US Open quarter-finals at Flushing Meadows, New York: Get involved: #bbctennis
Serena Williams overpowers Wang Qiang 6-1 6-0 in 44 minutes to reach semi-finals
GB's Johanna Konta loses 6-4 6-4 to Ukrainian fifth seed Elina Svitolina in women's quarter-finals
Daniil Medvedev beats Stan Wawrinka 7-6 (8-6 ) 6-3 3-6 6-1 in men's last eight
Roger Federer v Grigor Dimitrov follows Williams v Wang
Jonathan Jurejko
BBC Sport at Flushing Meadows
Been here, done it, got the inscription on the Court of Champions outside Ashe. Six times.
Serena Williams has the experience. No woman left in the draw has ever won a Slam.
Image source, BBC SportWilliams 3-0 Wang*
This is proving a really tough pace for Wang Qiang.
Serena Williams races into a 40-0 lead, though Wang is somehow able to battle back to 40-30 before the American decides she's had enough and seals the deal on a third successive game.
The power, speed and accuracy is all there for Williams so far this evening and she's making light work of this contest.
*Williams 2-0 Wang
The perfect start for Serena Williams.
She looks in the mood, firing a cross-court forehand to level at 30-30 before finding herself at break point.
Looking to settle the nerves, Wang tries to recover a drop shot at the net but leaves the court wide open for Williams to pick her spot and take a 2-0 lead.
Image source, Getty Images#bbctennis or text 81111 (UK only)
Sulaimon Adelekan: Up, ready, charged and on the Website. It is huge chance for Serena Williams to get into the semis and a step from the finals, also to level up with Margaret Court. Who can forget last year's emotional final though we can't have a repeat?
Williams 1-0 Wang*
No hanging about from Serena Williams in her opening service game.
She concedes just the one point at 40-0 up and is comfortably up and running in this quarter final.
Image source, Getty Images*Williams 0-0 Wang
And we're off!
Williams v Wang
The players are just about finishing up their warm-ups as the crowds continue to filter into the stadium.
A first meeting between these two is just moments away!
#bbctennis or text 81111 (UK only)
A reminder that, as ever, you can get involved in this live text via Twitter or by text.
Let us know your thoughts using #bbctennis or, if you're in the UK, send a message to 81111.
Williams v Wang
Hoping to prevent Williams recording a 100th career victory at Flushing Meadows is Wang Qiang.
Contesting her first ever Grand Slam quarter-final, Wang defeated second seed Ash Barty in straight sets to reach this position.
Having won all four of her matches in straight sets, can she cause a big shock here?
We'll be under way shortly.
Williams v Wang
23-time Grand Slam champion Serena Williams overcame 22nd seed Petra Martic 6-3 6-4 in the fourth round - despite requiring medical attention after rolling her ankle.
The American, who has lost just one set in her four matches at Flushing Meadows so far, admitted the injury “affected me a little mentally” and will have her fingers crossed it doesn't become a problem again tonight against Chinese 18th seed Wang Qiang...
Williams v Wang (00:00 BST)
Welcome back to the US Open action!
Six-time champion Serena Williams is ready to battle China's Wang Qiang for a place in the semi-finals at Flushing Meadows, with the winner set to face Elina Svitolina in the final four following the Ukrainian's earlier victory against Johanna Konta.
Can Williams move one step closer to a record-equalling 24th Grand Slam title?
Let's find out.
Image source, Getty Images
Image source, Getty ImagesWe're going to end the text part of this page for a bit, but you can still listen to live BBC Radio 5 Live Sports Extra commentary of the men's quarter-final tie between 23rd seed Stan Wawrinka and fifth seed Daniil Medvedev by pressing the icon at the top.
We'll be back for some text commentary when the second session starts at 00:00 BST with six-time champion Serena Williams up against China's 18th seed Qiang Wang.
Svitolina 6-4 6-4 Konta
Jonathan Jurejko
BBC Sport at Flushing Meadows
Image source, EPABritish number one Johanna Konta missed out on the US Open semi-finals after she was worn down by Ukrainian fifth seed Elina Svitolina.
Konta, 28, was unable to impose herself in a 6-4 6-4 defeat on Arthur Ashe Stadium.
The 16th seed, aiming to complete the set of major semi-final appearances, was forced into errors by 24-year-old Svitolina's impressive retrieving.
Konta saved two match points before Svitolina served out for a gutsy win.
Svitolina, the highest seed left in the draw, will play American 23-time Grand Slam champion Serena Williams or China's Wang Qiang in the last four.
Former Wimbledon champion Pat Cash, a semi-finalist here in 1984, has just tweeted his verdict...
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#bbctennis or text 81111 (UK only)
Edward Emond: Konta has changed her coach every season for past four years, Zavialoff has done well to help her out of slump, best year across four slams. Continuity and stepwise growth needed, not constant knee-jerk change.
Svitolina 6-4 6-4 Konta
Elina Svitolina speaking after her win: "I think we were both striking the ball well, it was quite even, I'm just very happy with the way I handled the pressure today. There was disappointment of course when I was close but I was just taking one point at a time and tried to stay clam.
"For all the Ukrainians it is not so easy when you are growing up, you don't have much opportunity to travel and that's why we are so determined when we get them."
On boyfriend Gael Monfils' influence: "We are pushing each other and we are now trying to join each other in the semi-finals [he plays Italian Matteo Berrettini in his quarter-final tomorrow]- now it's time for him to step up his game!"
On facing Serena Williams or Wang Qiang in the semi-final: "It's going to be a good match tonight and it's a semi-final for me so I must enjoy it whoever I play. It would be exciting to play Serena one more time."
Svitolina 6-4 6-4 Konta
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Svitolina 6-4 6-4 Konta
Judy Murray
Tennis coach at Flushing Meadows on BBC Radio 5 live sports extra
That was a masterclass in consistency, court coverage, resilience.
Svitolina served well, she fought quietly. I don't think Jo played badly she just didn't have the consistence to break Svitolina down.
Svitolina was just that bit better overall.
Image source, Reuters
Svitolina 6-4 6-4 Konta
Elina Svitolina springs into the air, punches the air in delight and she has booked her spot in the US Open semi-finals for the first time.
But this is where the US Open ends for Johanna Konta. She has enjoyed her best run here, including a memorable win over world number three Karolina Pliskova in the last round, but the unforced errors proved costly today.
Image source, Getty ImagesA brilliant passing shot, match point on her own serve for Svitolina.