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.

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.

It's hard because you want to be able to just, okay, focus your energy on trying to win the match, but you need to then have tactics as to how you're going to deal with how you're feeling.

Well, my mum's been a tennis coach - she coached me till I was 12.

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.

For me, by far, the Olympics is the biggest sporting event in the world.

Obviously you try to keep as much of your private life as private as you can.