Novak Djokovic won five titles at the ATP Finals, in 2008 in Shanghai, then 2012-2015 in London. He lost just one final, in 2016 against Andy Murray. In his press conference in Cincinnati, Djokovic was asked to comment about the tournament shifting from London.

The 31-year-old would like to play the event at a different venue. 'I have spoken about this previously,' Djokovic said. 'To be honest, I have had so much success in London. It's a fantastic event. It's an amazing venue for tennis.

You feel like a rock star. You really do. Packed house, amazing sound, light effects. Everything is done in a right way. The final eight, every day you play a big match. So it's a phenomenal week. It's been proven to be a big success.

But at the same time, I feel like this kind of concept of the tournament, the World Tour Finals, should travel more often. It's been there for now almost ten years. Basically, it's going to be more than ten years. And I just think that that's too long, in my opinion, because this is one big tournament aside of the World Team Cup that is going to come up in a couple of years, but this is the biggest event ATP owns, and they should leverage that to promote tennis around the world. 'I'm sure there are plenty of cities that want to have this event and host it.

I just think that it would be such a great thing for tennis to have it in different places every, say, three years, three, four years.' ALSO READ: 2018 Cincinnati Prize Money: Roger Federer and Novak Djokovic earnings