I don’t think he has changed his game a whole lot since the first time I played him and I really thought he would have done. He is going to have to grind it very hard in the next few years if he is going to play this way.He stands way behind the court. You have to do a lot of running and he tends to wait for the mistakes of his opponent. I gave him the mistakes today but overall in a 15-year career you want to look to win a point more often rather than wait for the other guy to miss. Who knows he might surprise us all.
You do different things against different players.You go and watch my match against Rafael Nadal at the 2007 Australian Open, and I was playing pretty close to the baseline in that match and taking a lot of risks because I think that's the right way to play against him.Against Federer I don't think that's the right way to play. I'm not going to play that sort of game against someone that defends as well as Federer does.My serve is clearly much better than it was two years ago. I feel quicker and stronger around the court. Mentally I feel like I'm better.But there are still some things in my game that I want to improve and it does take some time to put them into the match court. I feel like I've started to do that this year.