and long jumper Jesse Owens won four gold medals. The 1936 Berlin Games also saw the introduction of the Torch Relay. Due to World War II, the 1940 Games (due to be held in Tokyo and temporarily relocated to Helsinki upon the outbreak of war) were cancelled. The 1944 Games were due to be held in London but were also cancelled; instead, London hosted the first games after the end of the war, in 1948. After World War II The first post-war Games were held in 1948 in London, with both Germany and Japan excluded. Dutch sprinter Fanny Blankers-Koen won four gold medals on the track, emulating Owens' achievement in Berlin. At the 1952 Helsinki Games, the USSR team competed for the first time and quickly emerged as one of the dominant teams, finishing second in the number of gold and overall medals won. Their immediate success might be explained by the advent of the state-sponsored "full-time amateur athlete". The USSR entered teams of athletes who were all nominally students, soldiers, or working in a profession, but many of whom were in reality paid by the state to train on a full-time basis, hence violating amateur rules. Finland made a legend of an amiable Czechoslovak Army lieutenant named Emil Zátopek, who was intent on improving on his single gold and silver medals from 1948. Having first won both the 10,000- and 5,000-meter races, he also entered the marathon, despite having never previously raced at that distance. Pacing himself by chatting with the other race leaders, Zátopek led from about halfway, slowly dropping the remaining contenders to win by two and a half minutes, and completed a trio of wins. The 1956 Melbourne Games were largely successful, with the exception of a water polo match between Hungary and the Soviet Union, which ended in a pitched battle between the teams on account of the Soviet invasion of Hungary. The equestrian events were held in Stockholm due to a foot-and-mouth disease outbreak in Britain at the time and the strict quarantine laws of Australia. At the 1960 Rome Games, a young light-heavyweight boxer named Cassius Clay, later known as Muhammad Ali, arrived on the scene. Ali would later throw his gold medal away in disgust after being refused service in a whites-only restaurant in his home town of Louisville, Kentucky. He was awarded a new medal 36 years later at the 1996