Jack Sock

If I need to I can play defense, I guess.

I'm entering tournaments every week trying to win.

Playing main-draw matches helps, and playing in front of crowds and playing in big matches definitely helps, getting them all under your belt.

If I double-fault or I miss a shot I don't think I should miss, instead of getting more upset, I can think back to the tough times that my brother went through or trying to make my grandpa proud.

Kansas City - it's simple living. It has everything that I need.

Clay is my favourite surface.

When it's best-of-five sets and most of the Slams are hot, humid conditions, you need all the energy and rest you can get in the singles.

I love playing doubles. I've had some success out there and I've always loved playing with friends.

People lose, it happens.

Obviously at the end of the day it's an individual sport.

I was a smaller kid when I was growing up so I had to learn some defensive skills. I had to grind a little bit and win points by scrapping it out.

I don't know if it's underrated or not but I have confidence in my speed and my quickness around the court.

I'm definitely a creature of habit.

When you're No. 8 in the world, then you start losing some matches, I think it was the first time in my career my confidence went down, and from there it was a downward spiral.

I can personally say if I'm not relevant in the singles world and my only choice is to play doubles, I'd probably stop playing tennis.

Being from the Midwest, everyone knows I take pride in representing the U.S. and to have my own racket and bag is really nice.

It's the tactics, the little things I like to focus on and get better at.

There was something about being in Rio, being around the other Olympic athletes and playing for the U.S. It was the most special experience I've had.

I feel like I can move well on the clay. So if I need to get into a longer rally, I can.

The bigger the stage, I feel like the better I play.

I've always had a thing for playing in front of people, and the nerves never really creep in too much for some reason for me.

Some people like the off days to do a light practice or work on things and then get ready for the next match. I don't mind going out and playing a doubles match and working on returning serving and working on a few things.

Just being out on court, just all the experience you get on court can only help.

Hopefully, I can play college tennis for a top program.

I like Hewitt's quickness and how Federer behaves on the court.

I think any success you can have on the tennis court, doubles helps. If you're playing on the weekend, you're in the trophy ceremony at the end of it, one of the last guys in the locker room, it can only give you confidence.

I'll go joyriding when I come home, listen to music with the windows down.

I've always been a little different in the way I've done things, going to high school instead of a tennis academy when I was younger.

Everyone's different, but I think the snug feel is definitely popular on tour. A lot of guys like to feel like they are held tightly in their shoe. That feeling helps you move around the court quicker.

Some guys usually get intimidated by my forehand.

I appreciate what I've been given, and the chance to play tennis for a living is definitely a blessing.

I definitely don't take days for granted anymore.

When you are on the court and a guy shanks a ball off the line, and I think it's the end of the world, then I think about my brother being in a bed for three straight weeks not able to breathe on his own, and it doesn't seem as bad.

In the past, I would let things get to me and been much more emotional, both positive and negative.

I want to win Slams and be No. 1 one day.

Not many people can say they've been the top player in their sport in all of the U.S.

Any time you can play the greatest of all time is a fun experience.

I thoroughly enjoy doubles, everyone knows that.

Yeah, definitely on a mission now to compete to try to be winning these tournaments I'm playing.

I think my game is very suited for clay. It brings out my strengths more so than my other surfaces.

I prefer Cincinnati, personally, over a tournament like Madrid. For me it's better. There's a lot to do here, in my opinion.

Wherever I'm at, if I'm playing well I can put myself into a position to win any tournament, including grand slams.

I believe and am confident in my game.

My focus is to do the best I can in singles.

With doubles, I've never really gone out and been like, 'I really want to win this tournament,' or, 'I really want to do well in doubles this week.' It's more extra time on the court and to go out there and have fun. And I've happened to do well at it.

No matter how well you do, there's always people that are going to hate or have better expectations.

I'm a shoe geek.

When you're watching college tennis and you're in that close match, there's nothing better.

Traveling so much to tournaments, you get behind in school work.

To play with one of the greatest doubles players of all time in Mike Bryan was super-fun.