You and many had predicted Federer's reign would end early a year ago, but what Federer has done in the past? He has improved more than others, and he actually distances himself from the rest even more. It's incredible for someone like him when he had little challenge. If he gets more challenged, as competitive Federer is - doesn't want to lose any match, he is going to get even better. I'll bet Federer would have more success between 2007-2009 than Sampras' 1997-1999.