Image source, Getty Images

The manner in which Jannik Sinner continues to tear his way through the draw - in only his second tournament back from a three-month ban for failing two doping tests - is an ominous sign for his rivals.

The 23-year-old world number one has been the dominant player on the ATP Tour over the past 18 months and, after reaching the Rome final last month, has simply carried on from where he left off.

Victory over Alexander Bublik extended Sinner's winning run at the majors to 19 matches after triumphs at last year's US Open and the Australian Open in January.

Greg Rusedski
Former British number one on BBC 5 Sports Extra 2

Jannik Sinner has impressed me. He is striking the ball beautifully. Physically, I have to give the younger man the advantage.

This is Novak Djokovic's 51st Grand Slam semi-final. He has a 38th final in his sights, and a 25th title.

His victory over Alexander Zverev on Wednesday was his 387th win at Slams.

Image source, Getty Images

Janik Sinner is yet to drop a set at Roland Garros as he aims to win the French Open for the very first time.

By reaching the semis this year, he has matched his best ever showing at the clay court Grand Slam.

Image source, Magnum Photos

Jannik Sinner and Novak Djokovic are out on court now going through their paces before we get this semi-final under way.

Jonathan Jurejko
BBC Sport senior tennis reporter at Roland Garros

Within minutes of Carlos Alcaraz heading back to the locker room, there was another famous figure striding out onto Court Philippe Chatrier.

Novak Djokovic headed out for a loosen up before his semi-final in a virtually empty stadium.

Since he split with rival-turned-coach Andy Murray last month, Djokovic has been guided by fellow Serbs Dusan Vemic and Boris Bosnjakovic.

The pair watched Djokovic go through his full repertoire of shot in a half-hour session.

Image source, BBC Sport

While age is clearly catching up on Novak Djokovic, his insatiable appetite for Grand Slam success shows no signs of slowing down.

A patchy season by his lofty standards has led to questions about his stamina and motivation, while the departure of rival-turned-coach Andy Murray from his team also indicated things were not functioning as he hoped.

But when the major tournaments come around, Djokovic is always still primed to challenge in the latter stages.

In Melbourne, he defied the odds to beat Carlos Alcaraz and reach the semi-finals, although the physical exertions led to a hamstring tear which meant he had to retire injured against Alex Zverev in the last-four encounter.

Nevertheless, it showed he still had the desire and capability to beat the younger generation over the five-set format.

Ready for another semi-final?

World number one Jannik Sinner and 24-time Grand Glam champion Novak Djokovic are about to put on some Friday night entertainment for us...

So, who will Carlos Alcaraz face in Sunday's men's final at Roland Garros?

Will it be world number one Jannik Sinner, or 24-time major winner Novak Djokovic?

That is absolutely not one to miss later today.

We're going to pause here but you can join us again from around 18:00 BST for live text and radio coverage of what promises to be an epic showdown at the French Open.

Only Bjorn Borg and John McEnroe (81 each) achieved 70 wins in fewer Grand Slam men's singles matches than Carlos Alcaraz (82) in the Open era.

And he is now just one win away from becoming only the third man to defend the Roland Garros title this century.

Whoever he faces, that final is going to be some spectacle.

Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds

The pressure was on and the expectation was there [for Carlos Alcaraz].

Lorenzo Musetti kept the pressure on, but after the tie-breaker it was one-way sailing.

Image source, Getty Images

More from Carlos Alcaraz, on watching Novak Djokovic and Jannik Sinner in the second men's semi-final later today: "For sure. I'm not going to miss it! This match is one of the best match-ups we have in tennis right now.

"It is going to be great tennis. I'm going to watch it, and I'm going to enjoy it. I'm going to take tactics from the match.

"They're going to play great tennis."

On how he feels after reaching a second French Open final: "Right now, I'm feeling great and feeling good. It has been three intense weeks. I feel that I'm playing great tennis.

"I'm just going to give everything on Sunday. I've been doing great things in this tournament."

Carlos Alcaraz, speaking after reaching the French Open final following Lorenzo Musetti's fourth-set retirement: "It is never great getting through winning the match like this.

"Lorenzo is a great player. He has done an incredible clay season. He's one of the few players who has achieved semi-finals. I wish him all the best and a quick recovery.

"The first two sets were really tough. I had chances to break his serve in the match and I couldn't make the most of it.

"He was playing great tennis. When I won the second set there was relief. In the third set, I knew what I had to do in the beginning - pushing him to the limit and trying to be aggressive.

"I was more calm and I could see this more clear and I could play great tennis."

Image source, Getty Images

Carlos Alcaraz has become the second Spanish man to reach five Grand Slam finals, after his childhood hero Rafael Nadal.

He is also just the third active male player to contest as many as five Grand Slam finals, after Novak Djokovic (37) and Daniil Medvedev (six).

Let's hear what he has had to say in his on-court interview.

It is a second successive French open final for defending champion Carlos Alcaraz, who will bid for his fifth major title at the age of 22 on Sunday.

He had already begun to take charge before Lorenzo Musetti's injury-enforced decline and will likely go into the final much fresher than either Jannik Sinner or Novak Djokovic after those two go head-to-head next on Court Philippe Chatrier.

Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds

Such a shame. It's not the way you want to go out. Carlos Alcaraz is very respectful and he's not celebrating.

Image source, Getty Images

Carlos Alcaraz consoles Lorenzo Musetti at the net.

That is not the way anyone wanted this match to end - nor expected after Musetti put up an incredible fight for the first two hours.

The Italian will rise to sixth in the world rankings next week.

Carlos Alcaraz breaks in the fourth set - and that is all the injured Lorenzo Musetti is prepared to go through.

Gutting for the Italian. He has retired and Alcaraz marches on to the French Open final.

The atmosphere has fallen flat inside Court Philippe Chatrier.

This could be the beginning of the end for Lorenzo Musetti as Carlos Alcaraz sets up a break point.

Greg Rusedski
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds

Lorenzo Musetti needs to hold this opening game. The crowd want to see a match.