5 Truths: World Tour Finals must remain in London; Novak Djokovic back loving his tennis

It's so rare that, as a fan, you can avoid either having to get on a packed, hectic tube or be stuck in miles of traffic in the car when attending a big sporting event. There seems no way around it. However, one of the amazing things about having the World Tour Finals at the O2 Arena is having the option of getting a boat to the venue.

It seems too good to be true that you can simply hop on a Thames Clipper with your Oyster card for the princely cost of £4 and half an hour - and many top London tourist attractions - later, you find yourself coasting up to the O2, ready to watch the world's top tennis stars do battle in a very unique setting. For tennis fans visiting London, it really is a must.

Even when he walked on court to face David Goffin on Thursday, it was abundantly clear that Djokovic was absolutely loving being back in action in a top tournament. The Serb, who has struggled through an inauspicious few months following his sensational triumph at Roland Garros, really did appear to be back enjoying the game.

In the press conference after his convincing victory, Djokovic spoke of how he was relishing being back in London and feeding the ducks in the city's famous parks with his son. He also spoke candidly about how he was still feeling fresh and energised during what is the final event for him in a gruelling campaign. From posing for selfies with fans to his extended and amusing celebrations, it was wonderful to see Djokovic so happy on court again.

There is something very special about having the World Tour Finals in London. With 16,000 fans having packed out the O2 Arena to see Andy Murray overcome Kei Nishikori on Wednesday night, it is very clear that the appetite and demand is very much there from fans in the UK and beyond to see the game's top stars in action.

Seemingly every single player has more than once spoken about how much they enjoy visiting London at this time of the year and what a special venue the O2 Arena is for hosting tennis. With the showbiz feel and razzmatazz, the setting feels both refreshing and entertaining for players who can play significant and meaningful tennis, while in a fast-paced, three-set format. The tournament has been held at the venue since 2009 and the current deal expires in 2018. Fans have to hope that it is extended again into the distant future.

It is a popular thought nowadays to be done with doubles. After all, it does not bring in big money, big sponsorships or big attendances. However, what the World Tour Finals does brilliantly is draw justified attention to the often ignored four-player format. Fans did not arrive late just in time for the singles; rather, spectators were comfortably in their seats to watch the doubles beforehand, which has to be encouraging.

As much as Andy Murray and Djokovic are the biggest draws, what is very clear in London is just how revered and admired Jamie Murray is. The British public really do love the elder Murray brother, and his partnership with Bruno Soares has been a highlight for many at the season-ending tournament. In Jamie Murray, the ATP Tour has a doubles player who now carries the status enjoyed by the ridiculously-decorated Bryan brothers, and that's some achievement.

It's easy to arrive at the O2 Arena and be completely stunned by the show - after all, it's completely absurd, but in a wonderful way. When you make your first visit to the venue you are amazed and amused by the loud dance music, flashing lights, enormous fan-friendly screens and smoke machines, but it all adds to the feel of the event.

As a fan experience, the World Tour Finals is extremely refreshing with the players laid back and open to the public, while the tennis is all about fun and having a party. It is so very unlike any Grand Slam tournament; the players clearly love the event and it is a very unique opportunity for fans to see their heroes up close in a setting in which they clearly feel very comfortable.