French Open quarter-finals - listen to live radio commentary at top of page (UK only)
LIVE: Top seed Aryna Sabalenka is taken to a deciding set by Diana Shnaider
Sabalenka led 6-3 4-1 and served for match before Shnaider fought back, taking second set 7-5
Winner will play qualifier Maja Chwalinska, who stunned Anna Kalinskaya 7-6 (7-3) 6-3 to continue dream run
Chwalinska is sixth woman in the Open era to reach a Grand Slam singles semi-final as a qualifier
Followed by: Felix Auger-Aliassime v Flavio Cobolli in men's quarter-finals
Italians Matteo Berrettini and Matteo Arnaldi go head-to-head in night session (not before 19:15 BST)
*Sabalenka 6-3 5-7 0-1 Shnaider
Another poor miss from Aryna Sabalenka, this time on game point, further adds to the top seed's frustration.
She unleashes an almighty roar after driving in an angled forehand winner to move back within touching distance of an escape.
*Sabalenka 6-3 5-7 0-1 Shnaider
Naomi Broady
Former British player on BBC Radio 5 Sports Extra and BBC Sounds
Aryna Sabalenka realises she needs to calm things down emotionally a little bit.
However, Sabalenka is furious again and she's looking at her coaching team to say; 'I don't know how to get myself out of this.'
These dark clouds seem to be edging towards us. I don't think Sabalenka would mind if the roof got shut.
*Sabalenka 6-3 5-7 0-1 Shnaider
Shottt! Diana Shnaider finds another winner to force a break point.
Aryna Sabalenka survives, but she'll have to face another after the Russian fires in her latest forehand winner cross-court...
*Sabalenka 6-3 5-7 0-1 Shnaider
Aryna Sabalenka needs to get off to a positive start here, for a psychological boost as much as anything.
The wind has whipped up again, and Shnaider meets a second serve early to bury a forehand into the corner for deuce.
*Sabalenka 6-3 5-7 0-1 Shnaider
Naomi Broady
Former British player on BBC Radio 5 Sports Extra and BBC Sounds
Image source, Getty ImagesThere is more and more conversation happening between Aryna Sabalenka and her coaching team. 24 unforced errors from her racket now.
*Sabalenka 6-3 5-7 0-1 Shnaider
Diana Shnaider has undoubtedly raised her level, but it does feel like Aryna Sabalenka lost that second set. The world number one completely lost her concentration at times.
Diana Shneider continues her recent scoreboard dominance by holding serve at the start of the third set.
Sabalenka 6-3 5-7 0-0 Shnaider*
Naomi Broady
Former British player on BBC Radio 5 Sports Extra and BBC Sounds
I can't believe Ayna Sabalenka has lost that set. A complete loss of focus. Diana Shnaider has raised her level and grown in confidence. An incredible turnaround.
Sabalenka 6-3 5-7 0-0 Shnaider*
Not an outcome anyone saw coming at 6-3 4-1.
Somehow, Diana Shnaider turns around the second set to take world number one Aryna Sabalenka to a decider.
*Sabalenka 6-3 5-6 Shnaider
Russell Fuller
BBC tennis correspondent on BBC Radio 5 Sports Extra
What a lob from Diana Shnaider. A moment of inspiration. This is getting very tight now.
*Sabalenka 6-3 5-6 Shnaider
Aryna Sabalenka has won just one of the past six games - and now she must halt her opponent's momentum to stay in the set.
This is a real test of the world number one's mettle now, as Shnaider gets to 30-30.
An error from Sabalenka! Set point!
*Sabalenka 6-3 5-6 Shnaider
Naomi Broady
Former British player on BBC Radio 5 Sports Extra and BBC Sounds
Where has this level been for the last hour and a half? Diana Shnaider is finally pulling it out and mixing it up.
What an impact confidence has on a match.
*Sabalenka 6-3 5-6 Shnaider
Diana Shnaider has fire in her belly now! That's another wonderful forehand down the line from the Russian as she takes charge on serve.
A second serve then catches out Aryna Sabalenka and, from 4-1 down, the 25th seed leads the set for the first time at 6-5. What a turnaround!
Sabalenka 6-3 5-5 Shnaider*
Huge winner from Diana Shnaider!
The Russian has been guilty of not taking her big opportunities in this match, but she seizes this one with a booming forehand into the corner.
Aryna Sabalenka was two points from the semi-finals, but suddenly we're back on serve in the second set.
*Sabalenka 6-3 5-4 Shnaider
Aryna Sabalenka looks up to the sky after volleying wide at the end of a point in which she appeared to have total control.
She then slaps a forehand into the net - and Diana Shnaider will have another break back point!
*Sabalenka 6-3 5-4 Shnaider
It certainly hasn't been completely straightforward for Aryna Sabalenka, and there have been plenty of frustrating moments over the past hour and a half.
So she will be very keen to get the job done at the earliest opportunity here.
Diana Shnaider misses the baseline to leave the top seed two points from victory.
*Sabalenka 6-3 5-4 Shnaider
Diana Shnaider wallops a serve down the centre as she moves clear on serve, and another accurate first serve wraps up a comfortable hold.
One final chance to break the Sabalenka serve coming up.
Sabalenka 6-3 5-3 Shnaider*
Image source, ReutersThe great escape.
Aryna Sablenka sees off four break points to move one game away from a place in the semi-finals.
That was a huge opportunity for Diana Shnaider, but was it her last?
*Sabalenka 6-3 4-3 Shnaider
Naomi Broady
Former British player on BBC Radio 5 Sports Extra and BBC Sounds
For the first time it is starting to feel like Diana Shnaider is getting a foothold in the match.
Aryna Sabalenka is a little bit uncomfortable in these longer exchanges and Shnaider has sharpened up to the pace which is coming at her.
*Sabalenka 6-3 4-3 Shnaider
Into the net from Aryna Sabalenka. A fourth break point for Diana Shnaider...
Saved with a huge first serve. Sabalenka then has a brief 'word' with her team before returning to serving duties. She's really not happy out there.
*Sabalenka 6-3 4-3 Shnaider
Image source, ReutersNo hiding from Aryna Sabalenka, who unleashes a barrage of powerful groundstrokes to eventually grind down Diana Shnaider.
The world number one's huge shout of 'Let's go' echoes around the arena as she recovers to deuce.
