My motivation is tomorrow, just one day at a time, right?

Stay healthy, do sports and above all have fun while doing sport. Competing or just for fun, whatever, simply enjoy and try your best. Working hard, working well with achievable goals normally pays off. Believe in the people that are with you and listen to those who have more experience.

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.

You just try to play tough and focus point for point. Sounds so boring, but it's the right thing to do out there.

I think I am a complete player. I can play well on all the surfaces. For me, the clay might be easiest, but I am not a specialist on clay.

You have to accept both losing and winning well. I've stayed calm when I'm winning and I've stayed calm when I've lost.

For sure, with golf it's not a physically demanding sport like tennis. That's what makes tennis great - you combine both things. It's a very mental sport and at the same time can be dramatically physical. But I do admire the mentality of sport more than the physicality because physical performance is much easier to practice than mental performance.