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 am not stroppy at all.

I've been asked a lot lately if tennis is clean or not. I don't know any more how you judge whether a sport is clean. If one in 100 players is doping, in my eyes that isn't a clean sport.

I like to think I have a good few years left of my career yet, as long as I stay fit and healthy. However, it's always good to have a backup plan, which is why I have been working hard to build my business portfolio outside tennis.

I was pretty young when I bought my first place, and at that time didn't really view it as an investment. After living there for a few years I decided to move out of London, so I decided to rent it out for a few years. Then, as the property market continued to rise, I made the decision to sell.

The coming revival must begin with a great revival of prayer. It is in the closet, with the door shut, that the sound of abundance of rain will first be heard. An increase of secret prayer with ministers will be the sure harbinger of blessing.

For me the most important thing has always been tennis, and that's what I want to get across the image I want to portray is a hard-working tennis player.