I'm a global ambassador for the World Wildlife Fund and United for Wildlife and I am also a Unicef UK ambassador. It's important to me to support charities. I never want to take my wealth for granted.

I've realised over the years I play my best when I have time to prepare for each tournament as best as possible.

I think most players would love, at one stage in their career, to say, 'I've been No. 1 in the world.

It becomes tricky, and you start to think about the cramps rather than just actually what you're trying to do on the court, which is obviously win the match.

I'd have loved to have been a footballer. I was always playing football and I enjoyed it much more than tennis to begin with. It's more fun to play in a team, all the parents are there cheering you on.

A believer may pass through much affliction, and yet secure very little blessing from it all. Abiding in Christ is the secret of securing all that the Father meant the chastisement to bring us.

I'm a global ambassador for the World Wildlife Fund and United for Wildlife and I am also a Unicef UK ambassador. It's important to me to support charities. I never want to take my wealth for granted.