Summary

  • American 15-year-old Coco Gauff beats Russian teenager Anastasia Potapova 3-6 6-2 6-4 in US Open first round

  • British number one Kyle Edmund loses 3-6 7-6 (7-1) 7-5 5-7 6-2 to Spain's Pablo Andujar in the US Open first round

  • Top seed and defending champion Naomi Osaka comes from behind to beat Russia's Anna Blinkova in her opener

  • Three-time US Open champion Rafael Nadal faces Australia's John Millman at 00:00 BST

  • Wimbledon champion Simona Halep beats Nicole Gibbs

  • Use audio icon at the top of the page for BBC Radio 5 Live Sports Extra commentary

Live Reporting

Laura Savvas, Emma Sanders and Saj Chowdhury

  1. *Edmund 6-3 6-7 (1-7) 0-0 Andujar

    The first fist pump from Edmund in about an eon and he posts a winner - first class - down the line.

    40-15.

  2. *Edmund 6-3 6-7 (1-7) 0-0 Andujar

    BTW there was barely much of an applause for Pablo Andujar has he levelled.

    There isn't much atmosphere, full stop, on court 13.

  3. Where it might have turned for Andujar

    *Edmund 6-3 6-7 (1-7) 0-0 Andujar

    In the first set the Spaniard only managed to win 27% of points on his second serve.

    In the second set it improved to 56%.

    It's also fair to say that Edmund's form dramatically dipped.

  4. 'Nothing to hang her head about'

    Osaka 6-4 6-7 (5-7) 6-2 Blinkova

    Chanda Rubin
    American former world number six at Flushing Meadows

    Disappointment for Blinkova, but nothing to hang her head about, she played a fantastic match and we certainly expect to see a lot more of this young woman as the crowd gives her applause as she walks off the court.

    Impressive display but it was Osaka who raised her game at just the right moments in this match.

  5. Game and second set Andujar

    *Edmund 6-3 6-7 (1-7) Andujar

    Edmund's backhand has been awful today - worse than usual - he produces another error.

    It follows with one more shot into the net from the British number one.

    Edmund was a break up in that set and was cruising.

  6. Tie-break

    *Edmund 6-3 6-6 (1-5) Andujar

    The Spaniard delivers the ball to Edmund's weaker backhand and the Briton finds the netting again.

    Edmund's backhand pick up also fails to navigate its way over the net.

    This is bad from the Brit.

  7. 'Never been so nervous in my life'

    Osaka 6-4 6-7 (5-7) 6-2 Blinkova

    Defending champion Naomi Osaka speaking on Arthur Ashe: "I have a lot of really good memories here because I grew up in this area. I don't think I've ever been this nervous in my life.

    "I came off really slow and never really found my rhythm. I fought as hard as I could and managed to win.

    "You want to do well after you do well last year. I didn't smile much playing this match so hopefully I can change that in the next match.

    "It's kind of just a game so I have to remember that. It helps me a lot because I learn from the tougher matches. It helps me to prepare."

    Naomi OsakaGetty Images

  8. 'Osaka found a way to elevate her game and relax more and more'

    Osaka 6-4 6-7 (5-7) 6-2 Blinkova

    Chanda Rubin
    American former world number six at Flushing Meadows

    Sometimes, its getting through these types of matches, finding a way of elevating your game, that allows you to play better and better, and to relax more and more. Osaka, I think, was able to do that as the match went on, especially in the third set.

    It was still tense early on, but she was able to get that break of serve, get up 3-1 and that seemed to relax her more.

  9. Tie-break

    Edmund 6-3 6-6 (0-3) Andujar*

    Andujar is a mini-break up as Edmund finds the net with a forehand.

    Make that two mini-breaks as Andujar produces a stunning winner down the line.

  10. Tie-break

    Edmund 6-3 6-6 (0-1) Andujar*

    Andujar takes the first point with a great first serve - what a time do it.

  11. Edmund 6-3 6-6 Andujar*

    Edmund holds to love.

    It's tie-break time.

  12. game, set and match

    Game, set and match

    Osaka 6-4 6-7 (5-7) 6-2 Blinkova

    A stylish way to end - Osaka sprays a lovely backhand winner into the corner.

    Job done, into the next round. But my word, that was nervy!

    Naomi OsakaGetty Images

  13. *Edmund 6-3 5-6 Andujar

    Edmund has got 'tie-break eyes' as Andujar races to a 40-0 lead.

    But wait...what is this?!!!

    Edmund produces a drop-shot winner on his backhand.

    His first drop!!

    Andujar holds anyway.

  14. Osaka 6-4 6-7 (5-7) 5-2 Blinkova*

    Osaka is racing towards a first-round victory. A comfortable service hold and she's now one game away from the next stage.

    Talk about making hard work of it though!

  15. Edmund 6-3 5-5 Andujar*

    Edmund holds with a winner from the baseline.

    Relatively comfortable - the Briton will now have another chance to break the not-altogether-convincing Andujar serve.

  16. *Edmund 6-3 4-5 Andujar

    Edmund eases into a 30-0 lead then allows a return to drop thinking it would land wide - it didn't.

    30-15.

    40-15.

  17. 'Osaka has mixed her serve up beautifully'

    *Osaka 6-4 6-7 (5-7) 4-2 Blinkova

    Chanda Rubin
    American former world number six at Flushing Meadows

    Osaka has mixed her serve up beautifully, she's gone out wide a number of times. She's been keeping Blinkova off balance.

  18. *Edmund 6-3 4-5 Andujar

    Andujar now has the lead in this set.

    Edmund is under pressure to hold. The tables haven't quite turned - they're about halfway around.

  19. Edmund 6-3 4-4 Andujar*

    Andujar looks to his team as again he struggles to get over the line on his serve.

    Edmund has a great chance to bring up another break point but he's over-eager with a forehand that dips wide.

    He's not happy with himself.

    Advantage Andujar.

    Double fault.

    Deuce.

    EdmundGetty Images

  20. Osaka moves 4-1 up in decider

    Osaka 6-4 6-7 (5-7) 4-1 Blinkova*

    Osaka faces another break point but then puts down two aces in a row. Seriously!?

    But most importantly, the defending champion is back in control and leading 4-1 in the decider.