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Sam Drury, Paul Battison, Bobbie Jackson and Millie Sian

  1. game, set and match

    Game, set and match - Osaka

    Sabalenka 2-6 6-7 (2-7) Osaka

    Aryna Sabalenka halts Naomi Osaka's progress for a second but the Japanese 14th seed seals the win on the next point.

    Naomi OsakaGetty Images

  2. Tie-break

    *Sabalenka 2-6 6-6 (1-6) Osaka

    Naomi Osaka has looked so cool and composed from the first point of this match and there's no switch up here.

    Osaka gets another double hold and is within touching distance of the quarter-finals.

    Osaka has five match points.

  3. Sabalenka 2-6 6-6 (1-5) Osaka*

    Tracy Austin
    Two-time Grand Slam champion on BBC One

    Aryna Sabalenka has lost both of her service points there.

    With the way Naomi Osaka has been serving, this is an uphill battle for her now!

  4. Auger-Aliassime breaks

    *Auger-Aliassime 6-7 (4-7) 7-6 (8-6) 6-3 2-1 Davidovich Fokina

    Not too long ago I thought this one was heading to a five-setter but Felix Auger-Aliassime has other ideas.

    After breaking for the first time in the match in the third set, the Canadian third seed as now broken at the start of the fourth.

    To say he's yet to drop serve in the entire tournament it could be a long way back for Alejandro Davidovich Fokina from here.

  5. Tie-break

    Sabalenka 2-6 6-6 (1-4) Osaka*

    Here we go.

    Naomi Osaka gets the first mini-break.

    Aryna Sabalenka gets too much on a forehand and it goes wide.

    Osaka takes control.

  6. Tie-break

    *Sabalenka 2-6 6-6 (1-2) Osaka

    A perfect response from Naomi Osaka.

    Osaka is showing no signs of feeling the pressure when she crashes over an ace for her second hold.

  7. 'This will be fascinating'

    Sabalenka 2-6 6-6 (1-0) Osaka*

    Sam Smith
    Former British number one on BBC One

    We wonder if Naomi Osaka could keep up the level she showed in the first set, I think we have our answer.

    This will be fascinating because Aryna Sabalenka has a phenomenal tie-break record. She has one 21 Grand Slam tie-breaks in a row, including one in the second round against McCartney Kessler.

  8. Tie-break

    Sabalenka 2-6 6-6 (1-0) Osaka*

    Aryna Sabalenka on the board.

  9. Get Involved

    After the exit of 2nd & 3rd seeds, this has the glamour and glitz of a proper final.

    Opeyemi, Lagos

  10. Osaka holds to force tie-break

    *Sabalenka 2-6 6-6 Osaka

    Naomi Osaka gives up the first point but her seventh ace of the match gets her to 30-15.

    Aryna Sabalenka's foot gives way as she looks to change direction and Osaka moves within a point of the hold.

    We're heading to a tie-break.

  11. 'Slowing in between points'

    Sabalenka 2-6 6-5 Osaka*

    Tracy Austin
    Two-time Grand Slam champion on BBC One

    It feels like Aryna Sabalenka is just slowing in between points, which I think is good.

    That first set just seemed to be like a whirlwind.

  12. Sabalenka holds

    Sabalenka 2-6 6-5 Osaka*

    Aryna Sabalenka has definitely found her groove on serve too now.

    Since saving two break points at 3-2, she has given up just two points across her following three service games.

    The top seed is guaranteed at least at tie-break for the second set now.

  13. Osaka holds

    *Sabalenka 2-6 5-5 Osaka

    Aryna Sabalenka turns away from the court and puffs out her cheeks after sending a forehand long to trail 40-15.

    It's another comfortable hold for Osaka - just four points dropped across five service games.

  14. 'Osaka knows she has to be serving with this quality'

    Sabalenka 2-6 5-5 Osaka*

    Tracy Austin
    Two-time Grand Slam champion on BBC One

    Naomi Osaka's serve quality has amazingly gone up even higher than the first set to 9.5 - that's just about off the charts. In her previous rounds, she's been hitting 9.1 which was already so much better than last year.

    She knows she has to be serving with this quality. She has lost very few points when she has got her first serve in, only five in total. It has always been one of Osaka's main strengths.

  15. Sabalenka 2-6 5-4 Osaka*

    Sam Smith
    Former British number one on BBC One

    The top seed Aryna Sabalenka hit the turbo button - and at last she sees out a stress-free service game!

    Sabalenka screamsGetty Images

  16. Game and third set Auger-Aliassime

    Auger-Aliassime 6-7 (4-7) 7-6 (8-6) 6-3 0-0 Davidovich Fokina*

    Felix Auger-Aliassime consolidates his break as he brings up set point and seals it in trademark style with an ace.

    The Canadian third seed is one set away from the quarter-finals.

  17. Sabalenka holds

    Sabalenka 2-6 5-4 Osaka*

    Aryna Sabalenka uses a body serve to get to 40-0 and then steps into the court to smash away a forehand winner for the hold.

    That's the best service game Sabalenka has put on all match.

    Naomi Osaka will serve to stay in the set.

  18. Get Involved

    Rooting for a third set between these two. What a contest! Osaka is on it but I feel Sabalenka could find another gear…

    Catie, Oxfordshire

  19. Osaka holds

    *Sabalenka 2-6 4-4 Osaka

    Aryna Sabalenka just can't get a foothold in games when Naomi Osaka is serving.

    Osaka hits her sixth ace for 40-15 and wraps up the hold on the next point.

  20. 'Athletes look under every stone for an answer'

    Sabalenka 6-2 4-3 Osaka*

    Tracy Austin
    Two-time Grand Slam champion on BBC One

    Naomi Osaka knows her emotions is something she's had to work on. Helen Miraska is the person she worked with for about three years on it. She said she felt like she could trust everybody on her team, but she just wanted somebody to unload everything on.

    Athletes look under every stone for an answer at times, you've got to hand it to them!