He hasn't changed a bit. He hasn't been arrogant in the locker room. He never is. That's great to see someone that does it with class. He doesn't intentionally get in anyone's face. He doesn't put people down.

[In the modern game], you're either a clay court specialist, a grass court specialist or a hard court specialist ... or you're Roger Federer.

He is on his way to becoming possibly the greatest of all time. But he's still human.

Roger is at the top, and he's the only person at the top, regardless of how much people want to make rivalry comparisons and this, that and the other. He's the…