One day you can be a kid, but another day you have to be like this is your job, you play tennis. You have to work for that.

I still speak Czech with my parents because I was born there.

Any tournament you go to, you want to win it.

I've always said I'm a good horse but I'm still an underdog.

That's one of the reasons I moved to Florida. Of course, the main reason is the weather and the training. But there's more jealousy in Switzerland because it's so little and they don't have so many athletes.

I've lived for 10 years in Switzerland, so I speak German.

I went through very emotional things this year, like being in the French Open finals already feeling like you got it and kind of losing it.