Roger Federer admires and likes Pete Sampras for everything he did in tennis. The Swiss player recently spoke about the American's biggest achievements. 'I think his success at Wimbledon, being able to win it seven times.

It's amazing. Winning it three times, coming back, winning it four times, going for five, it's quite something. And he finished off with the US Open victory. It was very special against his biggest rival Agassi. I think that's what I'll remember most of him.

But especially his fluid game. I guess the best serve we've seen in tennis history, even though today we also have some good ones. But it's just the way he used it and the way he backed it up. And, you know, what a smooth mover he was, as well, which he never really got credit for.

There's many things that Pete did incredibly well.' Federer was also asked about how much he remembers from his career overall: 'I think I know a lot about my history the matches I've played, the points I've played and stuff.

I guess in today's game we get reminded so many more times, you see it and you have pictures and film and everything, but I'm getting to the point where I start forgetting matches now, because I just have played so many.' ALSO READ: 'Roger Federer should never play on clay again' - Andy Roddick