You always have to continue working, because everybody is. Once you stop, the others will overtake you.
I'm a player, or I'm a person who needs to practice a lot; otherwise, I don't play well.
If you always experience new and better things than before, then you don't get tired at all.
In the juniors, you are kind of a star, but just because you are a good junior doesn't mean you will be a good pro.
I'm not a big fan of the Olympic Games. The ATP calendar is a bit complex due to the Olympic event.
My family are tennis coaches, and they always brought me to the tennis club. I basically had no other option than to start playing tennis.
The one-handed backhand helps you to be more aggressive in the points.
I think I'm a very powerful player; I can hit good groundstrokes.
Against Novak, it's really tough for me to play, I mean, because he doesn't give me any time. I don't really like to play against him because he has a game style which doesn't fit me at all.
It was a big pleasure to play a Grand Slam match on my birthday.
I think I didn't win a match for one, one-and-a-half years.
When you win in straight sets, where is the challenge?
I prefer playing ATP tournaments and Davis Cup competition rather than Olympic Games.
I always wanted to be a professional player, but when I started playing well in Challengers and, for the first time, I did well at ATP tournaments, I saw that these guys are also beatable.
Movement is one of the most important things. My consistency, everything - there's a lot to improve. Coaches are never happy. But I'd like to keep improving, go deeper in the tournaments, and get as high in the rankings as possible.
My strokes are safer when I hit full power. They are unsafe when I hold back; it's more that I force myself to go full power all the time.
I think you have to improve every day a little bit so you don't have one day where there's a big thing coming.
The less top players that are in the draw, the higher the chances get for us, obviously.
Guys like me, we have a different style that makes it hard to break in easily. When I was 18, 19, I felt like I was just a boy, body-wise and mentality-wise. I had to fix everything together.
I like to play tiebreaks, as that is when it gets interesting. Even when I was young, I enjoyed these kind of matches.
