I always had the theory that the most important thing is be happy, enjoy what are you doing, and be fresh mentally.

It's hard to say, 'I don't believe in God.' I would love to know if God exists. But it's a very difficult thing for me to believe.

I like a lot of sports. Especially football - it's my favourite sport. My uncle played football in Barcelona for nine years and played for Spain in three World Cups.

It's the same old story, all you think about is money.

It's more a tennis problem than a mental problem. The transition is difficult. It depends how much time you have. Playing on grass can sometimes be a bit of a lottery.

The only way of finding a solution is to fight back, to move, to run, and to control that pressure.

Everybody is doing the best things possible to still healthy and to play as long as possible.