Summary

  • Korea's Chung beats Djokovic 6-7 (4-7) 5-7 6-7 (3-7)

  • Djokovic struggling with elbow injury in fourth-round match

  • World number 97 Tennys Sandgren beats fifth seed Dominic Thiem

  • Halep beats Osaka to reach last eight

  • Federer wins in straight sets

  • Kerber and Keys also through

  1. That's just not cricketpublished at 08:09 Greenwich Mean Time 22 January 2018

    Sorry England cricket fans, you're probably sick of the sight of Steve Smith after that Ashes mauling.

    But here he is catching up with another man who knows how to hit a ball. Some hand-eye genes in that pairing...

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  2. Postpublished at 08:07 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    How're your nerves, Hyeon Chung?

    The 21-year-old from South Korea trots on to the Rod Laver Arena to rapturous applause from the Melbourne crowd.

    The noise is cranked up a little as Novak Djokovic follows him on.

  3. In good companypublished at 08:04 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    This will be Novak Djokovic's 950th Tour-level match.

    He is also bidding to reach his 10th Australian Open quarter-final, which would take the 30-year-old joint second on that list with Stefan Edberg and Rafael Nadal in the Open Era, and only behind Roger Federer with 14.

    Should he beat Hyeon Chung, Djokovic would also reach a 40th career Grand Slam quarter-final, taking him just one behind second-placed Jimmy Connors in that particular list.

    You can probably guess who tops that one too...

    *Spoiler. It's Fed.

  4. 'Forced to be cautious'published at 08:01 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    DjokovicImage source, Getty Images

    Here's what Novak Djokovic had to say about that injury lay-off...

    "These kind of circumstances in which I'm in at the moment are quite different," added Djokovic.

    "I've never faced a situation where I didn't compete six months.

    "That's why I'm kind of forced to be very cautious of what happens day-to-day, be dedicated to my body and training."

  5. Thiem breaks backpublished at 08:01 Greenwich Mean Time 22 January 2018

    *Thiem 2-6 6-4 2-3 Sandgren

    The big pump is out from Dominic Thiem. He hits straight back against Tennys Sandgren. American Sandgren is now having some rather aggressive verbals with the umpire over someone coughing in the crowd.

  6. Injury woes behind Djokovic?published at 07:57 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    DjokovicImage source, Getty Images

    This is Novak Djokovic's first event since Wimbledon last year after a six-month lay-off with an elbow injury.

    But it was the Serb's lower back and leg that needed treatment during the third-round win over Albert Ramos-Vinolas.

    "It's nothing major to be concerned about. It's things that surface every day. I guess it's normal," said the 30-year-old.

  7. Like London buses...published at 07:56 Greenwich Mean Time 22 January 2018

    You wait years for a British hopeful at a Grand Slam and then three come along at once...

    Or something like that. Here's Yorkshireman Kyle Edmund posing next to a London bus, naturally.

    We'll be keeping you right up to speed with the British number two's quarter-final against Grigor Dimitrov from around 03:30 GMT on Tuesday.

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  8. Postpublished at 07:56 Greenwich Mean Time 22 January 2018

    Meanwhile, if, somehow, you've managed to miss Kyle Edmund's progress this week, then let me just remind you the 22-year-old British number two is in quarter-final action tomorrow.

    Which leads me to this tweet...

  9. Sandgren breaks against Thiempublished at 07:54 Greenwich Mean Time 22 January 2018

    Thiem 2-6 6-4 1-3 Sandgren*

    This is quite a battle for going on between Dominic Thiem and Tennys Sandgren. When fifth seed Thiem took the second set you'd have fancied he'd push on for victory but his unseeded American opponent has broken serve in the third set.

    Sandgren leads 3-1.

  10. Chung in profilepublished at 07:52 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    ChungImage source, EPA

    Hyeon Chung the history maker? Maybe. The 21-year-old is looking to become the first Korean in either the men's or women's draws to reach a Grand Slam quarter-final.

    His previous best result at a major was making the third round at Roland Garros last year.

    He's ranked 58th in the world, but warmed up for this year's Australian Open by reaching the quarter-finals in Auckland.

  11. How they got here...published at 07:49 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    Novak Djokovic saw off Albert Ramos-Vinolas 6-2 6-3 6-3 in the last round, having already come through 6-1 6-2 6-4 against Donald Young and beaten Gael Monfils 4-6 6-3 6-1 6-3 in the searing Melbourne heat.

    Hyeon Chung has faced both Zverevs this tournament.

    He progressed against Mischa when the German retired due to a viral illness, and beat fourth seed Alexander 5-7 7-6 (7-3) 2-6 6-3 6-0.

    Daniil Medvedev was the other man to fall to Chung, with the Korean winning 7-6(7-4) 6-1 6-1.

  12. Chung's time?published at 07:46 Greenwich Mean Time 22 January 2018

    Djokovic v Chung

    ChungImage source, Reuters

    The young pretender against the experienced pro? The man on his best ever Grand Slam run against the one with 12 majors to his name?

    Whatever the narrative, this should be an intriguing match up as Hyeon Chung meets Novak Djokovic in the last 16 of the Australian Open.

    Is it time for Chung to cause a stir? Or Will Djokovic remain on course for a seventh title in Melbourne?

    DjokovicImage source, Getty Images
  13. Postpublished at 07:46 Greenwich Mean Time 22 January 2018

    Thanks Matt for that stellar stint, now let's have a look at this last-16 meeting...

  14. Postpublished at 07:44 Greenwich Mean Time 22 January 2018

    So the women's world number one is through to the last eight.

    It'll soon be time for Novak Djokovic to head out onto Rod Laver Arena to kick off the night session against one of the hottest young players in the game.

    Alex Bysouth will expertly take you through it.

  15. game, set and match

    Game, set and matchpublished at 07:41 Greenwich Mean Time 22 January 2018

    Murray/Chan 6-7 (8-10) 4-6 Sanders/Polman

    Jamie Murray is out of the mixed doubles competition!

    He won two Grand Slams in a row with Martina Hingis to end 2017 but is now out in the second round in Melbourne.

    The Scot and his new partner Latisha Chan have lost in straight sets to Storm Sanders and Marc Polmans.

  16. Postpublished at 07:36 Greenwich Mean Time 22 January 2018

    It'll be Barbora Strycova or sixth seed Karolina Pliskova next for Simona Halep. Those two play later on Rod Laver.

  17. Game and second set Thiempublished at 07:36 Greenwich Mean Time 22 January 2018

    Thiem 2-6 6-4 Sandgren

    Dominic Thiem has fought back to take the second set and level things up against American Tennys Sandgren.

    The fifth seed takes it 6-4 against the world number 97.

    We could be in this one for the long haul...

  18. Postpublished at 07:35 Greenwich Mean Time 22 January 2018

    Simona Halep, speaking after her victory: "It was a great match. I am really happy to be back in the quarter-finals. I didn't expect this at the start of the tournament because of the injury. The tournament has been a marathon for me. I am just trying to enjoy it and give everything."

  19. Postpublished at 07:34 Greenwich Mean Time 22 January 2018

    Halep 6-3 6-2 Osaka

    Simona Halep looks very content with her night's work as the pair shake hands at the net. A smile on her face but no big celebration.

    Halep knows that with so many seeds out in the women's draw this is a big chance for her maiden Grand Slam title.

  20. Postpublished at 07:32 Greenwich Mean Time 22 January 2018

    Russell Fuller
    BBC tennis correspondent at Melbourne Park

    Halep's pleased to get off court quickly - she spent enough time out there in the first week. That stress is gone now and the promise of the second week is here.