The life story of Olivér Halassy is an example of exceptional physical and mental endurance. After losing part of his left leg in an accident, he turned his talents to swimming and water polo instead of land-based sports. In addition to becoming Hungarian champion numerous times, he won the European championship in swimming once, the European championship in water polo three times and Olympic gold in water polo twice. The fact that he only had two hours’ rest between winning the gold medal in swimming and the water polo final, where he also won a gold medal with his team at the 1931 European Championships in Paris, is a testament to his physical prowess.
He helped a number of persecuted people escape during the Second World War. His remarkable career was cut short in 1946 when he was murdered during a robbery. He was shot, and his father-in-law's car was stolen, probably by Soviet soldiers. Five thousand people attended his funeral.