Q. Do your daughters ever say to you, Dad, do this or do that? Why do you do that? Do they ever talk about tennis to you in any way?

ROGER FEDERER: Yeah, the one thing in tennis they tell me is I should -- once they told me I should play on the lines. They think that's a good thing. I was like, Okay, I'll try that. The other one said that maybe you should look that way and play the other way. I said, Okay, I'll try that, too. It's not as easy as you think it is, but I'll try.

That was actually quite funny. When they came to practice the other day, they asked me to do the trick. I was like, Which one? The one where you look the one way and play the other way. So they have given me advice, if you like, yeah. They're good coaches, yeah.