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Temporary relief for Lorenzo Musetti as Carlos Alcaraz lets his opponent off with a warning, netting on break point.

You'd back the world number two to make that shot nine out of 10 times.

A tough opening game for Lorenzo Musetti, as Carlos Alcaraz puts the Italian under immediate pressure.

Musetti drifts a backhand long and the defending champion will have a look at a first break point.

The players are ready. The roof is closed. The stakes are high.

Lorenzo Musetti will serve first against defending champion Carlos Alcaraz.

Away we go on Court Philippe Chatrier!

Greg Rusedski
Former British number one on BBC Radio 5 Live

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Lorenzo Musetti is phenomenal.

We saw him a few years back as a teenager beating the former French Open champion, Stan Wawrinka in Rome.

That was when he was a 16-year-old. He’s now a top 10 player and ranked world number seven.

He’s kind of like Jack Draper, whose had a meteoric rise.

Clay courts are Musetti's best surface - stylish Italian player.

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Carlos Alcaraz has already beaten semi-final opponent Lorenzo Musetti twice on the clay this year - in a semi-final in Rome and the final in Monte Carlo.

However, those are two of only three defeats Musetti has suffered during an excellent clay-court season, with his record this year on the surface now at 19 wins.

With a self-confessed "retro style", he is one of the few players on tour with a one-handed backhand, which he says has come naturally since picking up a racquet as a child.

In the build-up to his quarter-final, he said he was "in the best period of his life" and that joy has been compounded by news that his partner Veronica is pregnant with their second child.

Tuscany-born Musetti said becoming a father to their son, Ludovico, in March last year changed his attitude on court and he has since been able to "play and do better".

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

Looking at the coin toss, Carlos Alcaraz said 'you serve first'.

He wants to see if Lorenzo Musetti gets nervous.

If Musetti's on song, he could really threaten Alcaraz.

Defending champion Carlos Alcaraz appears to have hit top gear at the perfect time.

After losing just five games in his straight-set quarter-final win over American Tommy Paul, the Spaniard said: "I could close my eyes and everything [would have gone] in.

"My feeling today was unbelievable. I was trying to hit every shot at 100% - not thinking about anything else, just hitting."

The four-time major winner did not face a single break point in that match.

And he'll will now target a sixth successive win over Lorenzo Musetti, having lost just one set in their previous five meetings.

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The era of the 'Big Three' may be coming to an end - but the threat has not disappeared entirely.

Players born in the 1990s were restricted to just two Grand Slam singles titles between them as Roger Federer, Rafael Nadal and Novak Djokovic diced up the major prizes for more than two decades.

Two players born after 2000 have captured seven major titles between them. That is the current top two of Jannik Sinner and Carlos Alcaraz, who are on a collision course in Paris.

But Novak Djokovic still looms large as the 'Gen Z' players look to add to their hauls.

The 38-year-old faces Sinner - who is 15 years younger than him - in Friday's second French Open semi-final, having become the oldest man to reach the last four since 1968.

"I think at the moment he's a bit underrated," world number three Alexander Zverev said after falling to Djokovic in four sets on Wednesday.

"I think a lot of people count him out already, but this year he's had wins over Carlos at the Australian Open, he has beaten me at the French Open. Forget the age. For any player, those are pretty good results."

BBC Radio 5 Live Sports Extra

You can listen to live coverage from Roland Garros on BBC Radio 5 Live Sports Extra.

Tune into BBC Radio 5 Live Sports Extra on BBC Sounds, or simply click 'Listen live' at the top of this page.

This afternoon we'll find out who will be contesting Sunday's men's singles final at Roland Garros.

And the biggest names in men's tennis are still standing, with four of the world's current top six players in the live rankings featuring in today's semi-finals.

Defending champion Carlos Alcaraz takes on eighth seed Lorenzo Musetti in the first semi-final imminently.

Then, from about 18:00 BST, world number one Jannik Sinner will play 24-time Grand Slam champion Novak Djokovic.

A place in the men's final is on the line in a blockbuster Friday line-up at Roland Garros.

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The new generation are taking centre stage, but the threat of Novak Djokovic still looms large.

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Who will set up their shot at glory?