If by '2008 men's single' you mean Wimbledon, then Rafael Nadal. Nadal also beat Federer in the French Open.
Federer of course!
Novak Djokovic
yeah like every spanish tennis player (Nadal especially) and a # of others (Federer, Blake, ect.)
It is one and only "ROGER FEDERER"
Because TENNIS desreves HIM....
Roger federer is the best player of tennis
Roger federer
Roger Federer
Roger Federer
Roger Federer
Roger Federer
Roger Federer