This time last year I would have said Federer would beat Sampras's record. Now I'm not so sure. His aura has gone. He's not as dominant as he was, and since I beat him in Australia he's looked frustrated. Players are beginning to challenge him now, especially myself and Rafa. He's got 12 Grand Slams to his name and maybe he will beat Sampras, but now I'm here it will be tough for him.

It is my goal to win every time I play. But on the other hand, I also seek a balance of compassion and respect for the other players. I understand that everyone goes through difficult times, either mentally or physically, to cope with their life, to live the sport.

In terms of playing ability there is nothing to choose between number one and 100. Instead, it's a question of who believes and who wants it more? Which player is mentally stronger? Which player is going to fight the hardest in the big points? These are the things that determine who is the champion.

The fact that nobody played tennis in my family and you'd say by chance they make three tennis courts in front of the restaurant that my family owned when I was 4, I think that's a destiny. That's kind of life circumstances that kind of come together for you to become who you want to become.

My priority, the most important thing in my life is my family, my wife and my son.

This time last year I would have said Federer would beat Sampras's record. Now I'm not so sure. His aura has gone. He's not as dominant as he was, and since I beat him in Australia he's looked frustrated. Players are beginning to challenge him now, especially myself and Rafa. He's got 12 Grand Slams to his name and maybe he will beat Sampras, but now I'm here it will be tough for him.

I've had my ups and downs in my private life.