 Coached by former World, Olympic, and European Champion Boris Shilkov, Antson had his best year in 1964, when he became European Allround Champion, won the 1500 m event at the 1964 Winter Olympics in Innsbruck, and set a new world record in the 3000 m at the same games.For his achievements that year, he received the Oscar Mathisen Award.The two gold medals Antson won in 1964 turned out to be his only international medals, although he did win some national medals at the Soviet Allround Championships – gold in 1967, silver in 1965 and 1968, and bronze in 1966.