He is the son of Olympic medal winning field hockey player Sos Hayrapetyan.

In January 2011, he signed a contract with Polish club Lechia Gdańsk for a half-year deal.

On 9 February 2011, Hayrapetyan made his debut in the Armenia national football team in a friendly match with Georgia.

[3] Levon suffered an injury on 11 September 2012 in a 2014 FIFA World Cup qualification away match against Bulgaria and underwent knee surgery in Munich.

His father moved to Hamburg when Levon was a child in order to play and coach for field hockey club Uhlenhorster HC.