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.

It is the small steps which bring you satisfaction at the end of the day.

If I am not playing at one hundred percent, it is going to be very difficult for me to win.

Most important thing, I am not a player who win the serves because I serve aces or free points, no. When I winning a lot of serves is because I am playing well from the baseline. That's why.

I used to wear sleeveless T-shirts all the time on court, but now I've got a brand new look - I've moved on to polo shirts. Sleeveless T-shirts give you real freedom of movement and they keep you cooler in matches, but I just thought it was time for a change.

Since I was a kid, I've wanted to do sports for a living. In the beginning, I played a lot of soccer, but in the end I chose tennis. I love sports in general ... But tennis is my passion.

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.