Fed at 30, Nadal with broken knees 10 years into his career. http://www.youtube.com/watch?v=aSmDCHLJM70 The level of play is just insane; and that was just a "good" match between the two. I could and have watched replays of Fed Nad matches over and over. We are always talking about who is best, better - too many opinions. This is IMO the best period to watch tennis, and possibly may be for a LONG time to come. Agree or disagree?