead of silver at the Vancouver Winter Olympics. In honor of his poor sportsmanship, TIME takes a look at other Olympic complainers