But while all the German top fighters exited early he and middleweight Konstantin Buga were the only ones to reach the quarterfinal and qualify for the 2008 Summer Olympics .
He was relatively unknown in 2007 , when he was sent to the 2007 World Amateur Boxing Championships .
While all the German top fighters exited early he and middleweight Konstantin Buga were the only ones to reach the quarterfinal and qualify for the 2008 Summer Olympics .
He was relatively unknown in 2007 , when he was sent to the 2007 World Amateur Boxing Championships .