Alexander Zverev saves the first.

There's a lengthy rally with neither prepared to back off for the second and Rafael Jodar gets it!

Rafael Jodar manoeuvres himself into a position at the net over the course of three returns and then slams a winner for 0-15.

Jodar gets to 0-30 but loses a little momentum when he's stretched at the baseline and returns into the net.

Alexander Zverev is very casual with a forehand to the corner and it strays well wide to hand over two break points.

On the court, Rafael Jodar gets his second successive hold to love.

The 19-year-old has found his groove.

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The roof is closed on Court Philippe Chatrier but there's a big downpour in Paris and it appears there are some gaps.

There are a few groans from the crowd as some spectators are getting soaked.

Ryan Harrison
Former French Open men's doubles champion on BBC Radio 5 Sports Extra

It is probably best for Jodar to play the drop shot.

Alexander Zverev is still taking a little time to find his rhythm on serve.

Trailing, 15-30 Zverev decides to turn up the aggression and strides up to the net where he hits a winner to level.

Zverev decides to stick with that approach and it works once more as he pulls 40-30 clear before wrapping up the hold.

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This is looking a lot more routine for Rafael Jodar.

The Spaniard steps up to the net and hits a volley winner for 40-0 before going on to hold to love.

That'll help to settle any potential nerves.

Rafael Jodar is getting the runaround at times. The teenager is sent end-to-end across the baseline before Alexander Zverev whips a forehand winner for advantage.

And the German goes on to get the hold.

We've had 18 minutes of play and just two games completed.

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Alexander Zverev hits his first ace of the match to get to advantage.

But he skews a simple return from the baseline - there might have been an awkward bounce off the clay - as they go back to deuce.

Rafael Jodar goes big from the baseline but misjudges his return and it crashes into the net.

And Alexander Zverev does a fine job of defending the second. The German forces Jodar into the corner and then emphatically volleys a winner on the next shot to get to deuce.

Ryan Harrison
Former French Open men's doubles champion on BBC Radio 5 Sports Extra

Zverev does look nervous early on.

If that opening game is anything to go by then we could be in for a long afternoon.

Alexander Zverev steps up to the net but can't get under the ball and fails to return. Rafael Jodar continues growing into the game and gets two sights at break point when Zverev goes long.

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Alexander Zverev turns to his coaching box and shakes his head as he passes up a great opportunity to get another look at breaking.

We're only in the opening game but this is already proving to be very tense.

Rafael Jodar regains advantage and finally seals the hold after an edgy eight minute tussle.

Ryan Harrison
Former French Open men's doubles champion on BBC Radio 5 Sports Extra

The young Spaniard is doing a good job getting Sasha [Zverev] moving from side-to-side.

Alexander Zverev goes big and attempts a forehand winner down the line but the German gets his angles wrong and it strays the wrong side of the chalk.

Rafael Jodar is playing some eye-catching tennis at times in this opening game. The 19-year-old gets everything behind a forehand and smashes a winner into the corner for advantage.

But he can't make it count. Zverev stands his ground and gets it back to third deuce.

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Rafael Jodar charges to the net to meet a drop shot and fires a winner down the line for deuce.

First obstacle overcome.

But Jodar is a little loose again with his forehand and Alexander Zverev has a second chance to break.

Ryan Harrison
Former French Open men's doubles champion on BBC Radio 5 Sports Extra

Zverev will be looking to stamp his authority. I think it is good signs early on.

Alexander Zverev sets the tone from the outset. A lovely cross-court winner puts the German 30-0 up against the serve.

Rafael Jodar doesn't appear to be fazed by the occasion, though, and gets back to 30-30.

Ah, an over-hit forehand hands Zverev an early look at break point.

Off we go under a closed roof on Court Philippe Chatrier.

A place in the semi-finals is up for grabs.

Will teenager Rafael Jodar continue his dream run? Or will second seed Alexander Zverev reach his fifth French Open semi-final?

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Alexander Zverev has been knocking on the door at the French Open for several years - reaching one final, three semi-finals and one quarter-final.

But his path to the title this year has become a little more straightforward - with no Carlos Alcaraz, Jannik Sinner or Novak Djokovic to contend with.

Zverev, seeded second, is the highest ranked player remaining in the men's singles draw.