Welcome to Standard Sports LIVE coverage of the ATP final as the world's top-ranked players battle for the final prize of the calendar year.
Tennis season's grand finale returns to London for an 11th consecutive year as the O2 Arena stages the climax for the 2019 season.
Five-time ATP Finals champion Novak Djokovic is again the favorite, and the Serbs got off to a good start this afternoon with victory over Italy's Matteo Berrettini in just over an hour.
Roger Federer, who is 5/1 to win a seventh crown in the ATP final, has not won the season finale since 2011, opening his tournament against Dominic Thiem tonight.
We give you live coverage of today's action plus the results and schedule of the rest of the tournament
L. Kubot / M. Melo 4-6 3-1 I. Dodig / F. Polasek
An early break has given Kubot / Melo a lifeline in this second set. Will they take it to three?
After the first set …
L. Kubot / M. Melo 4-6 I. Dodig / F. Polasek
L. Kubot / M. Melo 1-2 I. Dodig / F. Polasek
The players are out on the field and today's penultimate match is underway!
We bring you the scores from the second double match today.
Coming up next …
In the Jonas Bjorkman group we have Lukasz Kubot and Marcelo Melo against Ivan Dodig and Filip Polasek.
It should start right after 7 p.m. 18, and then it is Roger Federer against Dominic Thiem.
That's all from Djokovic for now.
The number two world spoke confidently and confidently there, and it looks like he is fully focused on getting to that final.
He has put up a marker with that performance. In a few hours we will see what Federer is made of.
Djokovic reflects on his first ATP Finals performance 12 years ago …
“I remember in 2007, I played for the first time in the finals in Shanghai and lost all three matches with Nadal and Ferrer in my group.
"I was glad I was there, proud to be part of the eight elite guys, but it's an environment that's new to you. It's different to know you're there for the first time and playing against the top 10 players every time, that's a lot of mental pressure.
"We know how to handle this situation now, and this was his first time, so that's why he (Berrettini) may have felt a little more nervous. I'm very pleased with the way I returned, knowing where good a server he is. "
Djokovic expects Federer to bring out his best tennis when the two meet …
"Roger is experienced and he is one of the biggest players to have the racket. He can handle the pressure and the way he handles it is phenomenal.
"Regarding respect for him, regardless of his age or whatever surface we play on, I know Roger will deliver his best tennis. Rarely does he fail to play his best.
"I don't want to think about a mental challenge, I don't know if that's what I want to do – I want to think about what I'm doing well and trust it."
How will Djokovic react if the crowd supports Federer over him?
"Look, I said it after the Wimbledon final that I understand the support for Roger and who he is, the personality he is, he deserves it. Sometimes the crowd is on your side, sometimes it's against you. I have to learn how to deal with it and how to accept it.
"It would be nothing different in terms of my reaction. I will accept it and respect it. Obviously there are plenty of tennis fans who will see us go head-to-head, and hopefully it will be a packed one House. "
The Serb shows frustration in matches, even when he wins …
"There's no explanation other than trying to play as perfectly as possible. It's me. Everyone is different. In those moments you sometimes get frustrated with certain things. I don't mind the result as much as the performance of certain shots and techniques. "
Djokovic explains how he stays in shape …
"There's a combination of things I make sure I take care of my body all year. I went through some serious injuries, fortunately not too many, and I understand the value of recovery … it's very important.
“I commit to the routines daily because in the long run they train and it's good to be healthy at the end of the season because mentally you have to match the drop of energy you get.
"I'm pushing myself to create even more energy for the last couple of tournaments, knowing that I've done so well indoors here in London, and that gives me more motivation and confidence to come into the tournament."
Here's Novak …
Novak Djokovic will speak shortly, and we will bring you updates from his post-match press conference as they arrive.
Don't go anywhere!
That's all from Matteo Berrettini for now, with the Italian remaining positive despite his opening loss against Novak Djokovic.
Berrettini describes his debut experience …
"It's a slightly different experience from last year. It's nice, and the crowd is light and friendly. It's a really good environment. I'm proud to be here, I want to learn a lot from this experience."
Berrettini on the conditions inside 02 Arena …
"I think it's better when I have a little more time on the ball. The court was quick and the ball moved faster, but we'll see how (I adjust)."
Berrettini starts with some praise for Djokovic …
"He returned incredibly, the most impressive thing he did. You have to tell me because I was on the field, but I felt he was playing really well and moving really well."
Matteo Berrettini has arrived at his post-match conference.
Here's what the Italian had to say …
"I was nervous, it was my first time after a good year, but not in a bad way. Sometimes I don't get nervous before a match and it feels wrong. I need to feel it to play good tennis.
"He was just better than me today, so needs to accept the loss, learn from it and go from there."
Still ahead …
We have a bit of a gap until the evening meeting, which begins at 1 p.m. 18 with today's second double bind.
Lukas Kubot and Marcelo Melo take over Ivan Dodig and partner Filip Polasek in group Jonas Bjorkman.
And later tonight it is Roger Federer takes on Dominic Thiem in the second Bjorn Borg match. It should be a cracker.
A clear goal for Djokovic now.
He must reach Sunday's final to remain in contention for the world's number one in the ATP rankings.
He has been there six times in the last seven tournaments. Only a brave person would hedge their bets against him.
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Plan and results
Sunday, November 10
Center Court, the game begins at 1 p.m. 12
Result: (4) R. Ram (USA) / J. Salisbury (GBR) 3-6, 4-6 R. Klaasen (RSA) / M. Venus (NZL) (5)
Result: (2) N. Djokovic (SRB) 6-2, 6-1 M. Berrettini (ITA) (8)
(2) L. Kubot (POL) / M. Melo (BRA) vs. I. Dodig (CRO) / F. Polasek (SVK) (8)
Not before 20
(3) R. Federer (SUI) vs. D. Thiem (AUT) (5)
. (tagsToTranslate) atp finals (t) Roger Federer (t) Novak Djokovic (t) Tennis (t) Sports