The most animated talks we have are about...things

Tennis is the loneliest sport.

To be inspired - that's the secret.

I question myself every day. That's what I still find motivating about this. I don't have the answers, I don't pretend that I do just because I won the match. Just keep fighting and maybe something good happens.

I had moments of my actions and words not reflecting who it is I am - if that defines a punk, then yes, absolutely.

I've been motivated by overcoming challenge and overcoming the hurdles and obstacles that face me. There still is plenty out there to get motivated by.

If you're ranked number one in the world it's because you've earned it, and I think the only way to really get there is to have that ability and to have it nurtured in a very competitive environment at an early age.