Marathon Bombing Suspect's MMA Instructor: Not The Guy I Used To KnowTamerlan Tsarnaev was a very talented boxer, according to friends.
Marathon Bombing Suspect: 'I Don't Have A Single American Friend'Tamerlan Tsarnaev, a Boston Marathon bombing suspect who was killed early Friday, once described himself as not having a single American friend and aspired to be a U.S. Olympic boxer.