In an interview to Eurosport, the seven-time Grand Slam champion Mats Wilander spoke about how the future of tennis will look like once Roger Federer, Rafael Nadal and Novak Djokovic will retire. 'Federer can’t play for too many more years.

Nadal and Novak, they have a few more years. But who is going to replace them? It is not going to be a new Federer. Is it rivalries? We don’t need a superstar, we need good rivalries. We don’t need a dominant player like Federer,' said Wilander.

Boris Becker said: 'I think eventually tennis takes care of itself. We have just got to give it time. There isn’t another Federer. We need these guys to step up and beat these top players before they quit. Obviously with Novak, you see he has got his game back.

You see Rafa still when he is healthy. If somehow a guy like [Dominic] Thiem would beat him at Roland Garros that would be something much more interesting.' John McEnroe spoke about how players deal with heat: 'The best players seem to handle the heat better.

They have more options to go to. If I had to pick one guy who was the most affected I would go with Novak. He doesn’t have any extra weight obviously, not that these guys have a whole lot. It seems like Nadal energises in the heat.

To me, Novak is the one who is the most vulnerable in the heat, to me on this surface, when they’re all playing their best. When it is like this I would say he drops down a little.' ALSO READ: Mats Wilander explains why Dominic Thiem can beat Rafael Nadal at US Open