The glory is being happy. The glory is not winning here or winning there. The glory is enjoying practicing, enjoy every day, enjoying to work hard, trying to be a better player than before.

I play because I have fun, if I don't have fun on the court, there is something wrong. I am just a 19 year old boy that likes to do what he likes, nothing else.

My motivation and aspiration is the same, being number one or being number five. So that's the truth. And my goal is the same - it's to always be happy playing, it's to enjoy the game and improve always.

I'm not the best player in the history of tennis. I think I'm amongst the best. That's true. That's enough for me.

Hard courts are very negative for the body. I know the sport is a business and creating these courts is easier than clay or grass, but I am 100 per cent sure it is wrong.

If you are playing bad you are going to lose here, on clay, on ice, or on the beach.