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Summary

  1. Andy Murray beats Marin Cilic 6-3 6-2
  2. Murray's first victory since becoming world number one
  3. Nishikori beat Wawrinka earlier in same group
  4. Group John McEnroe at London's O2 Arena

Live Reporting

By Saj Chowdhury

All times stated are UK

Get involved

  1. Covers on...

    Thanks again for joining us today.

    Come back on Tuesday for some more action from the ATP Finals in London.

  2. Coming up...

    View more on twitter

    We will have full coverage of that match. Nishikori played brilliantly against Wawrinka earlier on Monday - it promises to be a heck of a contest.

  3. That's quite a large tennis ball...

    Video content

    Video caption: ATP World Tour Finals: Five great shots as Novak Djokovic beats Dominic Thiem

    In case you missed it Novak Djokovic - now world number two (sorry Novak) - won his opening ATP Finals match on Sunday.

    After a bit of a blip in the first set Djoko fought back to defeat Dominic Thiem 6-7 (10-12) 6-0 6-2.

    Catch up with some of the action above.

  4. Nishikori overwhelms underwhelming Wawrinka

    Video content

    Video caption: ATP World Tour Finals 2016: Five best shots as Kei Nishikori beats Stan Wawrinka

    Earlier today, world number three Stan Wawrinka was pretty awful in his opening group match against world number five Kei Nishikori.

    The US Open champion lost 6-2 6-3. Trounced really. He didn't bother talking to the straight-off-court TV team. I don't blame him.

    Read the report.

  5. 'I played one of my best matches here'

    Murray 6-3 6-2 Cilic

    Andy Murray fans celebrate

    Andy Murray speaking to Sky Sports: "It's a great atmosphere and I think I played one of my best matches here. I'm going to keep working hard to give people moments like this.

    "I have confidence from winning matches and I was a little bit more solid when I had opportunities."

  6. Post update

    Miles Maclagan

    Former British Davis Cup player on Radio 5 live sports extra

    Andy Murray

    That was a very strong performance from Andy Murray. He'll look to improve his serve a little bit but mentally more than anything else was the difference. He has this warrior mentality.

  7. 'Murray will be near his best by the latter stages'

    Murray 6-3 6-2 Cilic

    Piers Newbery

    BBC Sport in London

    It was as much about the occasion as the performance, and Murray did his bit by getting off the mark with a win as world number one.

    Eleven winners to 19 errors tells its own story but the Scot improved markedly in the second set, and looked somewhere near his best by the latter stages.

    Next up will be Kei Nishikori on Wednesday, and another win should be enough to get Murray to the weekend. Calculators at the ready.

  8. 'Tough to start against the best in the world'

    Murray 6-3 6-2 Cilic

    Marin Cilic speaking to Sky Sports: "I think I played quite well. I was unfortunate in the first set on a few points. Overall I played well and enjoyed the atmosphere. It was a big pleasure for me.

    "It was tough to start straight away against the best in the world.

    On the colourful shorts: "The shorts are something different and a few colours doesn't hurt."

    A few colours Marin???!!

  9. Post update

    David Law

    Radio 5 live sports extra commentator

    Marin Cilic

    This crowd is treating Murray like a rock star. I'm not sure Cilic can believe the scoreline - he's played quite well - but Murray has been fabulous.

  10. Game, set and match

    Murray 6-3 6-2 Cilic

    Murray must be incredibly frustrating to play against when he starts to read everything you throw at him.

    Cilic at the net thinks he's won the point but Murray passes him and then makes an error after misjudging Murray's angled backhand volley at the net.

    The scores move to 40-0 before taking the first match point as Cilic's return finds the middle of the net.

    That's it. Murray wins his 20th successive match. Pretty incredible.

  11. Post update

    Miles Maclagan

    Former British Davis Cup player on Radio 5 live sports extra

    Murray is now putting daylight between himself and the world number seven. He's not played great tennis but he's getting the job done.

  12. Murray breaks again

    *Murray 6-3 5-2 Cilic

    Andy Murray

    He's in the zone.

    Murray stands just inside the baseline after his initial return on Cilic's serve and hits a forehand to make it 0-15 before Cilic falters once more. 

    The Croat finds the net rather than the other side of the court and it's break point again.

    Murray takes it with a winner rather than an error - an excellent fly-swat of a forehand return.

    He just needs to hold now.

  13. Post update

    Miles Maclagan

    Former British Davis Cup player on Radio 5 live sports extra

    Andy Murray

    There have been some sticky moments but Murray is like a boxer who draws your swings and punches and then hits you with jabs from the left and then the right.

    Murray likes his boxing - it's a very Floyd Mayweather-style performance.

  14. Post update

    Murray 6-3 4-2 Cilic*

    Andy Murray fans applaud

    Murray again changes the pace with a delicate backhand from back of the court which Cilic again fails to read - 15-0.

    An error by the Scot and a Cilic winner follows, but Murray counters with a brilliant first serve - 30-30.

    Cilic then makes two unforced errors from the back of the court - long returns - as Murray holds. 

    He's two games away from winning the first match. Dogged.

  15. Post update

    David Law

    Radio 5 live sports extra commentator

    When Lendl is around you always feel that Murray goes after the forehand more. He just seems to not rally as much but try to put the ball away.

  16. Murray breaks

    *Murray 6-3 3-2 Cilic

    Andy Murray celebrates

    Has the Scot got first wind?

    He wins the opening point with a great return down the line before forcing an error from Cilic, who slaps his forehand into the net - it's 15-30.

    Cilic then makes another error after an intriguing rally which saw Murray again change the pace.

    Two break points. Murray makes another challenge - he gets it wrong again, as Cilic's serve in called in.

    But he converts the remaining break point by changing the trajectory of his return which wrongfoots the Croat.

  17. Post update

    Murray 6-3 2-2 Cilic*

    Murray's first serve percentage before this game in this set was 44% and points won on it is at 50%. That's "real sad" to quote a president elect.

    Nevertheless, he wins this service game to love. The first time he's managed that in this contest.

    About time.

  18. Post update

    Miles Maclagan

    Former British Davis Cup player on Radio 5 live sports extra

    The players are not giving an inch and this is a real contest.

  19. Post update

    *Murray 6-3 1-2 Cilic

    Marin Cilic serves

    This is Cilic's best service game so far. One serve and volley winner and then one from the back of the court.

    It's 40-15. This is a breeze for the Croat.

    Ahh...

    Murray punishes Cilic for weak execution at the net before punishing his opponent again with a great passing shot. Deuce.

    But two big serves gets Cilic out of that spot of bother.

    The Croat only won 62% of points on his first serve in the opening set - that's up to 75% in the second.

  20. Post update

    David Law

    Radio 5 live sports extra commentator

    Marin Cilic is such a nice bloke but right now he's a bit frightening. He's stalking the baseline. These are two big players going toe to toe.