Sorry been deep in work, but meanwhile, check this out. Roger Federer on Charlie Rose. Roger won again today, 12 majors. 26 years old. Amazing. This video might show you why he's so bad ass. Just click and watch it, it's about an hour long.
It's not just Federer and Charlie Rose, it's the others who are great and still swear that Federer is probably the best including Rafael Nadal, the #2 guy.