Simon's prime was during the dominance of the likes of Roger Federer, Novak Djokovic, Rafael Nadal and Andy Murray. For the Frenchman, he is glad to have played a part but of course would have wanted to achieve more.

"For someone like me who was in the middle of these guys' careers, it was a nightmare. It was a chance to play with the best players and to compete against them," said Simon in an ATP Player Blog.

"Every win I earned against them was a huge performance in itself, having a chance to test yourself against guys who are some of the best players ever.

Federer, Nadal and Djokovic might be the three best players of all-time at one point. I’m lucky that I’ve been part of it."

"But the problem is when you’re a tennis player, you want to win. You want to win big tournaments. However, with Rafa competing, for example, it’s complicated to win Roland Garros."

"I feel like we need young players to play great tennis. Tennis was suffering for too long, as the new generations have not been good enough to beat the Big Four. It’s not saying anything bad about guys like Milos Raonic or Kei Nishikori or anyone from their generation, because those guys are super good. It just shows how good Roger, Rafa, Novak and Andy were."

For Simon, he sees now that there is more of a chance for younger players than back in his day and that they will soon take over from the dominance of the likes of Federer, Djokovic and Nadal.

"Even being 20 years older than some of the new players, they still beat them because they are just martians. It’s crazy to be that good for that long every single tournament, every single week," he continued.

"However, because the Big Four are getting older, they have to play a bit less, so there is a bit more of an opening. It’s great to see new players starting to come through.

Now I’m happy if the young guys can finally beat them. We need that for the sport. I think this new generation of players, many of whom are under 23 years old, they play super good. They will lead the sport in the future and I’m really happy to see that."