Ayrapetyan became the 2002 World Youth Champion in his weight class after boxing for just six years. He was included in the Russian national boxing team in 2006 and won a gold medal at the
2006 European Amateur Boxing Championships in Plovdiv. Ayrapetyan is only the second Russian boxer to become a European Champion in the light flyweight division, after the highly decorated veteran
Sergey Kazakov. In 2006 and 2007, Ayrapetyan beat Kazakov at the Russian Championships and took his spot on the national team as first in the light flyweight division. At the
2007 World Amateur Boxing Championships, Ayrapetyan beat returning Vice-Champion
Pál Bedák in the first round but next lost to reigning World Champion
Zou Shiming, who went on to win the World Championships again. Ayrapetyan competed at the
2008 Summer Olympics in Beijing. He unexpectedly lost in the first match to
Georgiy Chygayev, who won the European Championship at flyweight that year and then moved down in weight class. Ayrapetyan reached the finals at the
2009 World Amateur Boxing Championships in Milan and won the silver medal. He won a bronze medal at the
2011 World Amateur Boxing Championships after losing to now reigning World and Olympic Champion Shiming, who went on to win the World Championship yet again. Ayrapetyan advanced to the semifinals at the
2012 Summer Olympics and won an Olympic bronze medal. ==Awards==