Maria Sharapova looks set to meet Garbine Muguruza in the last eight. The Spaniard has the upper hand on Pauline Parmentier on Court Suzanne Lenglen.

You can keep up with the outcome of that one on our live scores page.

Meanwhile we will be back tomorrow to bring you live coverage of Andy Murray's meeting with Fernando Verdasco. Third on Court Suzanne Lenglen, I'd set your day up around a 14:00 BST kick-off approximately.

Bye for now.

The whole ice maiden gig is starting to slip. The usually unreadable Maria Sharapova is brimful of emotion, celebrating loudly and defiantly as Sam Stosur drifts long on return when she has break point.

The Russian has her first match point and wastes it with her fifth double fault. After racing through the set, Sharapova looks like she is getting the jitters over the final couple of yards. A missed forehand give Stosur another break point. Saved. A big ace and then finally Sharapova works Stosur over with the forehand, eventually finding the angle the picks the lock and wins the match.

Relief, delight and sheer fatigue are all there as she shouts up to her box in celebration.

Sam Stosur's forehand was dictating terms in the match just an hour ago, now it is the runt of the litter.

The Australian looks up at an equally bemused coach Miles MacLagen as she shanks one off the frame in the the opening point. There is nothing that either of them can do about the assault the Sharapova then launches.

The Russian rifles away a return winner, produces a perfectly calibrated block lob and crunches away a final forehand winner. A third successive break. And a first chance to serve out the match.

Maria Sharapova has wrestled this match round and now has it pinned to the floor. A submission might not be far off.

She breaks Sam Stosur's serve again to move a double break ahead.

If you beat Serena Williams, you deserve to go deep in a tournament. Garbine Muguruza looks like she is getting her reward after toppling the top seed in the opening round.

The Spaniard is set fair for her first Grand Slam quarter-final after taking the first set against unseeded Frenchwoman Pauline Parmentier.

Image source, Getty Images

There is no change in her body language. Maria Sharapova is still stiffly stalking around the court between points with her head down, like a school kid trying to avoid the teachers' gaze. But there is a definite shift in the momentum of the match.

The Russian seventh seed breaks at the first time of asking and seems to be getting a few more revs, a little more pace on her forehand weapon.

Pick the bones out of this one then. Is Maria Sharapova's greater know-how at the business end of Grand Slams going to be decisive? Or can Sam Stosur overwhelm her with a mix of strength and exuberant groundstrokes?

We will have a deciding set to judge, because Maria Sharapova has held serve to seal the second.

Piers Newbery
BBC Sport at Roland Garros

"Team Sharapova are on their feet for the first time loudly urging on their charge - as a collective you wouldn't want to meet them in a dark alley. Sam Stosur continues to march purposefully about the court but the Russian has wrestled this one back from the brink."

She has been fighting a rearguard action for most of the set, but here comes the resurgence. Maria Sharapova comes out fighting like caged tiger, with some savage forehand hitting carrying her to 0-40 before Sam Sotsur obliges her with an error at the first time of asking.

Sharapova to serve for the set next.

Image source, Getty Images

At 30-30 Sam Stosur was sniffing a break, but the chance disappears in a puff as the Australian nets a return and is then caught out by a second serve that spits right up in her grill.

Sam Stosur, who dispatched Dominika Cibulkova in the previous round, is building up a head of steam. The forehand is probing with crafty angles and blistering power and Maria Sharapova's shoulders are starting to sag.

Stosur lost 6-4 6-3 to Sharapova in the third round of Madrid just a few weeks ago, this is beginning to look a lot like revenge.

Sam Stosur is the coming force in the contest. A sledgehammer serve out wide is followed by laser-like forehand down the line as she holds to 30.

The Australian has plenty of gas in the tank and grit upstairs. Sharapova, the 2012 champion, looks like she is trying to work out if she has the stomach for this fight.

Piers Newbery
BBC Sport at Roland Garros

"It's not often a player puts more clothes on during a match but as the evening draws in, Maria Sharapova has added another layer. Throw in a time violation and another double fault on break point, as it's no wonder the Russian is throwing more than a few dark glances at her team in the stands."

Maria Sharapova sneaks a peek up at coach Sven Groeneveld and there is a look of a concern in his eyes. She has been pinged for a time violation, is coming under fire from a barrage of Sam Stosur's high-kicking forehands and has handed back the break.

Image source, Reuters

Maria Sharapova puts the memory of the first set thorough her mental shredder and comes out fighting at the start of the second.

Harassing and hurrying Sam Stosur through her groundstrokes, she is rewarded when the Australian swats long with a final volley to give away the break.

Image source, AP

Novak Djokovic: "With the support Jo Wilfried Tsonga has on home soil, I needed to start with a high intensity, good movements and try to get as close to baseline as possible," he said.

"I prepared well with my team and executed very well. For each player there are certain types of patterns and tactics you prepare.

"The scoreline was perfect for me and I'm very happy with that performance."

Maria Sharapova's famed iron will is not enough to crowbar her back into the first set. Sam Stosur steals another service game against the head to close out the opener.

We have already lost six of the top ten women's seeds. Another is teetering here.

Piers Newbery
BBC Sport at Roland Garros

"Sitting 10 metres from Maria Sharapova, the intensity is faintly terrifying as she fights off three break points but dumps a forehand in the net on the fourth. Five minutes later she is throwing everything into getting it back but Stosur holds on for 5-3. Great stuff from the Aussie, blood and thunder on Lenglen."

A rout. A beasting. A car wreck.

Novak Djokovic was excellent, all elastic limbs and pin-point accuracy. Jo-Wilfried Tsonga was average, always on the back foot, only occasionally getting his forehand firing.

It all added up to a landslide and a statement of intent to the rest of the men's draw.

Image source, Getty Images

Sam Stosur has the advantage over on Suzanne Lenglen. It is looking a lot more competitive than over on Chatrier.