Everyone has to call 'time' at some stage.

I think I was as mentally tough as I've ever been. I felt like I handled the situation both on and off the court extremely well. I felt like I needed to.

Tennis players go into a press conference, and almost every one of them is the same. We do very little differently on a day-to-day basis.

Grand Slams are different. If you can get through a few matches, the draw opens up and you get confident. You just need a little bit of luck early, you get through those opening matches and you never know what could happen.

That's what you do all the hard work for, to play in situations that put your body through gruelling times. If you're not up to it, pull out.

Matches are won and lost so many times in the locker room.

Maybe if you're playing in London or America, you don't feel that pressure quite as much.