Boxing, mixed martial arts and tennis are the hardest sports to train for.

Having a normal knee would make life a lot easier.

Sometimes you're looking to play perfect tennis but it's not going to happen all the time and you have to accept it.

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.

You can be careful as far as you can, but you never know when you're going to fall over and break your ankle. It's like when you drive a car, you don't think about crashing, do you?

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

I am not stroppy at all.