Live Reporting
Becky Grey and Alex Bysouth
Postpublished at 20:35 British Summer Time 31 August 2021
20:35 BST 31 August 2021
Naomi Broady
British player on BBC Radio 5 Live Sports ExtraZvonareva is is doing a good job of fighting back.
She has had a really long journey. It takes some serious guts and determination to get back to where she is.
Postpublished at 20:34 British Summer Time 31 August 2021
20:34 BST 31 August 2021
*Barty 6-1 5-6 Zvonareva
Barty was serving for the match.
Now she's serving to stay in this set.
Zvonareva holdspublished at 20:33 British Summer Time 31 August 2021
20:33 BST 31 August 2021
*Barty 6-1 5-6 Zvonareva
MASSIVE hitting from Zvonareva.
Anything Barty could send over, she whacked right back. And eventually it's too much for the Australian as she bats the ball into the net to bring up game point.
A speedy serve gives Zvonareva a 6-5 lead in the second set.
Postpublished at 20:32 British Summer Time 31 August 2021
20:32 BST 31 August 2021
Laura Robson
Former British number one on BBC Radio 5 Live Sports ExtraYou forget sometimes that the top players are still human - an example of that was Barty in the final at Wimbledon, she ended up winning but all her opponents will have seen that and think 'there's a chance...'
Postpublished at 20:31 British Summer Time 31 August 2021
20:31 BST 31 August 2021
Barty 6-1 5-5 Zvonareva*
Zvonareva desperately defends and it pays off as Barty loops a forehand long for 15-15.
If the Russian cannot back up this break, she's easy prey for the world number one surely.
Zvonareva breakspublished at 20:29 British Summer Time 31 August 2021
20:29 BST 31 August 2021
Barty 6-1 5-5 Zvonareva*
Ouch.
Barty gives away the break with a double fault. We're back on serve.
This has been such a dominant match for the Australian, surely she's not going to slip now.
Postpublished at 20:28 British Summer Time 31 August 2021
20:28 BST 31 August 2021
*Barty 6-1 5-4 Zvonareva
Well, well, well.
Zvonareva keeps up the pressure and has two break points.
Oh wait, excellent serve from Barty. One break point.
Postpublished at 20:27 British Summer Time 31 August 2021
20:27 BST 31 August 2021
Laura Robson
Former British number one on BBC Radio 5 Live Sports ExtraAt times, when you are nervous you don't need your coach on the side getting excited about things.
How you get on off the court makes such a big difference, especially at the moment when you are travelling in one team and just can't get away from them!
Postpublished at 20:27 British Summer Time 31 August 2021
20:27 BST 31 August 2021
*Barty 6-1 5-4 Zvonareva
Barty kicks things off with a 110mph serve down the middle. Zvonareva gets it back but the Russian is too off balance to compete. 15-0.
Zvonareva gets two back as unforced errors suddenly find their way into the world number one's game. 15-30...
Postpublished at 20:25 British Summer Time 31 August 2021
20:25 BST 31 August 2021
Naomi Broady
British player on BBC Radio 5 Live Sports ExtraAsh Barty is one of those annoying people who whatever sport they do they are good at it and will beat you at it!
Postpublished at 20:24 British Summer Time 31 August 2021
20:24 BST 31 August 2021
*Barty 6-1 5-4 Zvonareva
Barty lets her dominance slip slightly with the odd backhand into the net as Zvonareva gets a hold.
The Australian is happy to serve this one out it seems. She'll try and do that next.
Postpublished at 20:20 British Summer Time 31 August 2021
20:20 BST 31 August 2021
Barty 6-1 5-3 Zvonareva*
Barty is 30-0 up quick as a flash before a couple of errors creep in.
A double fault first, then a forehand wide, but she soon recovers with a forehand winner to bring up game point.
The Australian has Zvonareva running all over the place and eventually forces the mistake from the Russian as she whips the ball wide.
One game to go...
Barty breakspublished at 20:17 British Summer Time 31 August 2021
20:17 BST 31 August 2021
*Barty 6-1 4-3 Zvonareva
It's surely a matter of time now.
Barty hits a forehand on a sublime angle to get the break and she is now two games from victory after 57 minutes of play.
Break point Bartypublished at 20:16 British Summer Time 31 August 2021
20:16 BST 31 August 2021
Barty 6-1 3-3 Zvonareva*
Barty is the top seed here but there are some big names standing in the Wimbledon champion's way.
No fewer than seven Grand Slam winners advanced on Monday, including defending champion Naomi Osaka.
Vera Zvonareva has been putting up a decent challenge in this second set but Barty has break point now...
Postpublished at 20:13 British Summer Time 31 August 2021
20:13 BST 31 August 2021
Barty 6-1 3-3 Zvonareva*
There is an automatic line calling system at this year's US Open, line judges are a thing of the past.
There was a very brief moment when that appeared to be a terrible decision as the system malfunctioned but all is well again now thankfully.
Barty has made a dominant start to her campaign, taking the first set 6-1 against Vera Zvonareva.
The pair are currently on serve in the second set.
Postpublished at 20:10 British Summer Time 31 August 2021
20:10 BST 31 August 2021
Happily there's time for us to catch up with where world number one Ashleigh Barty is at so over to Arthur Ashe we go.
There has been a (very minor) bit of drama...
Postpublished at 20:08 British Summer Time 31 August 2021
20:08 BST 31 August 2021
So British qualifier Emma Raducanu will face China's Zhang Shuai in the second round in New York.
get involved Get Involvedpublished at 20:06 British Summer Time 31 August 2021
20:06 BST 31 August 2021
#bbctennis
Theo: Well played Emma Raducanu. Such a pro.
Postpublished at 20:06 British Summer Time 31 August 2021
20:06 BST 31 August 2021
Raducanu 6-2 6-3 Vogele
More from Emma Raducanu: "I am extremely pleased, I got broken early in both sets but got some clean returns out of the middle of the frame - sort of by luck, sort of by skill, but I'll take it and run with it!"
'I'm excited to see how far I can go' - Raducanupublished at 20:05 British Summer Time 31 August 2021
20:05 BST 31 August 2021
Raducanu said on Amazon Prime: "I think everyone could tell I was getting a bit shaky in the last game but I got there in the end and I was so relieved.
"The fans made me feel so welcome and so at home so I'm really appreciative.
"I've been playing on the hard courts in the States so I'm used to the heat and humidity.
"I feel really good physically so I'm just excited to see how far I can go."