The first point of this match sees an extended rally, ending in Zverev winning with an overhead volley.

Settle in folks, this could be a late one.

Image source, Getty Images

"Ready? Play," says Swedish umpire Louise Engzell.

Here we go.

Jonathan Jurejko
BBC Sport senior tennis reporter at Roland Garros

These two fellas are well accustomed to the business end of Grand Slam tennis - and playing each other when it matters the most.

This is the second consecutive major where they have met, of course, with Zverev going through to the Australian Open final when Djokovic retired injured after losing the first set.

Djokovic has reached the Roland Garros quarter-finals or better every year since 2010, while Zverev is aiming to become the only man to reach the last four in each of the past four years.

Novak Djokovic has won the toss and will serve first.

Here come the players on to court now.

No niceties or casual chat between the pair as they were waiting before making their entrances. Game faces only.

Alexander Zverev has dropped only one set on his way to the last eight of the French Open.

The German has previously got to three Grand Slam finals, including at Roland Garros last year, but he is yet to lift one of the sport's biggest prizes.

In the last round, Novak Djokovic ended Cameron Norrie's encouraging French Open run with a straight-set victory over the Briton.

Djokovic beat Norrie, who was playing in the last 16 at Roland Garros for the first time, 6-2 6-3 6-2.

World number 81 Norrie never seriously looked like causing an upset against the 38-year-old great.

Tonight could be a different matter entirely for Djokovic.

Four matches, four straight-set wins for Novak Djokovic at this year's French Open - including a victory over Great Britain's Cameron Norrie in the fourth round.

We'd love to hear your thoughts on everything Roland Garros-related today.

Who are you backing to win the men's singles? There are five strong options remaining - Sinner, Musetti, Alcaraz, and the winner of this match.

Let us know who, and why, using the details above.

Welcome to our evening coverage of the French Open, and boy do we have a cracker for you in the men's quarter-finals.

Can Novak Djokovic take a step towards a possible 25th Grand Slam title? Or can Alexander Zverev edge closer to breaking his duck?

Let's find out.

Image source, Getty Images

That match between Alexander Zverev and Novak Djokovic is scheduled to get under way at 19.15 BST. We'll pause this live now, and return in a little under two hours' time.

See you then.

Speaking about his ability to hit winners and record minimal unforced errors, Jannik Sinner said: "We work a lot on me having good balance with my body. When you play against top players, you have to be very consistent. If you make a lot of mistakes it's already a game where, if we both serve very well, there are not so many rallies. That's why I try to get rhythm with the rallies.

"I never really change the tension of my racquet because I feel like I have a good feel of it, so I never want to mess around with that too much. There are players that will always change it, so that shows everyone is different.

"I'm very happy with how I've arrived in the semi-finals [this year]. The semi-finals in Grand Slams are very special, I'm looking forward to it."

On whether he will watch the last quarter-final tonight: "We will watch a little bit of it for sure. As always, I will also try to switch my brain off because Grand Slams are always mentally tough.

"Two weeks for an event is very long, so I will probably just try to go for dinner, relax and recover. It's going to be a great semi-final match, so hopefully I will be ready. We all hope for a high-quality match."

So what's to come tonight at Roland Garros? Oh, not much - just a match between two of the sport's biggest names.

Third seed Alexander Zverev faces 24-time Grand Slam winner Novak Djokovic. The winner plays Jannik Sinner in the last four.

Mouthwatering.

World number one Jannik Sinner speaking on Court Philippe-Chatrier after sealing his semi-final spot: "We have played each other a couple of times already, so we already knew what to expect a little bit. But, in other aspects, you never know how he [Alexander Bublik] is going to play.

"I feel like he deserved to be in this quarter-final, he has played some very tough players. I just tried to focus on my side of the court. I was trying to play as solid as possible because he can have some slight ups and downs, so I just needed to stay consistent throughout the whole match.

"I wanted to serve well in the important moments, which I did, so it was a good performance from my side. It's also a bit windy and breezy so things can become a bit more complicated. I warmed up with the roof closed because it was raining but then the some came out, so lots of challenges today.

"I'm very happy with the result. As always, thank you so much for the support and for staying. It is a great atmosphere."

Image source, Getty Images

This is Jannik Sinner's sixth career Grand Slam semi-final, matching his best ever showing at Roland Garros which he achieved last year.

Alexander Bublik made 37 unforced errors in that match. He was pulled all over the court by Jannik Sinner and by the end looked completely out of energy.

That's Grand Slam quarter-finals for you.

Jannik Sinner is now speaking on court, we'll bring you what he has to say shortly.

In the semi-final he will face either Alexander Zverev or Novak Djokovic. Whoever he plays, that will be a blockbuster.

At the change of ends, Alexander Bublik smiled and shook his head. He knows his fine run at Roland Garros will end in the coming minutes.

Sinner has three match points...