I think I was as mentally tough as I've ever been. I felt like I handled the situation both on and off the court extremely well. I felt like I needed to.

I have sometimes played my best Davis Cup matches away from home when you stay in the moment a bit more. But it is tough when half the crowd are spitting on you.

That's what you do all the hard work for, to play in situations that put your body through gruelling times. If you're not up to it, pull out.

I've probably put up with more criticism than a lot of people out there. At the end of the day, you block out everything, especially with your personal life.

I was lucky enough to win the Davis Cup in my first year in 1999. I won my first slam at the U.S. Open in 2001 and became world No. 1 later that year. By the age of 20, I'd done it all.

I'm fortunate: I can play as long as I want to play. There's no coach or trainer who is going to say to me that I'm dropped or sacked, it's time to move on. I can play as long as I want to play.

I'm more in that Rafa Nadal high-energy high-octane mold out there. I wear that emotion on the court. That's how I play my best tennis. People either like that or not. And I can't change that: that's who I am on a tennis court.