Summary

  • Click on button at top of page to listen to BBC Radio 5 Live Sports Extra coverage of ATP Finals

  • NOW: Daniil Medvedev beats Rafael Nadal 3-6 7-6 (7-4) 6-3 - semi-final

  • Dominic Thiem beat Novak Djokovic 7-5 6-7 (10-12) 7-6 (8-6)

  • Winners will meet in Sunday's final at the O2 Arena in London

  • Earlier: Britain's Joe Salisbury and American Rajeev Ram missed out on doubles final

Live Reporting

Amy Lofthouse and Matthew Henry

  1. There's just been some heartbreak in the doubles for Britain's Joe Salisbury and his American partner Rajeev Ram.

    The pair have just missed out on reaching the final - and finishing the season as the top-ranked duo - after a narrow loss in the deciding tie-break.

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  2. Welcome back

    Nadal v Medvedev

    Right then.

    Who will take on Dominic Thiem for the season-ending title in London tomorrow?

    Medvedev and NadalGetty Images

  3. Back soon!

    Dominic ThiemGetty Images

    Well that was fun!

    We know one of our finalists. Will Dominic Thiem face Rafael Nadal or Daniil Medvedev tomorrow?

    Join us from 20:00 GMT for the second semi-final to find out.

  4. Andrew Castle
    BBC Sport tennis commentator at the O2 Arena

    It is one thing to hit winners against ordinary people but Novak Djokovic is not ordinary.

  5. Tim Henman
    Former British number one on BBC Two

    In the pressure moments over the years we have seen Djokovic win so many times. Credit to Thiem he won six points in a row. He was able to finish it off.

  6. Djokovic 5-7 7-6 (12-10) 6-7 (5-7) Thiem

    Me at 4-0 to Djokovic in that deciding tie-break: "Ah. It's falling apart from Dominic Thiem. A forehand goes way long. That could be that already."

    He sure proved me wrong.

    Dominic Thiem and Novak DjokovicGetty Images

  7. 'We will try and put on a great show'

    More from winner Dominic Thiem: "Either way we will have another first-time winner tomorrow. Both [Medvedev and Nadal] will fight 100% today and tomorrow.

    "I am looking forward a lot. It is the last match of a special but tough year for everyone. We will try and pout on a great show for everybody."

  8. I don't think Thiem could quite believe he won that.

    Dominic ThiemGetty Images

  9. 'I was just as tight as New York'

    ThiemGetty Images

    Winner Dominic Thiem: "For sure it was a mental battle. I was so tight in the second-set tie-break. To play these legends is always something special. Playing for the finals here at the ATP Final is also something very special.

    "I thought after my first big title in New York I would be more calm but that was a mistake. I was just as tight and nervous as before it was so much on the edge this match."

  10. Thiem reaches final

    Djokovic 5-7 7-6 (12-10) 6-7 (5-7) Thiem

    From 4-0 in the deciding tie-break, Thiem wins it 7-5. Remarkable. He's slumped in his seat looking to the sky.

    A sickener for Djokovic who leaves the court in a flash.

  11. game, set and match

    Game, set and match Thiem

    Djokovic 5-7 7-6 (12-10) 6-7 (5-7) Thiem

    WHAT A WIN FOR DOMINIC THIEM!

    How has he done that?!

  12. Djokovic saves match point

    Djokovic 5-7 7-6 (12-10) 6-6 (5-6) Thiem*

    Djokovic saves the first match point with an ace,

    What can Thiem do on his own serve?

    Match point number two

  13. Andrew Castle
    BBC Sport tennis commentator at the O2 Arena

    This is a joke, this tie-break!

  14. Deciding tie-break

    *Djokovic 5-7 7-6 (12-10) 6-6 (4-6) Thiem

    Smashed backhand winner by Dominic Thiem! Unreal!

    Match point Thiem

  15. Deciding tie-break

    *Djokovic 5-7 7-6 (12-10) 6-6 (4-5) Thiem

    ACE!

    From 4-0 down, Thiem is 5-4 up in this deciding tie-break.

  16. Deciding tie-break

    Djokovic 5-7 7-6 (12-10) 6-6 (4-4) Thiem*

    Oh, Thiem has done brilliantly to win this one too! It was a sensational return from Djokovic. My heart is going, never mind theirs.

  17. Deciding tie-break

    Djokovic 5-7 7-6 (12-10) 6-6 (4-3) Thiem*

    Thiem is back in it! Three points in a row for the Austrian.

    It a surprise error after a lengthy point from Djokovic.

  18. Tim Henman
    Former British number one on BBC One

    It doesn't matter what the score is, Thiem is going to carry on going for his shots. That was winner number 48.

  19. Deciding tie-break

    *Djokovic 5-7 7-6 (12-10) 6-6 (4-2) Thiem

    Thiem gets one of the mini-breaks back. He hits into one corner and then the other. Too good.

    Big point coming up after this quick breather...

  20. Deciding tie-break

    *Djokovic 5-7 7-6 (12-10) 6-6 (4-1) Thiem

    A much needed ace from Thiem. Still there's an awful lot to do from here.