Summary

  • Serena Williams beats Greece's Maria Sakkari in three sets to reach quarter-finals

  • Six-time US Open champion to face Bulgaria's Tsvetana Pironkova on Wednesday

  • Second seed Dominic Thiem beats Felix Auger Aliassime to reach men's last eight

  • Jamie Murray and Neal Skupski lose doubles quarter-final to Bruno Soares and Mate Pavic

Live Reporting

Michael Emons

  1. Sakkari 3-6 6-6 Williams

    A fine winner from Sakkari ends Williams' run of three points in a row. Two more for Sakkari and it's into a deciding set. 5-3

  2. Sakkari 3-6 6-6 Williams

    Sakkari into the net, advancing with a forehand, and her 4-0 lead has quickly become 4-3.

  3. Sakkari 3-6 6-6 Williams

    A huge scream from Williams after a delightful backhand winner, 4-1 Sakkari.

    The American takes the next one too, 4-2.

  4. Sakkari 3-6 6-6 Williams

    A low backhand from Wiliams is into the net and that's a 4-0 advantage in this tie-break for the Greek.

  5. Sakkari 3-6 6-6 Williams

    Williams, crouching low, sends a forehand into the net to give Sakkari a mini-break in the tie-break, 2-0 Sakkari.

  6. Tie-break time

    Sakkari 3-6 6-6 Williams

    David Law
    BBC Radio 5 Live Sports Extra tennis commentator

    How will Sakkari deal with having not taken those set points?

  7. Naomi Osaka, with a creepy-looking smiley mask on, is among those watching on, as is Yulia Putintseva. A Williams ace takes us to a second-set tie-break.

  8. Sakkari 3-6 6-5 Williams*

    Williams sends a two-handed forehand into the net for a second set point for the 15th seed, but Sakkari, once again, can't take it as Williams comes up with a perfect serve. Deuce again, two set points wasted for Sakkari.

  9. Sakkari 3-6 6-5 Williams*

    Sakkari with a set point, but she can't take it as she sends her forehand return long. Deuce.

  10. Sakkari opts to attack but a cross-court forehand is too far. A fortunate bounce off the net gives Sakkari a set point, with Williams unleashing a high-pitched shriek in anger.

  11. Sakkari 3-6 6-5 Williams*

    After a poor shot at the net from Sakkari, missing what looked a routine put-away, she then snatches the next two points, 15-30, Sakkari two points from the second set.

  12. Sakkari 3-6 6-5 Williams*

    Naomi Cavaday
    BBC Radio 5 Live Sports Extra tennis commentator

    If Williams does not come through this set, that is a huge boost for Sakkari. What if she can't break Sakkari in the third set? That will be very interesting.

  13. Sakkari 3-6 6-5 Williams*

    Williams goes long and that's game Sakkari. A Williams hold now takes us to a tie-break.

  14. *Sakkari 3-6 5-5 Williams

    A two-handed backhand down the line, immediately followed by another one in the next point, takes Sakkari to 40-30.

  15. *Sakkari 3-6 5-5 Williams

    A chance now for Williams, who is two points away from a critical break of serve at the business end of the second set.

  16. *Sakkari 3-6 5-5 Williams

    A hold for Williams. 5-5

  17. Sakkari 3-6 5-4 Williams*

    Sakkari is not too pleased with her efforts so far as she starts talking to herself after netting a return, 40-15.

  18. *Sakkari 3-6 5-4 Williams

    The 15th seed maintains the pressure as Williams will now have to hold her serve to stay in the second set.

  19. 'Win against Stephens was Williams' best'

    *Sakkari 3-6 4-4 Williams

    Naomi Cavaday
    BBC Radio 5 Live Sports Extra tennis commentator

    The win against Sloane Stephens in the third round is Williams' best since the return. It was definitely a big step up and the fact that she was able to demand it from herself in the middle of the match was a real positive.

  20. *Sakkari 3-6 4-4 Williams

    Williams takes the opening three points of her next service game and Sakkari tries to motivate herself by thumping her own leg a few times, but it doesn't stop the American with another hold. One break could be the difference in the second set.