I play each point like my life depends on it.

I am No. 8 in the world. I am not No. 100.

It's more a tennis problem than a mental problem. The transition is difficult. It depends how much time you have. Playing on grass can sometimes be a bit of a lottery.

However great your dedication, you never win anything on your own

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.

It is no longer enough to play very well. You need to be able to give an answer at all times and everywhere. You cannot hide. This has something to do with maturity, and that is something you only acquire over the years.

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