|Born||September 12, 1959
Hrazdan, Armenian SSR
Sos Hayrapetyan (Armenian: Սոս Հայրապէտյան, born September 12, 1959 in Hrazdan, Armenian SSR), also known as Sos Airapetian, is a former Soviet field hockey player from Armenia. He was a four-time winner of the Cup of the USSR (1982, 1983, 1986, 1987), eight-time Champion of the USSR (1980-1987), two-time winner of the European Cup (1982, 1983), winner of the Intercontinental Cup (1981), winner of the European Championship (1983) and Olympic medalist (1980) in field hockey. Hayrapetyan was named an Honoured Master of Sports of the USSR in 1984. His position was guard. He is the father of Levon Hayrapetyan.
Sos Hayrapetyan's first passion was football. He only started to pursue field hockey seriously in 1976. Within a few years, he had grown into one of the leading Soviet players. He started his career in 1978 at SKA (Sverdlovsk).  In 1978 and 1979, as a member of the club, he won the silver medal in the Championship of the USSR twice, and in 1980, became the Champion of the USSR. From 1981 to 1987, he played for the club Dynamo (Alma-Ata). During these years he became the Champion of the USSR seven times, won the USSR Cup four times and won the European Cup twice. From 1988 to 1992, he was a player of hockey club Hrazdan (Razdan).
From 1978 to 1991, Hayrapetyan was part of the USSR national field hockey team. In those years, the Soviet national hockey team had great success in its early history. In 1980, they won an Olympix bronze medal at the 1980 Summer Olympics in Moscow. They won the Intercontinental Cup in 1981 and, in 1983, won a silver medal at the European Championships, losing only in the penalty shootout in the finals. Subsequently, coach Eduard Eirich celebrated the confident game line of defense of his team, highlighting the unmistakable game of Hayrapetyan and Farit Zigangirov during this tournament. In 1984, due to the decision of the Soviet political leadership to boycott the 1984 Summer Olympics, the USSR Olympic team could not perform at the Olympics. Instead, the Soviet athletes competed at the Friendship Games, where the Soviet national field hockey team came in first place. All the players of the team were awarded the title of Honored Master of Sports for their victory. Hayrapetyan was a member of the USSR field hockey team at the 1988 Summer Olympics in Seoul, where the team came in seventh place, and in 1992, participated at the 1992 Summer Olympics in Barcelona as part of the Unified Team. The team came in tenth place.
In 1992, Sos Hayrapetyan moved to the German city of Hamburg and, from 1992 to 2004, played for the field hockey club from the city, Uhlenhorster HC. In 2004, after winning silver medals at the club championship in Germany, Hayrapetyan came to coaching. He also helped in training his son, the national player of the Armenia national football team Levon Hayrapetyan.
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