Basically I started playing double handed on both my forehand and backhand side because my first racket was very heavy.

I wanted to win, even in practice.

You never know how long Federer is going to play, but in my opinion he has at least one or two more grand slams to win. It depends how long he stays motivated. For me, he is the greatest player to ever play the game.

The ball is round, the game is long.

If you're a good experienced player, you wknow what it takes to do. If you're in trouble, you know how to change. One hundred percent of my game is instinct. I never stop and think I'm going to hit a ball crosscourt or down the line. I just do it.

You have to find it. No one else can find it for you.

Basically I started playing double handed on both my forehand and backhand side because my first racket was very heavy.