Given the high standard of men's throws in the Soviet Union during this period, Gavryushin only competed at three major international events. He had identical results at the 1982 European Athletics Championships and 1987 World Championships in Athletics, coming eighth with throws of . His sole major medal came on home turf at the 1986 Goodwill Games in Moscow, where he was a silver medallist in a Soviet 1–2 finish behind Sergey Smirnov.