I try to do my best to have fun off the court.

I've felt it (shoulder soreness) since the first day I came, but more so now. Yesterday in the doubles I felt like I couldn't serve at all. I had a lot of pain. I decided to stop because without the serve it doesn't make any sense. It's better to stop and try to recover. If you play, you play 100 percent, not to suffer on the court...Hopefully I'll be ready for the Australian Open. I'll ask for a late start and try to recover. I can playing forehand, backhand, anything except serve.

I was making comebacks every single year. That makes it difficult mentally. It causes a lot of stress.

Roger [Federer], he brought tennis... one level higher. Normally he toys with everybody. With all respect to other players, he does whatever he wants on the court against them. It's incredible what kind of game he can play.

Whenever I am losing, it's like, 'It's his fault'. And whenever I'm winning it's like, 'That's us'. That's the team, the people.

Don't get too excited when I am winning, and don't get too depressed when I am losing. Just keep it cool.

But when I'm losing a few matches, suddenly 'It's his fault', 'He doesn't want to practice', 'He doesn't need it', 'He doesn't care'. And when everything goes well, there are people coming behind the stone, saying, 'Oh, my God, he's back finally, and I was there to help him out'.