Q. Can you assess Sam's game, Roger. He has some weapons, it seems?
ROGER FEDERER: Absolutely. I think he's a good player. I didn't know him much, you know. But I think he has a nice technique on the backhand. Can play aggressive on the forehand. Excellent first serve. He's got a lot of potential, and many things he has to work on.
But I think he moves pretty good for a tall guy. That's one thing. And I think if he works hard the next few years, he can be an excellent player in the future.