You just have to prove to yourself that you can go out there and be the best that you can be and not prove anything to anyone.

I've always made some legendary comebacks since 1998 when it first started. So that's kind of just been my MO for my whole career.

My goal in a couple of years is to try to build a successful fashion house like Armani or Versace. I want that more than anything.

Everybody who plays me plays me so hard because they always want to beat me.

Will I have to explain to my daughter that her brother is gonna make more money doing the exact same job because he's a man? If they both played sports since they were three years old, they both worked just as hard, but because he's a boy, they're gonna give him more money? Like, how am I gonna explain that to her? In tennis we've had great pioneers that paved the way - including Venus [Williams], who fought so hard for Wimbledon to pay women the same prize money they pay men, and Billie Jean King, who is one of the main reasons Title IX exists.

I try not to be protected. Because I feel like you can become a little bit of a robot. That's not who I am. And I don't want to be monotone. It's important to be yourself, whatever the cost.

You can't underestimate anyone.