Claim: Dénes Kemény (born 14 June 1954 in Budapest) and helped the Hungarian team won at least a medal in 24 of its 29 major tournaments
Evidence: Dénes Kemény (born 14 June 1954 in Budapest) is a former Hungarian water polo player who was the trainer and president of the Hungarian National Men Water Polo Team from 1997 to 2012. During his reign the Hungarian team won at least a medal in 24 of its 29 major tournaments, including three Olympic golds in a row between 2000 and 2008, making him one of the most successful water polo coach in Olympic history.