I think it's difficult to be No. 1. 'There's too much attention, too much expectation from other people.

My mother said I would have more chances to become a tennis player than a football player.

I pass through the difficult moments in life, really difficult times on grass, during my seven years of my career. All of a sudden I felt comfortable.

It's too many questions about what I'm going to do, why I'm retiring, and this and that. So I answer the same question, I don't know, a thousand times.

But normally when you talk to yourself [on court] you say; 'I love you, you're a good guy, but don't miss next time, okay.'

You cannot take all the chances you get.

You can find flaws in Agassi and Sampras, but Federer has none.