Kleomedes of Astypalia
Kleomedes of Astypalia was an Ancient Greek boxer, who had a successful boxing career all throughout the 5th century BC. However, in either the 71st or 72nd Olympic Games (496 or 492 BCE), using an illegal strike, he killed his opponent Ikos. Because of this offense, and not due to the murder of his opponent, which was not considered a punishable act, he was disqualified and heavily fined by the judges.