I never close my mind to anything and eventually want to branch out. But for now, tennis is still number one for me.

I'm currently writing a screenplay that I haven't started yet.

I don't go thinking I'm going to lose. I never go into a tournament thinking that. I'll do the best that I can.

It's remarkable she [Venus Williams] plays at all, given her Sjögren's syndrome [an autoimmune disorder that can cause joint pain]. She's back, winning tournaments. She didn't allow society to tell her, "You have this disease; you can't do that anymore." I look at her, like, "She's not playing at 100 percent. You are. You don't have excuses." Knowing what she went through helped me try to be a more positive person.

I've always considered myself the best and the top. I never considered that I was out of it.

The knee just isn't 100 percent. It's hard to be out there when you know that you can't play at your best and could potentially make it worse.

Honestly, I could get in a car accident today and never play tennis again, and then I wouldn't have anything to fall back on. But fortunately enough, I do.