Deuce has featured heavily in this match and the fourth set is no different.

Alexander Zverev just hits the ball gently over the net before a crushing forehand flies past Jesper De Jong who looks deflated as the German wins the first two games in the fourth set.

By no means is everything rosy for Jannik Sinner, who has at times looked frustrated with himself and has never looked particularly happy despite his commanding position.

An ace brings the world number one level at 30-30 as Richard Gasquet searches for an opening. Once again, though, the door is slammed shut in his face by the world number one.

More polite applause follows. One hour in, and Gasquet may only have one more left on this stage unless he can come up with something very special.

Arthur Fils is feeding off the energy from the crowd while Juame Munar is feeling the pressure.

A double fault from Munar combined with some big hitting from Fils earns two break points for the Frenchman.

But Munar responds well to take the game to deuce before securing the hold with a forehand winner.

Still digging in as best he can, Richard Gasquet forces his way to deuce as Jannik Sinner threatens another break.

The crowd are desperate for Gasquet to come through but Sinner is not being affected one bit by the atmosphere and context here.

The Frenchman misses the line and falls a double break behind. It's not shaping up to be quite the farewell everyone hoped.

Annabel Croft
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds

Arthur Fils is just conducting this crowd.

What an entertaininer. You couldn't ask for a better crowd.

Not a seat to be had.

What can Jaume Munar produce against a crowd that is so against him?

As he did early in the first set, Jannik Sinner is looking too sharp and too powerful for Richard Gasquet right now.

Gasquet is doing what he can and defends well to draw an error to reach 40-30, but that's as close as he's allowed to get.

It's a set and a break to the good for Sinner and you would certainly not bet against him seeing this out in straight sets from here.

Not the start Richard Gasquet, or the majority of the crowd, wanted.

From game point down, Jannik Sinner lands an early blow in set two and very quickly it's looking like a long, long way back for the Frenchman.

Wow, where has this come from?

Arthur Fils battles through the game, opening up break point and he takes it magnificently with a crashing forehand winner.

The French 14th seed might be carrying an injury but you wouldn't know it right now as he raises his finger in the air in celebration to acknowledge the thunderous applause.

The temperature is hovering around 25C in Paris today and the sun is beating down on Court Philippe Chatrier as we begin the second set.

Richard Gasquet is looking for a positive start but misses the line to bring Jannik Sinner to deuce.

Alexander Zverev breezes through his service game with a hold to love as he wins the third set.

His forehand is too powerful for Dutchman Jesper De Jong who hits into the net.

One more set to go if Zverev is to reach the third round.

Despite injury, Arthur Fils is giving everything he's got in this deciding set against Jaume Munar but finds himself a break down.

The frustration is showing for the French 14th seed and he receives a warning from the umpire for smashing a loose tennis ball.

The crowd are unfussed - they are continuing to urge Fils on with everything they have.

There have been 14 unforced errors in this third set for De Jong and they have proved costly as Alexander Zverev breaks again.

Zverev is in control as it stands and will serve for the third set.

Ah, so close but so far for Richard Gasquet.

Jannik Sinner survives three break points against his serve to hold and take the first set.

The Frenchman may just have two sets left in his 23-year career, but he's shown he's going to fight hard the whole way.

Jannik Sinner has Richard Gasquet sliding all over the shop before the Frenchman eventually misses as the second of those break points disappears.

But Gasquet will have a look at a third break point...

Richard Gasquet has his first break points!

Two for Jannik Sinner to save.

The French fans rally behind Richard Gasquet. Their man once again reaches 0-30 on the world number one's serve.

Annabel Croft
Former British number one on BBC Radio 5 Sports Extra 2 and BBC Sounds

Jannik Sinner takes everything in his stride.

He saunters around, nothing seems to phase him.

He's very, very calm as a player. You cannot read him psychologically.

Well played, Richard Gasquet. Once at risk of being blown away by Jannik Sinner's fast start, the Frenchman is holding firm and keeps himself within striking range before Sinner attempts to serve out the set.

Richard Gasquet ramps up the excitement levels inside Court Philippe Chatrier by edging 0-30 up on Jannik Sinner's serve, but the world number one wakes up and recovers impressively to shut out his opponent and move a game away from the first set.

That is the sort of half chance Gasquet absolutely must begin taking if he is to stand any chance here.

Alexander Zverev has two break points but is unable to convert either of them.

The umpire rules that his forehand down the line was just wide and the game goes to deuce.

De Jong hits into the net before his fierce backhand goes wide and Zverev eventually gets the break.