Postpublished at 18:26 British Summer Time 7 September 2019
Jonathan Jurejko
BBC Sport at Flushing Meadows
Somewhere in that lot is a British flag...
Bianca Andreescu beats Serena Williams 6-3 7-5 to win US Open women's singles title
Canada's Andreescu, 19, wins maiden Grand Slam title
American Williams had been aiming for record-equalling 24th Grand Slam singles title
Get involved: #bbctennis
Earlier, Britain's Jamie Murray and Bethanie Mattek-Sands beat Chan Hao-ching and Michael Venus 6-2 6-3 in US Open mixed doubles final
Click on the button at top of page to listen to BBC Radio 5 Live commentary
Katie Falkingham and Laura Savvas
Jonathan Jurejko
BBC Sport at Flushing Meadows
Somewhere in that lot is a British flag...
Chan/Venus 2-6 3-6 Mattek-Sands/Murray
Bethanie Mattek-Sands on the court: "Jamie, you were on fire these whole two weeks. We have a lot of fun, he keeps me pretty grounded. I'm the energetic one, in case you haven't noticed.
"Amazing two weeks. I had surgery earlier this year so I was on the comeback trail again. Let's not make that a routine, hopefully that's the last surgery.
"There's things you can control and things you can't. I have Jamie backing me up so I feel like I can go for anything."
Chan/Venus 2-6 3-6 Mattek-Sands/Murray
Chan speaking on court: "I'm very happy to play again with Michael. It's nice to come back on this court and play in the final. We hope we can come back again and win this match."
Venus: "I don't know where to start. They were all over us today so congratulations guys. Thank you everyone for coming out, unbelievable atmosphere here. I love playing here, so thank you."
Chan/Venus 2-6 3-6 Mattek-Sands/Murray
Seven Grand Slams now for Jamie Murray, and a fourth US Open title in four years.
Smashing it?
I think so.
Chan/Venus 2-6 3-6 Mattek-Sands/Murray
Aces
Chan/Venus - 3
Mattek-Sands/Murray - 1
Double faults
Chan/Venus - 2
Mattek-Sands/Murray - 1
Unforced errors
Chan/Venus - 20
Mattek-Sands/Murray - 11
Winners
Chan/Venus - 16
Mattek-Sands/Murray - 22
Chan/Venus 2-6 3-6 Mattek-Sands/Murray
Mattek-Sands pulls out her phone for selfie time, as the pair produce some beaming smiles for the 'gram.
It took the pair exactly an hour to defend the crown.
Chan/Venus 2-6 3-6 Mattek-Sands/Murray
They've done it!
Jamie Murray and Bethanie Mattek-Sands defend their US Open mixed doubles title!
What a performance.
*Chan/Venus 2-6 3-5 Mattek-Sands/Murray
Michael Venus hits a backhand into the net, and the crowd goes wild.
59 minutes on the clock and Murray and Mattek-Sands have championship point.
*Chan/Venus 2-6 3-5 Mattek-Sands/Murray
Venus produces a service winner and they're suddenly 30-15 up.
Chan hits a backhand volley into the net and it's level on 30-30.
Two points away.
*Chan/Venus 2-6 3-5 Mattek-Sands/Murray
The top seeds' service game begins with a forehand winner from Murray.
They're three points away from defending their title.
Jonathan Jurejko
BBC Sport at Flushing Meadows
Murray and Mattek-Sands high five and sprint to the baseline in the shade. This could all be over without having to take their sets again...
*Chan/Venus 2-6 3-5 Mattek-Sands/Murray
An 11th unforced error for Murray and Mattek-Sands gives the top seeds a temporary lifeline, but Murray smashes a backhand volley to go 40-15 up.
Venus appears frustrated as he stands with his hand on his hip when he hits a forehand wide.
Chan and Venus will now serve to stay in this final.
Chan/Venus 2-6 3-4 Mattek-Sands/Murray*
It's the ttird time Murray and Mattek-Sands have been ahead in this second set.
The American is serving and the crowd are right behind her.
Michael Venus at the net just isn't happening as of late. He misses a forehand volley by quite a distance. 30-0.
Chan/Venus 2-6 3-4 Mattek-Sands/Murray*
The top seeds lose the break with a backhand forced error.
4-3 now to Murray and Mattek-Sands, 52 minutes in.
Can Chan and Venus come back from this?
*Chan/Venus 2-6 3-3 Mattek-Sands/Murray
Murray comes to the net and produces a forehand volley winner. Easy.
Chan tries to get on the receiving end of an excellent Murray shot, but she hits it wide.
Two break points.
*Chan/Venus 2-6 3-3 Mattek-Sands/Murray
A forehand volley winner gives Murray and Mattek-Sands a 15-0 lead, before Chan hits a shot too long.
Two errors from Chan and Venus gives Murray and Mattek-Sands their first hold of the set and it's 3-3 in this second set.
That's a rather retro-looking outfit from Bethanie Mattek-Sands, there.
The USA flag in the form of lips on a tank top.
She's giving me Rolling Stones vibes. Big fan.
Jonathan Jurejko
BBC Sport at Flushing Meadows
In fact, the lower tier is so busy that people with tickets are finding another bum already in the seat. That also includes the media area, forcing the British journalists - and some stroppy American fans - to stand in a gangway trying to watch.
Chan/Venus 2-6 3-2 Mattek-Sands/Murra*
Venus loses a point with a double fault, but the pair easily hold their serve as Murray drives a shot into the net.
It's the first hold of the second set.
3-2
*Chan/Venus 2-6 2-2 Mattek-Sands/Murray
Wow. Michael Venus wasn't playing around then.
The top seeds break after a beautiful forehand volley winner.
2-2.