Roger Federer plays flat and elegant tennis, but in his career, he has shown to be competitive on clay as well playing top-spin balls. There is a secret to this tactic of his. 'When I was 14, we had Sven Groenefeld as a coach for a little while.
He used to put an extra rope over the net, over the regular tennis net, because we were making so many mistakes and the court was so quick,' Federer revealed. 'So by hitting it higher, of course, the ball doesn't skid through as much, and we had to play safer and it was very hard to hit winners.
So we had to play with more spin, which actually now was a very good exercise because in wintertimes, you know, we would play on this lightning-quick surface where you couldn't get any rhythm, you know, and like this, you would.
It was a good exercise.' Federer also commented on what he feels when he plays well: 'I'm very focused at this moment when I'm really playing well. Of course very confident, because you have the feeling on the important points, you're always going to come out on top, you know. Just with that feeling inside of yourself, you actually become very relaxed but very focused.
So it's a combination of a few things, yeah.' ALSO READ: Rafael Nadal: Worse players than David Ferrer won a Grand Slam title