Swiss legend Roger Federer recovered from his opening round-robin loss to beat Italy's Matteo Berrettini in straight sets at the Association of Tennis Professionals (ATP) Finals at the O2 Arena in London.

Dominic Thiem stunned Novak Djokovic to become the first player to reach the last four at the ATP Finals

the Björn Borg group, Thiem followed up his win over Federer by claiming a stunning victory against Novak

Djokovic to become the first player to reach the last four at the ATP Finals.The Austrian rallied from

players in each group after the round-robin stage progress to the semi-finals on Saturday (November 16).Djokovic

Germany's Alexander Zverev began the defence of his Association of Tennis Professionals (ATP) Finals title with an impressive straight-sets win over Rafael Nadal in London tonight.

Action in the Björn Borg group resumes tomorrow with second-seeded Serbian Novak Djokovic, who can overtake

Novak Djokovic cruised to victory in his opening match of the Association of Tennis Professionals (ATP

the opening set at the O2 Arena and Berrettini proved unable to mount a fightback in the second, with Djokovic

maintaining control to seal a 6-2, 6-1 win.Novak Djokovic is hoping to end the year as the world number

World number one Rafael Nadal will hope to overcome fitness doubts to challenge for the Association of Tennis Professionals (ATP) Finals title in London.

’s Stefanos Tsitsipas and Germany’s Alexander Zverev.Zverev is the defending champion after beating Novak

Djokovic in straight sets at last year’s finals.The second group is headed by Djokovic, with the Serbian

star seeking to win the event for the sixth time in his career.Novak Djokovic will return to the world

number one ranking should he win the tournament ©Getty ImagesShould he achieve the feat, Djokovic will

Novak Djokovic won his 34th Association of Tennis Professionals (ATP) Masters 1000 title today after

to do everything to be ready to compete at the ATP Finals, due to take place from November 10 to 17.Djokovic

last month and making his first ATP Masters 1000 final in Paris.But the left-hander could not hold off Djokovic

You already have a great career but I am sure that the best things are yet to come for you," Djokovic

World number one Novak Djokovic is through to his 50th final at Association of Tennis Professionals (

final tomorrow. pic.twitter.com/NZWqVMhde5— ATP Tour (@atptour) November 2, 2019Four-time champion Djokovic

the race to qualify for the ATP Finals, which are due to take place in London from November 10 to 17.Djokovic

Novak Djokovic of Serbia comfortably beat Stefanos Tsitsipas of Greece at the Paris Masters, an Association

Djokovic defeated Tsitsipas 6-1, 6-2 in 58 minutes at the AccorHotels Arena, avenging his Shanghai Masters

Aiko Yoshitomi triumphed in her first match of the All Japan Tennis Championships, a test event for next year's Olympic Games in Tokyo.

park's impressive centre court - Ariake Colosseum - staged the final of the Rakuten Japan Open, when Novak

Djokovic of Serbia claimed glory with a 6-3, 6-2 win against Australian John Millman.The Ariake Colosseum

Italian Andrea Gaudenzi has been announced as chairman of the Association of Tennis Professionals (ATP).

Association of Tennis Professionals Player Council President Novak Djokovic has welcomed Gaudenzi's appointment

administration from the International University of Monaco.World number one and ATP Player Council President Novak

Djokovic said: "On behalf of the players, I'd like to welcome Andrea as the next chairman of the ATP

Democracy is a dirtied word in the United Kingdom these days. The Greeks may have invented it, but the British have sullied it thanks to the current shenanigans over another word someone must have dreamed up and is now regretting: Brexit.

.· The longest singles final in history at Wimbledon between Roger Federer and Novak Djokovic.· England

Qualifying for the main draw of the Mitsubishi All Japan Tennis Championships gets underway tomorrow, as Ariake Tennis Forest Park prepares for its Ready Steady Tokyo tennis test event.

centre court - Ariake Colosseum - staged the final of the Rakuten Japan Open earlier this month, when Novak

Djokovic of Serbia claimed glory with a 6-3, 6-2 win against Australian John Millman.

Olympic glory for the 20-time grand slam winner, who made his debut at the Sydney Games in 2000.Serbian Novak

Djokovic won the Rakuten Japan Open at Ariake Colosseum earlier this month ©Getty ImagesThe closest

Tokyo 2020 organisers maintain they are on schedule with construction works for the 2020 Olympic and Paralympic Games, despite several venues still needing to be completed here.

completed by March 2020.Earlier this month, the venue was showcased through the Rakuten Japan Open, when Novak

Djokovic claimed the honours, but away from the impressive centre court, another four courts are due

Roger Federer announced today that he plans to compete at next year's Olympic Games in Tokyo in what will probably his last opportunity to win a gold medal in the singles.

before the US Open is due to start in New York City.Serbia's world number one and Federer's old rival Novak

Djokovic has already declared that Tokyo 2020 will be one of his main targets next year.Djokovic was

 "I'll try to be ready for the Tokyo Olympics in great shape," Djokovic said."

Russian Daniil Medvedev reached his sixth consecutive tour-level final after beating Stefanos Tsitsipas of Greece in straight sets at the Shanghai Masters.

seventh man since 2000 to reach nine or more tour-level finals in a single season, joining Serbia's Novak

Djokovic, Switzerland's Roger Federer, Britain's Andy Murray, Russia's Marat Safin and Spain's Rafael

Greece's Stefanos Tsitsipas claimed a shock win over world number one and defending champion Novak Djokovic

’s ATP Finals in London.But the 21-year-old Greek did not know that when walking onto court to face Djokovic

[Tsitsipas] had the high-quality tennis and he played very well after his serve," Djokovic, who won the