During today's final, after a great point that Federer won by defense, Johnny Mac said that was Federer's best ever point on defense(or words to that effect). But I've noticed that Federer isn't as fast as he once was. He used to have better acceleration+agility but he's slowed down some because I remember him being faster in Wimbledon 2003 and Australian Open 2004. After that, it gets fuzzy. Andy Roddick has slowed down a lot since his 2003 US Open win. Slowing down hasn't hurt Federer that much because he has many other tools to rely on. Roddick didn't/doesn't. I wonder what will happen when Nadal loses some of his speed?