Sharapova beats Babos 6-7 (4-7) 6-4 6-1
Norrie (GB) v Carreno Busta (Spa)
Edmund (GB) taking on Johnson (US) (00:30 approx)
GB's Bedene beaten 6-1 6-4 6-4 by Rublev
Injured Kyrgios knocked out by Millman
Svitolina, Kuznetsova, Dimitrov, Thiem, Del Potro, Berdych & Monfils all through
Riske 6-2 3-6 4-6 Vandeweghe
CoCo Vandeweghe is through to second round at Flushing Meadows after a battling victory over fellow American Alison Riske.
Vandeweghe sent down nine aces as she attempted to overcome 45 unenforced errors in a shaky start to her tournament.
However, she broke at the right moment in the third set to take the match, and set up a meeting with Tunisia's Ons Jabeur.
Image source, AFPBabos 7-6 (7-4) Sharapova
Timea Babos seals the set with a grimace and a gripped fist towards her camp in the players' box.
If she converts this set lead into victory it won't be her biggest win by ranking - that is world number 11 Dominika Cibulkova at the moment - but it certainly will be by name.
Image source, Getty Images*Babos 6-6 (5-4) Sharapova
Timea Babos knocks away a forehand to move 5-2 up.
Maria Sharapova survives on her uppers over her next two service points, looking on in relief as Babos over-cooks down the line after running down a drop-shot.
Image source, Rex Features
Jeff Tarango
Former professional tennis player on 5 live sports extra at Flushing Meadows
Sharapova is 18-0 at night on this court and they've put her on the day today.
*Babos 6-6 (4-2) Sharapova
Maria Sharapova tightens up horribly as a double fault gives Timea Babos 4-1 and a double mini-break.
But Babos is also yippy. She misses with her first serve and her second is punished. The Hungarian is a mini-break up at the sit-down.
Image source, Rex FeaturesBabos 6-6 (2-1) *Sharapova
Errors, errors, errors.
Both players look twitchy as Sharapova sprays wide to give away a mini break and then Babos double-faults it straight back to her.
Babos 6-6 *Sharapova
Timea Babos swats a ball away in irritation.
Maria Sharapova knuckles down and knocks her back to force the tie-break.
Image source, Getty ImagesKuznetsova 4-6 6-4 7-6 (7-2) Vondrousova
It's not been easy, but Svetlana Kuznetsova is through to the second round.
Her Czech opponent pushed her all the way, and at one point she had three match points, but Kuznetsova prevailed to force a tie-break, which she fired her way through.
Vondrousova was battling with cramp as the tie-break progressed and it was the 2004 victor who went on to win.
And, as tennis writer Hannah Wilks points out, she had the greatest response, external to a post-match question about her opponent's cramp: "'I felt sorry she was cramping but I thought, she's 18 and I'm 32, so ...'"
Image source, Getty ImagesJeff Tarango
Former professional tennis player on 5 live sports extra at Flushing Meadows
Babos doesn't want to be second fiddle to Sharapova. We know what all the ladies in the locker room think about her. She has got a price on her head, Maria, and she knows it.
Image source, Getty Images*Babos 6-5 Sharapova
Maria Sharapova's service action is on the wonk.
After an aborted second-serve ball-toss, she pats long to offer up a break point.
The nerves are getting to here.
A forehand long and once again Timea Babos will serve for the opening set.
Babos 5-5 *Sharapova
Timea Babos leans in and pumps a backhand down the line and in for 15-30.
But Maria Sharapova is a grinder and grafter. Percentage tennis whittles out the next two points.
Not so fast.
Timea Babos runs down a drop-shot and flips a forehand into the beckoning acres behind her.
Deuce.
Image source, Getty ImagesAllow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
Image source, EPAIt's a strong look for sure...
Jeff Tarango
Former professional tennis player on 5 live sports extra at Flushing Meadows
After that great match against Halep, it's interesting how this crowd has come together for Sharapova. You could hear them cheering for her there. She needs to win this in straight sets if she wants to win the tournament.
Babos 5-5 *Sharapova
Thirty-thirty, a nerve-testing scoreline and Timea Babos falters as he prods a tentative forehand into the net from out wide and on the run.
Break point to Sharapova.
Relentless pressure, repeated grunting and finally Babos breaks down and cuffs long.
We are back on serve.
*Babos 5-4 Sharapova
Maria Sharapova keeps her cards on the table as she lures Timea Babos long.
The Hungarian has a changeover sit-down to contemplate the task.
Will that give her an attack of the vertigo?
Image source, Getty Images
Simon Briggs
Daily Telegraph tennis correspondent on BBC Radio 5 live sports extra at Flushing Meadows
We were talking before about the emotional toll of Monday night's match on Sharapova but of course it was a long match too - two hours and 44 minutes. If this goes to three sets, will she have anything in her legs?
Babos 5-3 *Sharapova
Timea Babos muscles a lovely double-handed backhand away for 15-0.
A strong confident stroke as we get to the pointy end of the first set.
The umpire overrules his line judge to call Maria Sharapova's forehand long and gets it right by a couple of milimetres.
That is why he gets the big chair I guess.
Babos takes advantage and holds.
Image source, Getty Images*Babos 4-3 Sharapova
Nicely done by Maria Sharapova who splatters a drive volley away to hold to 15.
Image source, Getty Images
Piers Newbery
BBC Sport at Flushing Meadows
"I'm not dedicated to the game at all. I keep letting people down."
Nick Kyrgios has come in for plenty of criticism in his time but has delivered a brutal self-assessment after losing to John Millman on four sets.
The disappointment of yet another injury problem, this time the shoulder, left the 22-year-old raw with emotion.
"There are players out there that are more dedicated, that want to get better, that strive to get better every day, the one-percenters. I'm not that guy."
Image source, Getty ImagesBabos 4-2 *Sharapova
Timea Babos still in command out on Arthur Ashe as she backs up her break with a hold.
Image source, Reuters