We really did get along. We were very close and we'd spend four nights a week eating out together. So we (Fred and I) were very comfortable with each other.

And there are so many more beside those where replays would have made a huge difference. I absolutely think some big matches would have gone the other way.

On a consistent basis, definitely not.

To me, Federer is the best player that ever hit a tennis ball on a tennis court. But he can get better. He has this whole thing about raising the bar. They're not just words. Just as the Williams sisters raised it for women's tennis, he has raised it for the men's game. But there will be a response and he knows that.

On a consistent basis, definitely not. Sampras spent six years at No. 1 and after his run I thought the days of domination were over. But they're not.

I think it's a good move. ... It's like changing a racket. A coach is very helpful, but it's not all-important.