In short:

French tennis player Moise Kouame has become the youngest player to win a match at the Miami Open.

The teenager is also the youngest player since Rafael Nadal in 2003 to win a match in an ATP Masters 1000 event.

What's next?

Kouame will face 21st-seeded Czech Jiri Lehecka in the next round.

Teenager Moise Kouame has stolen the spotlight as Australians Alexei Popyrin and James Duckworth crash out of the multi-million-dollar Miami Open. 

Kouame became the first player born in 2009 or later to win an ATP Tour match with a fighting 5-7, 6-4, 6-4 victory over American qualifier Zachary Svajda.

Competing as a wildcard in his first main-draw ATP Masters 1000 match, the 17-year-old Frenchman delivered a composed performance to etch his name into the history books.

With his victory, Kouame also became the youngest Miami match winner and the youngest to claim an ATP Masters 1000 victory since the great Rafael Nadal in Hamburg in 2003.

"It's huge," Kouame told the Tennis Channel.

"First main draw at a Masters 1000 here in Miami, it's such a cool place. I'm really happy to win that match today and hopefully I can win many more.

"It's my first time, so I didn't expect all of this, but here I am. I need to get used to it pretty fast. It brings me a lot of confidence. It shows me that I'm on the right path. I just need to keep working."

At a career-high world number 385, Kouame is the youngest player inside the top 900 and has soared to fourth in the Next Gen Race.

Next up in Miami is the 21st-seeded Czech Jiri Lehecka, as he looks to extend his dream debut.

But while Kouame marches on, Popyrin's slow start to the year continued with a 6-4, 6-4 loss to revitalised three-time grand slam finalist and 2014 US Open champion Marin Cilic.

After cracking the world's top 20 last year, Popyrin — the only Australian since Lleyton Hewitt more than two decades ago to conquer Novak Djokovic — has only won two matches thus far in 2026.

Duckworth also lost to a veteran, bowing out 7-6 (7-3), 7-6 (7-4) to Spaniard Roberto Bautista Agut.

In other matches, former French and Australian Open runner-up Stefanos Tsitsipas beat French-born British qualifier Arthur Fery 6-1 7-6 (7-4) to set up a second-round showdown with Australia's world number six Alex de Minaur.

AAP with agencies