Day three at French Open - listen to live BBC radio commentary (UK only)
British number one Cameron Norrie retires injured when trailing Adolfo Daniel Vallejo 7-6 (9-7) 2-0 in first round
Defending champion Coco Gauff beats Taylor Townsend 6-4 6-0 to reach second round
World number one Aryna Sabalenka beats Jessica Bouzas Maneiro 6-4 6-2 as she hunts first Paris title
French wildcard Moise Kouame, 17, becomes youngest man in 17 years to win a Grand Slam singles match with victory over Marin Cilic
Sixth seed Daniil Medvedev becomes highest seed to fall so far with five-set loss to wildcard Adam Walton
GB's Jacob Fearnley and world number one Jannik Sinner in action later
BBC Radio 5 Sports Extra
Coverage from Roland Garros continues on BBC Radio 5 Sports Extra and via the link at the top of this page.
There's currently commentary of the match involving France's Lois Boisson, a surprise semi-finalist last year.
Jacob Fearnley's match will be live in a little while when that gets under way.
Jacob Fearnley is the sole remaining Briton in the men's singles - he plays his first-round match against Juan Manuel Cerundolo later this afternoon. That one should probably be getting under way within the next hour or so.
In the night session from 19:15 BST, world number one Jannik Sinner starts his quest for a career Grand Slam against French wildcard Clement Tabur.
Image source, Getty ImagesSiegemund 3-6 6-7 (3-7) Osaka
More from Naomi Osaka, on the heat helping her aggressive game: "Normally I would think so but she [Siegemund] was drop-shotting me and I was trying to run forward and it was a little bit slippery, but we both have to play in the same conditions so it's whoever wins, wins on that day."
Siegemund 3-6 6-7 (3-7) Osaka
Daniel Kiernan
Former British tennis player on BBC Radio 5 Sports Extra
A banana skin of a first-round draw there for Naomi Osaka, without any question, she will be a very happy camper as she walks off this court knowing she got through that - and in straight sets.
She wouldn't have wanted that third set, that battle, in this heat against someone who we know battles so well.
On a bigger picture, Osaka is so good for tennis. She is a superstar. Everything about her is superstar status and it's great for the tournament that she's moving on.
Siegemund 3-6 6-7 (3-7) Osaka
Naomi Osaka, speaking after her straight-set win over Laura Siegemund: "Honestly I felt really nervous but for me, I haven't played on this court in a little minute so it's nice to get out here and play in front of everyone. It's really hot so I hope everyone is drinking water."
On whether she feels she is improving on clay: "I hope so. I think I'm considered a veteran at this point. I hope I can play many more matches this tournament, but overall I just want to have fun and smile a lot."
On the inspiration for her outfit: "Honestly it's very couture. Funny enough, you know the Eiffel Tower at night when its sparkly? I think I look like that a little bit."
On how she will spend her day off: "Just the same old, you know the routine. Practice, get some treatment. I call my daughter and then I'll lay down and wait for the match."
Siegemund 3-6 6-7 (3-7) Osaka
Image source, Getty ImagesNaomi Osaka shakes a clenched fist towards her team before embracing Laura Siegemund at the net and waving to the crowd.
She didn't make that easy for herself, but she wins in straight sets and seals her spot in the second round.
Donna Vekic of Croatia will be her next opponent.
Siegemund 3-6 6-6 (3-6) Osaka*
Laura Siegemund is sent one way, then the other and she can't quite keep up with Naomi Osaka this time.
Three match points.
Siegemund 3-6 6-6 (3-3) Osaka*
Naomi Osaka is, for the most part, in control at the baseline, but Laura Siegemund's defence has been excellent and she keeps herself alive until Osaka misses. 3-3.
Gauff 6-4 6-0 Townsend
Image source, Getty ImagesCoco Gauff flashes a backhand crosscourt winner to book her place in the second round. She has taken just 24 minutes to win the second set.
Victory has been wrapped up in an hour and 21 minutes.
*Siegemund 3-6 6-6 (1-2) Osaka
Naomi Osaka comes out on top of a lengthy rally, finishing it with an overhead smash before double-faulting to allow Laura Siegemund back in.
Siegemund 3-6 6-6 (0-1) Osaka*
Daniel Kiernan
Former British tennis player on BBC Radio 5 Sports Extra
Look at Osaka's service game - she's held in about 25 seconds.
Her ability to strike a tennis ball is probably second to none on the WTA tour and we saw that with the results she had in the early stages of her career. But there is a reason why she's not at the top.
The game has moved on slightly and you could argue she needs more variation as she's a bit one-dimensional.
Image source, Getty ImagesGauff 6-4 5-0 Townsend*
Having caused Coco Gauff plenty of problems in the first set, Taylor Townsend is now being brushed aside by her fellow American.
Gauff holds, and left-hander Townsend is now serving to stay in the match.
Image source, Getty ImagesSiegemund 3-6 6-6 (0-0) Osaka
What pressure?! Naomi Osaka speeds through a love hold, wrapping it up with an ace to take us to a tie-break.
Siegemund 3-6 6-5 Osaka*
Naomi Osaka will be kicking herself. Three break points come and go in a game that lasted over 13 minutes. All of them were winnable but Laura Siegemund somehow stays in the rallies and Osaka is the first to crack.
The pressure is back on the former world number one to stay in the set and force a tie-break.
Image source, Getty Images*Gauff 6-4 4-0 Townsend
It's one-way traffic at the moment as Coco Gauff goes 0-40 up on Taylor Townsend's serve.
Townsend manages to save two of the break points but then goes long to hand over another break.
Gauff is firmly on course for round two.
Gauff 6-4 3-0 Townsend*
Coco Gauff races to a 3-0 lead in the second set.
She has dropped just one point on serve in her first two service games of this set. Taylor Townsend needs to start making some inroads into it if she is to avoid a straight-set defeat.
*Gauff 6-4 2-0 Townsend
Coco Gauff wins her opening service game of the second set to love and then comes up with a couple of brilliant passing shots on Taylor Townsend's serve.
Townsend then shovels the ball wide on an approach shot to allow Gauff a break point.
And a double fault from Townsend means the defending champion is a set and a break up.
Image source, Getty Images*Siegemund 3-6 5-5 Osaka
Daniel Kiernan
Former British tennis player on BBC Radio 5 Sports Extra
I think nerves have hit Siegemund at the wrong time but the match-up of this is fascinating because I think Osaka likes that flat, fast ball that plays into her strengths where Siegemund will give you everything but that.
It will be interesting how this unfolds now.
Siegemund 3-6 5-4 Osaka*
Laura Siegemund had set point but she wastes it with an audacious drop shot attempt that fails to clear the net.
That's all the encouragement Naomi Osaka needs to win the next two points and break back.
*Gauff 6-4 0-0 Townsend
Having wasted a set point on her own serve, Coco Gauff finally clinches the first set with her second opportunity on Taylor Townsend's serve.
The fourth seed pumps her fist towards her box - the defending champion has her first set on the board but it took almost an hour of hard toil.
Image source, Getty Images
