However well I return, opportunities will probably be few and far and I need to be ruthless.

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

Against Steve Johnson at the Olympics I was down a couple of times.

In tennis, it is not the opponent you fear, it is the failure itself, knowing how near you were but just out of reach.

We are to be shut out from men, and shut in with God.

I understand how much everyone wanted to see a British winner at Wimbledon and I hope everyone enjoyed it. I worked so hard in that last game. It's the hardest few points I've had to play in my life. I don't know how I came through the final three points... that last game ... my head was kind of everywhere. That last game will be the toughest game I'll play in my career, ever.

Tipping generally changes depending on where you are in the world. In Britain you don't always have to tip, but I always make sure I do. I have a lot of respect for waiters and waitresses - it can't be an easy job and they often don't get paid huge amounts, so I think it's important to reward them and let them know if they are giving great service.