 Complete the following phrase:  Eduard Hambardzumyan was born on February 23, 1986 in Sochi, Russian SSR. Hambardzumyan won a gold medal at the 2004 Junior World Amateur Boxing Championships in Jeju. He defeated Argenis Mendez in the final. In 2006, he won a silver medal at the Russian Championships. Hambardzumyan began representing Armenia in 2007. He made it to the quarterfinals at the 2007 World Amateur Boxing Championships, guaranteeing himself participation in the upcoming Olympics. Hambardzumyan lost in his first match at the 2008 Summer Olympics to eventual gold medalist Manuel Félix Díaz. Hambardzumyan won a gold medal at the 