Joao Fonseca, the 18-year-old tennis prodigy won his first ATP Tour title on 17 February. He defeated Francisco Cerundolo in the finals of the Argentina Open by 6-4 7-6 (7-1). This victory made him the fourth-youngest player since 2000 to win an ATP Singles title after Kei Nishikori, Rafael Nadal and Carlos Alcaraz.
He is also the 10th youngest champion and the first 2006 born to win a title. Regarding his victory, he said, “What I’m living is just unbelievable. I want to thank my friends and sponsors for helping me achieve my dream – to just play tennis.”
Currently ranked as the World Number 21, Fonseca beat the fifth seed Cerundolo who was chasing his fourth title and made it to the headlines. Tennis TV took to their X account and said, “ THE FUTURE IS NOW. THE FUTURE IS JOAO.” with a video of his match.
THE FUTURE IS NOW.
THE FUTURE IS JOAO.
Your 2025 @ArgentinaOpen champion, Joao Fonseca!! 🇧🇷 pic.twitter.com/1kjys7DrRi
— Tennis TV (@TennisTV) February 16, 2025
Joao Fonseca’s Fantastic Journey

Joao Fonseca was born in Rio de Janeiro, Brazil in 2006. His father is the CEO and co-founder of the first independent hedge fund in Brazil. Fonseca started playing tennis at the age of 4 and soon made it big into the tennis world.
He won the U.S. Open junior singles title in 2023 which made him the first Brazilian to finish the season as World Number 1 in the junior category. He made his ATP debut at the Rio Open 2023 after receiving a wildcard entry. At the same tournament in 2024, he marked his first win in the tournament against Arthur Fils.
Joao Fonseca reached his first ATP Challenger final in the Paraguay Open in 2024 and won his first title in the tournament in August 2024. He began this year by winning the Canberra Tennis International on 6 January 2025.
He qualified for the Australian Open marking his debut in the tournament, where he defeated ninth seed Andrey Rublev which made him the first teenager to beat a top 10 player in the first round of Wimbledon after Mario Ancic in 2002. Fonseca entered the top 100 ranking with a ranking of Number 99, making him the first Brazilian to achieve his milestone.
He also claimed the title at the Next Gen ATP Finals in 2024 which was held for the Top 8 under-20. His most recent and also one of the biggest wins of his career is the Argentina Open title, and as a result of this victory, he achieved a career-high ranking of World Number 68 on 17 February. It will be interesting to see what the future holds for him as he continues to conquer the tennis court.
Also Read: Meet Maaya Revathi: The 15-Year-Old Tennis Prodigy Who Is In The Headlines
