Gyarmati was the most successful water polo player in the history of the Olympics. He is widely considered the greatest water polo player of all time.
He participated in five different Summer Olympics, winning gold medals with the Hungarian team at the 1952 Summer Olympics in Helsinki, the 1956 Summer Olympics in Melbourne, and the 1964 Summer Olympics in Tokyo.
His team received silver medals at the 1948 Summer Olympics in London, and bronze medals at the 1960 Summer Olympics in Rome.
Gyarmati became European Champion two times, in 1954 and in 1962. He played a total of 108 matches with the Hungary national team.
Gyarmati played in the famous Blood in the Water match between Hungary and the Soviet Union at the 1956 Olympics, which occurred weeks after the Soviet invasion of Hungary.
FINA stated that while it is usually "remembered as the 'Blood bath of Melbourne' after the scenes of the dying minutes, it was team captain Gyarmati who opened the scoring and set up the other three goals Hungary netted while winning 4-0 en route to the title."
Hungary, under his coaching gained gold medals at 1976 Summer Olympics in Montreal, a silver medal at the 1972 Summer Olympics in Munich, and the bronze medal at the 1980 Summer Olympics in Moscow.
They also won the inaugural editions of both the FINA World Championship (in 1973) and the FINA World Cup (in 1979), as well as the European Championship in 1974 and 1977. They were runners-up in the World Championship in 1975 and 1978.
He was among the fastest waterpolo players of his age, with a personal record of 58.5 seconds on 100 meters.
His personal record is also including two gold medals at the 1954 and 1962 European Championships.
During his heyday Gyarmati was playing for two Budapest clubs, Újpesti TE and Ferencvárosi TC.
Gyarmati served as a member of the board of the Hungarian Water Polo Federation. He also wrote several books about water polo, including a history of Hungarian water polo.
Legendary Dezső Gyarmati - One of the most decorated players in the history of waterpolo.