Summary

  • Japan's Naomi Osaka through to first Grand Slam final

  • 20th seed beats 2017 finalist Madison Keys 6-2 6-4

  • Osaka will face 23-time Grand Slam champion Serena Williams on Saturday

  • Williams beats Latvia's Anastasija Sevastova 6-3 6-0

Live Reporting

Emma Sanders and Matthew Henry

  1. Keys 2-6 3-4 Osaka*

    Osaka is talking to herself constantly between points. A motivational fist pump and a few slaps of her thighs.

    She wants this badly.

  2. Keys holds

    Keys 2-6 3-4 Osaka*

    Keys is having none of it.

    A few smashing serves, a forehand winner and a long return from Osaka gives Keys a comfortable hold.

  3. *Keys 2-6 2-4 Osaka

    Osaka's mum looks absolutely terrified!

    A break here would calm the nerves...

  4. Osaka holds

    *Keys 2-6 2-4 Osaka

    They are testing the lines but Keys folds first, going long with her forehand.

    Osaka holds. She is two service holds away from the US Open final.

  5. Keys 2-6 2-3 Osaka*

    Lots of chatting in the stadium following that changeover.

    But there is still a tennis match going on, despite many appearing to be oblivious to it.

    Keys' backhand winner takes her to 30-30 but Osaka opens up to smash a cross-court forehand.

    The American goes one better with a double-handed backhand into the far corner. Deuce.

    The players are literally running from corner to corner. Unbelievable stuff!

  6. Keys holds

    Keys 2-6 2-3 Osaka*

    The two players are going at it now.

    Some smashing forehands push each other back deeper and deeper until Keys unleashes a ferocious double-handed backhand winner.

    Pick that one out!

    She holds to love.

  7. Osaka holds

    *Keys 2-6 1-3 Osaka

    Two excellent forehands from Osaka as she opens her shoulders to swing it across court before smashing into the opposite space.

    Another smart forehand lands on the baseline behind Keys but the American's thumping return takes the paint off the line on her next return.

    Osaka then whips a service winner.

  8. Russell Fuller
    BBC tennis correspondent on 5 live sports extra at Flushing Meadows

    Madison Keys has woken up. Osaka will have to stay right on it if she wants to reach the final.

  9. Keys holds

    Keys 2-6 1-2 Osaka*

    Another unforced error from Keys. That's 25 in the game.

    And it gives Osaka 0-30.

    She recovers to smash a lovely forehand winner down the line. Another smart serve follows and Osaka returns long.

    And what a shot! A sensational forehand gives Keys the hold. *FIST PUMP*

  10. *Keys 2-6 0-2 Osaka

    Well, that was fun.

    Over to you Madison.

  11. Jeff Tarango
    Former professional tennis player on BBC Radio 5 live sports extra

    That is a wow, wow game.

  12. Osaka holds

    *Keys 2-6 0-2 Osaka

    Keys' forehand return flies across court but Osaka reaches it. She lifts it over the net and Keys reacts to volley but it's long.

    Advantage Osaka...

    And a long forehand from Keys! Osaka hops with joy and another fist pump is directed towards her coaches box.

  13. Keys 2-6 0-1 Osaka*

    Break point number 6 arrives for Keys...

    But Osaka pings another ace down the middle. Seriously?!

  14. Keys 2-6 0-1 Osaka*

    Wow! A second serve ace down the T from Osaka!

    Keys laughs. What can you do?

  15. Keys 2-6 0-1 Osaka*

    Game duration is now 10 minutes...

    Break point number 5 for Keys.

  16. Keys 2-6 0-1 Osaka*

    Advantage Keys!

    Another excellent rally ends in a cross-court volley from Keys which Osaka won't reach.

    Osaka pulls out a huge serve which forces Keys into the splits. Deuce again!

  17. Keys 2-6 0-1 Osaka*

    Keys immediately responds to take the advantage. She returns the next serve and approaches the net but Osaka pulls out a sublime backhand pass down the line.

    Deuce.

    Osaka serves out wide but Keys smashes an unbelievable forehand winner.

    Fantastic tennis!

  18. Keys 2-6 0-1 Osaka*

    This is awesome!

    Osaka and Keys lash forehand to forehand before the American eventually smashes hers into the net.

    Enthralling! Deuce.

  19. Break point

    Keys 2-6 0-1 Osaka*

    Osaka goes long. Break back point for Keys.

  20. Keys 2-6 0-1 Osaka*

    Osaka's backhand is long but she bounces back to take advantage. Then she is taken back to deuce as Keys lands a wonderful drop shot over the net.

    Deuce.