I have no sense of humor about losing

As a tennis player you can win and you can lose, and you have to be ready for both. I practised self-control as a kid. But as you get older they both - winning and losing - get easier.

Humility is the recognition of your limitations, and it is from this understanding, and this understanding alone, that the drive comes to work hard at overcoming them.

I've stayed calm when I'm winning and I've stayed calm when I've lost. Tennis is a sport where we have a lot of tournaments every week, so you can't celebrate a lot when you have big victories, and you cannot get too down when you're losing, as in a few days you'll be in the next tournament and you'll have to be ready with that.

Federer is the No. 1 in tennis, and if I meet him in the Masters Cup, I'll play a world No. 1. It will be difficult, but I' m very young and have nothing to be afraid of.

I'm ambidextrous when I eat. But playing tennis right-handed - I can't do it. I'm clueless.