Exactly a year ago, Joao Fonseca was ranked World No. 655 after he decided to go pro. On Monday, the 18-year-old had risen to a career-high World No. 68 in the latest ATP Rankings.
As part of his meteoric rise, Fonseca captured his maiden ATP 250 championship in Buenos Aires on Sunday, becoming the youngest South American player in the ATP Tour era (since 1990) to win a title. He also became the second-youngest South American to win a title in the Open Era, behind only Argentina's Guillermo Perez-Roldan.
João Fonseca poses with his first ATP trophy.
— The Tennis Letter (@TheTennisLetter) February 16, 2025
The first of many.
pic.twitter.com/ACU9gAMSpt
THE FUTURE IS NOW.
— Tennis TV (@TennisTV) February 16, 2025
THE FUTURE IS JOAO.
Your 2025 @ArgentinaOpen champion, Joao Fonseca!! pic.twitter.com/1kjys7DrRi
Fonseca is now part of an exclusive list of all-time great players who won titles as teenagers on the ATP Tour.
Youngest champions in ATP Tour era (since 1990):
— Tennis TV (@TennisTV) February 16, 2025
16y 10m 18d - Lleyton Hewitt
17y 9m 21d - Andrei Medvedev
18y 1m 19d - Kei Nishikori
18y 2m 12d - Rafael Nadal
18y 2m 20d - Carlos Alcaraz
18y 5m 7d - Michael Chang
18y 5m 26d - JOAO FONSECA @ArgentinaOpen pic.twitter.com/ppKkSuURLk
Fonseca's rise isn't a big shock to analysts who predicted him to shake up the ATP circuit this season. Last year, he reached two ATP Tour quarterfinals, at Bucharest and Rio de Janeiro, and ended his season with a dominant showing at the ATP Next Gen Finals. He would follow those exploits by upsetting World No. 9 Andrey Rublev in straight sets in his major debut at the Australian Open in January, breaking into the top-100 ATP Rankings for the first time in his career.
At his current trajectory, it wouldn't be far-fetched to predict that Fonseca could break into the top 20 by the end of 2025. The youngster has already set some lofty goals, declaring his ambition to become World No. 1 and win majors. However, Fonseca doesn't plan to skip any steps and wishes to learn from the growing pains he expects to encounter.
'Of course I want to be No.1, of course I want to win Slams - but my dream is just play tennis, and I'm living it'
— Tennis TV (@TennisTV) February 16, 2025
18-year-old Joao Fonseca, wise beyond his years. pic.twitter.com/g0f0iYPVTG
Fonseca — who grew up playing on the clay courts in Brazil — is a dark-horse candidate to win the upcoming ATP500 event in Rio. He has also been earmarked to make serious noise on the ATP clay swing at Monaco, Barcelona, Madrid and Rome, the events leading to the 2025 French Open in June.
Tennis great Andy Murray is already excited about the prospect of Fonseca facing reigning Roland Garros champion Carlos Alcaraz at one of those events. Alcaraz himself is thrilled about a potential new foe.
Can’t wait for the first Fonseca vs Alcaraz match ❤️
— Andy Murray (@andy_murray) February 16, 2025
Impressive Joao! Many congrats!!!
— Carlos Alcaraz (@carlosalcaraz) February 16, 2025
Once he breaks into the top 50, Fonseca would no longer have to qualify for majors, as he had to do at the Australian Open earlier this year. As he grows in confidence, his opponents probably grow weary.
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