Although I would LOVE to vote for the Slava, Novak Djokovic but I will vote for Roger Federer. Heck for all I know his parents could be Slava and they immigrated to Switzerland, same as the Zlatan Ibrahimovich situation. Anyways &K brings up a good point, Roger Federer was a likeable guy, on the opposite end of that was bitch made McEnAsshole and Agasi. Of coruse they weren't liked for different reasons. I also agree with Bache Tehroom, the modern athlete is physically superior to the athlete of the past. It is the same thing when people try to debate basketball Jordan or LeBron. Well if you go by just the stats then Jordan but if you go by measurable like pure athleticism a 6'8 260 pound guy who can run like a point guard or NFL running back, then LeBron. There is going to be a tennis player twenty years from now or a basketball player and he will be physically superior to Federer or LeBron. It is just apart of the cycle as every generation passes the technology get's better, the facilities get improved, medicine improves, the doctors can better treat you. Back in the day if you tore your ACL, like when Magic and Jordan or McEnroe, Agasi or Sampras played, your professional career was pretty much over. Also, I have no idea who Mansour Bahrami is but sounds like he was a phenom. Well these things happen there is a generation of American and Russian athletes who never got their shot in the Olympics back in the 80s.