It is very hard for me to switch from clay to grass.
I have been working very hard and my knee is a lot better but it would not be right to go to a Grand Slam and test my knee right now. I am sorry to all my Australian fans but I will be back next year.
I am very sad that I cannot go to the Australian Open to defend my title. I have been working very hard and it is a lot better.
There was so much wind, it was tough to play good tennis. I'm having trouble getting my confidence back. But I'm working hard and trying to do it.
If I can put pressure on his serve, I'd have a chance. It's going to be very hard because he has been playing amazingly.