Postpublished at 13:45 British Summer Time 4 June
*Andreeva 5-6 Boisson
Boisson's forehand return is wild and skews wide. Second set point saved.
It's nervy out there.

Novak Djokovic beats Alexander Zverev 4-6 6-3 6-2 6-4 to reach French Open semi-finals
Djokovic will face Jannik Sinner next, after world number one beat Alexander Bublik 6-1 7-5 6-0 to seal spot in semi-finals
World number 361 Lois Boisson upsets teenage sixth seed Mirra Andreeva 7-6 (8-6) 6-3 to reach women's semi-finals
French wildcard Boisson will face Coco Gauff in last four
Gauff defeated fellow American Madison Keys 6-7 (6-8) 6-4 6-1 to reach semi-finals
Emma Smith, Jess Anderson, Bobbie Jackson and Millie Sian
*Andreeva 5-6 Boisson
Boisson's forehand return is wild and skews wide. Second set point saved.
It's nervy out there.
*Andreeva 5-6 Boisson
Oh wow. A double fault from Andreeva at deuce. Boisson will have another go at set point.
*Andreeva 5-6 Boisson
Set point saved by Andreeva!
This chair umpire is surely tired of saying "Merci, merci" in an attempt to get the crowd to quieten down.
They continue to roar as we head to deuce.
*Andreeva 5-6 Boisson
Goodness me how has she missed that!
A simple put away for Andreeva at the net but she misses and all of a sudden Boisson has set point.
The crowd are going wild.
*Andreeva 5-6 Boisson
Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds
That is three electric forehands in a row from Lois Boisson!
She has been hitting them up the line in the last two games, and she is just two points away from winning the opening set.
Who could have believed this after the way Mirra Andreeva started?
*Andreeva 5-6 Boisson
Andreeva rallies to draw back level at 30-30 then nails the overhead smash for game point.
*Andreeva 5-6 Boisson
The crowd are becoming increasingly loud and therefore increasingly tricky for Andreeva to deal with.
Boisson has got them firmly on side and she rips a forehand across for a 0-30 lead. Two points away from taking the set.
*Andreeva 5-6 Boisson
Boisson takes the lead in the set!
Andreeva fires wide and this time it's the Russian who will serve to stay in the set.
It's hard to believe she had set point earlier...
Andreeva 5-5 Boisson*
Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds
Wow! Can you believe it? We are back on serve here.
Three forehand unforced errors from Mirra Andreeva. There was no footwork there whatsoever on those last three forehands. That is a sign of nerves.
It's hard to believe this turnaround, but all of a sudden the French woman is starting to flow...
Andreeva 5-5 Boisson*
It just proves the importance of hanging in and taking that hold earlier.
Boisson has clearly found a bit of momentum and belief here.
Andreeva 5-5 Boisson*
Boisson digs deep and takes the break when Andreeva dumps her forehand into the net.
What a moment! We're back on serve.
*Andreeva 5-4 Boisson
Well Boisson is not out of this by any stretch!
From looking fatigued on the baseline she's worked two break points.
*Andreeva 5-4 Boisson
It does! Boisson produces an ace then a powerful forehand to take the hold.
From saving set point to taking the hold, she's still in this.
Andreeva 5-3 Boisson*
Chants of "Lois! Lois!" from the crowd on Chatrier as she saves set point.
If that doesn't give her a boost...
Andreeva 5-3 Boisson*
Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds
I still think there is a long way to go in this one, but I'm noticing that Lois Boisson's body language is a little bit more negative today than in her previous matches.
It's almost like her expectation is that she should be doing better, rather than having that 'joie de vivre' a little bit more.
Maybe that's one of the reasons it has taken her so long to have this breakthrough.
Andreeva 5-3 Boisson*
Boisson offers Andreeva an opening with a wild backhand which drops wide and the 18-year-old pumps a forehand winner down the line for set point.
Andreeva 5-3 Boisson*
Is Boisson fatiguing a little? It's a slow walk back to the baseline after sprinting to the net to meet the drop shot.
Andreeva 5-3 Boisson*
Boisson serving to stay in set one.
She puffs out her cheeks as she fires her return into the net.
Andreeva 5-3 Boisson*
Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds
There has been such high quality from both women so far. Both players are showing such immense variety. Excellent tennis.
Lois Boisson's forehand has so much rotation and so much kick. It is just putting Mirra Andreeva off-balance and forcing her backwards.
Andreeva 5-3 Boisson*
What a shot.
A ripping backhand down the line prompts a huge roar from Andreeva as she takes the hold in a tricky game.