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.

The world asks, "What does a man own?"; Christ asks, "How does he use it?"

I decided at the outset to invest in a fairly broad range of businesses, as I didn't want to get pigeonholed into one sector.

There is need of a great revival of spiritual life, of truly fervent devotion to our Lord Jesus, of entire consecration to His service. It is only in a church in which this spirit of revival has at least begun, that there is any hope of radical change in the relation of the majority of our Christian people to mission work.

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.

I didn't practise it loads when I was at the academy in Spain, but when I got on the ATP Tour it's something I dedicated a lot of time to.

Christ will always accept the faith that puts its trust in Him