This is the 17th time Samantha Stosur and Maria Sharapova have met on a tennis court and we are braced to see which of the big-hitters will come out on top this time around. Stosur's coach David Taylor, who she started working with again last month to boost her game, looks pretty relaxed in the players' box. That match starting soon.
After losing the opening set, #Muguruza powers thru to clinch the 2nd 6-2. We head to a 3rd on Court 2! #RG15 http://t.co/eAGlYPU9c7
Change of ends
It's time for a change of ends here at Blog HQ. Thanks to Matt for his stint - and excellent use of icons. He's off to see what Bam Bam can do against Masha. Now that sounds like some sort of awesome mash-up.
Roger stands one game away from the fourth round, after Damir plays a limp drop shot into the next. Will he close it out with a break, or will the Bosnian keep the contest alive with a service hold? Stay tuned ...
First time meeting for #Wawrinka and #Johnson. Stan bidding to reach R16 for 5th time, Steve for the 1st. #RG15 http://t.co/hFl1pK6IkG
News just in ...
Our 2015 trophy presenters have been revealed! Gustavo "Guga" Kuerten will present the Coupe des Mousquetaires to the men's singles champion, while Martina Navratilova will present the Coupe Suzanne Lenglen to the women's winner.
He received a walkover thorugh to the 4th round, but Kei still obliged the Japanese press on a day off.Nishikori y el boom del tenis japonés pic.twitter.com/msYMl22Jqn— Enrique Quique Cano (@QuiqueCano) May 29, 2015
Stan Wawrinka  v Steve Johnson. The American Johnson is having a great tournament, having reached the 3rd round here for the first time. If he beats Wawrinka he's advance to the second week at a major for the first time. Lots at stake.
On player multi-lingualism: "I do speak Greek. Not as fluently as my parents would like, but I'm not bad. I understand everything. I can string together most sentences, but some I struggle. I have to throw an English word in there. But, yeah, both my parents were born in Greece. My dad moved over to Australia when he was five and them went back on holiday, and that's when he met my mum, when she was like 23, and brought her over. I was born in Adelaide."
The German and the Spaniard have started their match on Court 2, and Kerber has wasted little time, breaking early to surge to a 2-0 lead. The 11th seed has been in fine claycourt form so far in 2015, winning WTA titles in Charleston and Stuttgart.
The other fourth-rounder is Ivanovic v Makarova. Huge opportunity for all four women to make SF.Congrats to Elina Svitolina and Alize Cornet. Each earned career-best Roland Garros results with their wins today. Will meet in R16.— TennisNow (@Tennis_Now) May 29, 2015
... Sharapova v Stosur is third up on Chatrier. It's the blockbuster match up of the day!Many big match-ups still to come in the draw. Which ones are you eagerly anticipating? http://t.co/tSm13TnL6s #RG15 pic.twitter.com/uEhGPZcVNj— Roland Garros (@rolandgarros) May 29, 2015
Victoire! The Czech beats the German. And Safarova will next face the winner of the match between No.2 Sharapova and No.26 Stosur. Another solid result for Lucie - her surge at this stage of her career is inspiring.
Ekaterina #Makarova (n°9) est en 1/8e après sa victoire sur Elena #Vesnina 6-2 6-4. Elle affrontera Ivanovic #RG15 http://t.co/7SwPKBMCI1
Makarova def. Vesnina 6-2 6-4
In an all-Russian battle between doubles partners, Makarova overcomes Vesnina in straights. The No.9 seed is proving solid at the majors lately - she has now reached the second week at Wimbledon 2014 (QF), US Open 2014 (SF), Australian Open 2015 (SF) and now at RG. Respect.
They needn't worry - Federer is pummelling his forehand crosscourt, and plays one in behind Damir, who coughs up the error and surrenders serve. We have our first break on Chatrier, and it goes the way of the No.2 seed.
Now on #Chatrier: @rogerfederer vs. #Dzumhur, w/ the 2009 champ bidding for his 11th straight R16 appearance. #RG15 http://t.co/npAU4lAFfR
Lisicki 4-6 4-2* Safarova
An interesting development over on Court 1, with Lisicki surging into the lead in the second set. Might be slightly odd to see Lisicki flourishing away from her beloved Wimbledon, and indeed, should she win today, it would be her first ever trip to the second week at RG.
So what do we know about Damir Dzumhur? RG Radio commentators tell us his surname is pronounced "joom-hur" ... and this is his first ever trip to the Roland-Garros third round. He's the first Bosnian to ever feature at a Grand Slam, and he faces Federer, his idol: "I watched him playing semis I think Wimbledon with Roddick. That was the first time I was cheering for him. Since then he's my idol. So I remember him since I was ten or eleven, and now I have this opportunity to play against him."
Matt Trollope here, taking over for a bit while the esteemed Sarah Holt takes a much-deserved baguette break. Will attempt to follow in her footsteps and bring you all the latest from Roland-Garros as it happens!
Allez Alize! She's done it. The French 29th seed really has to hang tough to beat Mirjana Lucic-Baroni, who had knocked out third seed Simona Halep, but she does it in three sets. Alize falls to the Roland-Garros clay and lets a few tears fall too. She's taken part in the French Open 11 times but this is the first time she's made it through to the fourth round.
Mirjana Lucic-Baroni misses a forehand to hand Alize Cornet a crucial break at 5-4 in their sizzling encounter on Philippe-Chatrier. The Croatian had chances to break Cornet but she couldn't take them. Is this the decisive twist in the match? Cornet serving for it.
Awaiting the winner of the duelling players on Philippe-Chatrier is 19th seed Elina Svitolina. She needed three sets to get past German Annika Beck but this has been a very positive run at #RG15 for the 20-year-old Ukrainian.
It's a quick day's work for Russian Teymuraz Gabashvili, who races into a fourth-round meeting with Kei Nishikori thanks to a win over Lukas Rosol. Just a reminder that Nishikori went straight through because his opponent Benjamin Becker is troubled by a shoulder injury.
Victoire 7-6 7-6 pour les frères Bryan contre les jeunes Kokkinakis et Pouille #RG15 http://t.co/xbA6PzgLmF
Gasquet def. Berlocq 3-6 6-3 6-1 4-6 6-1
It's a stylish finish for Richard Gasquet as he wraps up his light-suspended match against Carlos Berlocq. The flashy Frenchman dinks a backhand volley at match point. It's back home for Gasquet who will return tomorrow against Kevin Anderson.
World No.1 (and two-time RG dubs champs) @Bryanbros/@Bryanbrothers d. Kokkinakis/Pouille 7-6(4) 7-6(3). #RG15 http://t.co/QtE3UWu1vr
Bryan/Bryan def. Kokkinakis/Pouille
Chest-bump alert! Top seeds Bob and Mike Bryan celebrate in traditional style as they edge two tie-breaks to see off the challenge of Thanasi Kokkinakis and Lucas Pouille in the second round of the men's doubles.
.@GarbiMuguruza looking sharp as she zones in to prepare for her R3 clash v Kerber. #InsideRG #RG15 http://t.co/CyclGDqY3a
Can you remember what you were doing 16 years ago? Nope, me neither. But we can tell you that Mirjana Lucic-Baroni, facing Alize Cornet on Philippe-Chatrier as we type, was playing a Wimbledon semi-final against Steffi Graff. You can check the video online if you'd like to see that match-up. Lindsay Davenport, who went on to win Wimbledon in 1999, has also been spotted here at #RG15. The American was carrying a racquet bag but she was probably playing for fun before a day in the TV commentary booth.
Hi. Just to let you know that French 20th seed Richard Gasquet and Carlos Berlocq are resuming their second-round match locked at two-sets all. Gasquet is serving first. Will he take the French crowd on another rollercoaster ride? We await.
Germany's Annika Beck fights back to take 2nd set off No.19 seed Elina Svitolina 6-2. To a 3rd we go! #RG15 http://t.co/FrvlbR2EGb
Rosol *4-6 4-6 0-0 Gabashvili
No signs of a bromance brewing on Court 2 where Teymuraz Gabashvili now has a two-set lead over Czech Lukas Rosol. The Russian simply loves the clay and has been tuning up for his #RG15 run by winning a Challenger title on the red stuff in Samarkand and the quarter-finals in Houston.
Ana Ivanovic is the first player through to the fourth round of #RG15. The 2008 champion takes just 52 minutes to sweep past teenager Donna Vekic. German football Bastian Schweinsteiger - who happens to be Ivanovic's boyfriend and pal of Boris Becker - is on his feet in the players' box. Ivanovic and Vekic have a sporting hug at the net. It may not be a win but it's still a landmark for the Croatian 18-year-old to reach the third round of a Grand Slam for the first time.
Lucic-Baroni and Ivanovic both race to a quick 4-0 start in their respective matches, Svitolina leads Beck 3-0. #RG15
Ivanovic *4-0 Vekic
The fist pumps are out on Court 1 from Ana Ivanovic because she has also raced to a double break against Donna Vekic. The Croatian teenager has already achieved her best Grand Slam result by reaching the third round her but will want to go further. The 2008 champion stands in her way on Suzanne-Lenglen.
Could this meeting with Mirjana Lucic-Baroni - conquerer of third seed Simon Halep in the last round - be a danger match for French 29th seed Alize Cornet? The Croatian, on the comeback trail at the age of 33, has the double break in the opening set.
Can the young duo of Kokkinakis/Pouille give the World No.1 Bryan Brothers a run for their money today? Tune in to find out! #RG15
Lots of good stuff coming up on Suzanne-Lenglen
Ana Ivanovic (Srb)  v Donna Vekic (Cro) followed by Richard Gasquet (Fra)  v Carlos Berlcocq (Arg) Nicolas Mahut (Fra) v Gilles Simon (Fra)  Gael Monfils (Fra)  v Pablo Cuevas (Uru)  Carlos Suarez Navarro (Esp)  v Flavia Pennetta (Ita) [28
The players are out on court and knocking up those fuzzy yellow balls so it's time we made an introduction of our own across this virtual net. I'm Sarah Holt, your blog guide for the next few hours, and you can say hello @sholtscribbles or @rolandgarros.
And we're underway w/Day 6 at #RG15! Who are you most excited to see on this gorgeous Friday?: http://t.co/QWJ6O6LrYa http://t.co/btjZZ6nD1C
Coming up on Court 1
Bob Bryan (USA)  v Thanasis Kokkinakis (Aus) Mike Bryan (USA)  Lucas Pouille (Fra) followed by Lucie Safarova (Cze)  v Sabine Lisicki (Ger)  Stan Wawrinka (Sui)  v Steve Johnson (USA) Benoit Paire (Fra) v Tomas Berdych (Cze) 
#RG2015 4 français-es participeront à l'épreuve de #tennisenfauteuil dont @HoudetStephane @MJEREMIASZ @Nicolas_Peifer http://t.co/c1NOg9UctA
One to Watch
A lot of people are excited about that third match on Philippe-Chatrier, when Sam Stosur takes on defending champion Maria Sharapova. Bam Bam Sam has been in good form on the Roland-Garros clay while the Russian second seed is getting in her groove after a cold. Sharapova leads the head-to-heads 14-2.
Alize Cornet (Fra)  v Mirjana Lucic-Baroni (Cro) followed by Damir Dzumhur (BIH) v Roger Federer (Sui)  Samantha Stosur (Aus)  v Maria Sharapova (Rus)  Jo-Wilfried Tsonga (Fra)  v Pablo Andujar (Esp)
Gasquet *3-6 6-3 6-1 4-6 0-0 Berlocq - match suspended
It's another one of those late-night five-setters folks! Richard Gasquet and Carlos Berlocq will resume rivalries on Friday with it all to play for in their second-round match. Gasquet looped the ball long to hand Berlocq a service hold, and the set, on the final ball of play on day five at #RG15.
Friday's Order of Play on Court Philippe-Chatrier:
Alize Cornet (Fra)  v Mirjana Lucic-Baroni (Cro)
Damir Dzumhur (BIH) v Roger Federer (Sui) 
Samantha Stosur (Aus) v Maria Sharapova (Rus) 
Jo-Wilfried Tsonga (Fra)  v Pablo Andujar (Esp)
There's drama on Suzanne-Lenglen, which shouldn't come as a surprise to those following that court this week. Richard Gasquet and Carlos Berlocq are locked in a duel which is getting the crowd very animated - and we can hear how excited at Blog HQ. With the light fading, Berlocq seems quite keen to pause the match but we continue for now.
There's another comeback win on Court 6 as Kevin Anderson comes through against Chinese Taipei's Yen-Hsun Yu. For those following the South African's form at Roland-Garros, he has reached the fourth round for the last two years running.
Court 1 is bouncing with Belgian fans right now and here's why. Alison van Utyvanck has just beaten 32nd seed Zarina Diyas. The Kazakh player had got off to a lightning start, winning the first set without dropping a single game in just 24 minutes. But Van Utyvanck showed brilliant resilience to get herself back into this match and win a place in the third round. And seriously there were loads of Belgian fans there to see her do it. Ole!
There are three matches remaining as the sun slowly begins to set on day five of #RG15. On Suzanne-Lenglen, Richard Gasquet is two-sets-to-one up against Carlos Berlocq and about to serve up the fourth. Over on Court 1, Kazakh's Zarina Diyas and Alison van Uytvanck of Belgium are all-square and into the third set. Just around the corner, South Africa's Kevin Anderson leads Chinese Taipei's Yen-Hsun Lu, the world No.64.
American Jack Sock reaches the French Open third round for the second year running after hanging tough to beat Spain's Pablo Carreno Busta in four sets. There are emotional celebrations from Sock, who promptly chucks his towels into the crowd - who don't seem to mind.