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 3-2 Andujar*

    To back up the "Edmund is doing well at the net" claim - the stats tell us that he's won six points from six shots at the net.

    So, well done us. And Kyle.

  2. Osaka 6-4 3-3 Blinkova*

    Again, Osaka has to fight from 30-0 down but this time gets the job done more smoothly. She's still not comfortable though - stretching her knee and swinging her racquet in a deliberate motion in between points.

    These stats alone tell the story of her second set.

    .Live Tennis

  3. Edmund 3-2 Andujar*

    Edmund is getting some joy coming into the net.

    He slaps home another winner to set himself up at 40-15, and then forces an error from Andujar after sending the Spaniard out wide.

  4. *Edmund 2-2 Andujar

    The Spaniard finally holds as Edmund sends a backhand slice into the net.

    That game lasted almost eight and a half minutes.

    Seriously lads!!

  5. Edmund 2-1 Andujar*

    The Briton looks for Hollywood with a forehand crosscourt winner but finds Abbey Wood.

    Deuce again.

  6. *Osaka 6-4 2-3 Blinkova

    For the third service game in a row, Blinkova holds to love. She has had at least one break point in each of Osaka's service games in this set - can she get another one and make it count this time? The Russian is definitely carrying all the momentum now.

  7. Edmund 2-1 Andujar*

    Another break point for Edmund as Andujar puts too much juice on his shot from the back.

  8. Edmund 2-1 Andujar*

    The Spaniard is making heavy work of this - we're at something like deuce 400.

    Edmund will be loving this right now.

  9. Jonathan Jurejko
    BBC Sport at Flushing Meadows

    US OpenBBC Sport

    While it is certainly worth Kyle Edmund seeking protection from an umbrella, the heat and humidity is nowhere near it was 12 months ago.

    Edmund, if memory serves, played on the same outside court in his first-round exit to Paolo Lorenzi last year - struggling in the sort of sun which could microwave a dinner.

    Much cooler and comfortable for everyone.

  10. Law & order

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  11. 'Her left knee will test her'

    Osaka 6-4 2-2 Blinkova*

    Chanda Rubin
    American former world number six at Flushing Meadows

    She bent over to adjust the brace [on her knee]. You wonder how much this match will take a toll on anything she's been feeling in that knee. She did retire form her last match in Cincinnati because of it; that was in the quarter finals.

    The left knee has begun to bother her more and more, especially in a match like this where she's had to move more and cover a lot of court and been under some pressure; that will be another test for her.

  12. Osaka 6-4 2-2 Blinkova*

    Osaka finished the opening set strongly but she's dipped again in this second set. Her first serve success rate is at a very low 37% and it's partly the reason she had to face another two break points in that game.

  13. Edmund 2-1 Andujar*

    It's saved as Edmund goes long from the back.

  14. Edmund 2-1 Andujar*

    Now, Pablo Andujar has heavy strapping on his right elbow - the 33-year-old had surgery on that same arm in March 2016, November 2016 and April 2017!!

    Incredible that he's still playing top-level tennis.

    It's another break point for Edmund as Andujar lands his second serve wide.

  15. Jonathan Jurejko
    BBC Sport at Flushing Meadows

    Whether or not 15-year-old Coco Gauff should be thrust into the US Open spotlight has been a debate in recent weeks.

    Former US Open champion Andy Roddick said he thought she should be given "space to grow", although her match against Russia's Anastasia Potapova she has been put third on Louis Armstrong Stadium.

    Nevertheless the buzz around America's latest tennis phenomenon is inescapable.

    This young programme seller says she picks this image of Gauff to stand on her stall every day because the teenage wildcard is "super cool".

    US Open

  16. Edmund 2-1 Andujar*

    It's about 23C at Flushing Meadows - apparently - which is nothing like the oppressive conditions of 'Oppressive Conditions, New York, 2018'.

    It was more humid than all the Finnish saunas glued together.

    Edmund holds serve.

  17. 'Serve needs to be more rhythmic'

    *Osaka 6-4 1-2 Blinkova

    Chanda Rubin
    American former world number six at Flushing Meadows

    Osaka can improve her serve - she can make it a little more rhythmic. That's an area she struggles with a little bit, certainly, in her tennis.

  18. Edmund breaks back

    *Edmund 1-1 Andujar

    The Brit, who was born in Johannesburg, again comes to the net to punch home a winner.

    Andujar levels but then makes his own error on a double-handed backhand.

    Edmund takes a dose of mojo to produce a brilliant double-handed backhand winner.

    Two break-back points - Edmund takes the second.

  19. Osaka holds off break point

    Osaka 6-4 1-1 Blinkova*

    Facing a break point, and on her second serve, Osaka strikes forehand after forehand cleanly through to the corners to win the point.

    She eventually holds with her third ace of the match. A bit nervy. But job done.

  20. 'We hope she can settle in enough to play her best tennis'

    *Osaka 6-4 0-1 Blinkova

    Chanda Rubin
    American former world number six at Flushing Meadows

    You think about her skill set, how big she hits the ball, she's a nice mover, I think she also has a bit of elasticity around the court.

    She can defend; she doesn't have the speed of Simon Halep, but it is tough to get the ball by her.

    We just hope that she is okay and can settle in enough to play her best tennis because we've seen the results when she does.