The US player Andy Roddick reaches speeds of 220 kilometers per hour when he serves. If I train with him every day, I will later be at an advantage against a player whose service crosses the net at 190 kilometers per hour.

I've stayed calm when I'm winning and I've stayed calm when I've lost. Tennis is a sport where we have a lot of tournaments every week, so you can't celebrate a lot when you have big victories, and you cannot get too down when you're losing, as in a few days you'll be in the next tournament and you'll have to be ready with that.

Something that works for one person could be a disadvantage to another.

Tennis is beautiful when you can see tactics, when players don't just react but are able to act and think.

I like fishing. Not actual fishing - I like the peace and quiet of being at sea. It's different.

For me, it is important to win titles and for that I need to work hard, stay healthy and be able to compete. The rest, I always say, it comes.

That's painful always to lose.