Joao Fonseca will be one of the main candidates among the stars looking to close the gap on Carlos Alcaraz and Jannik Sinner at the top of the rankings in 2026.
The Brazilian enjoyed an impressive debut season on the tour, during which he claimed his first two ATP titles.
Fonseca won his first tour-level crown at the Argentina Open earlier in 2025 and secured a maiden ATP 500 trophy at the Swiss Indoors in late October.
Following his triumph in Basel, Fonseca reached a career-high ranking of world number 24, a position that will see him seeded for the upcoming Australian Open.
He will be hoping to climb even further up the rankings in 2026, which former US Open finalist Kei Nishikori thinks he is capable of, should he make a few changes in his game.
Kei Nishikori analyses Joao Fonseca’s game ahead of 2026
Nishikori played and lost to Fonseca at a Challenger Tour event in Phoenix in 2025, and had high praise for the teenager when reflecting on the bout in an interview with WOWOW.
“His ball is fast and heavy, said the Japanese star. “He also has a good angle, so I think he’s a player who plays well.
What pundits and players have been saying about Joao Fonseca…
“He’s incredibly powerful and has a pretty good serve, so I think he’s a symbol of today’s young tennis players.
“If he could just reduce his mistakes a little more, I think he could easily get into the top 10, or even the top five, and I think he has the personality to reach the top.
“(Fonseca) threw balls with speeds I’ve never faced before, so I couldn’t let my guard down during the rallies.
“Any ball that was even slightly soft would be hit back, so I was under constant pressure. I think that kind of strength is something only a young player can have. I’m sure Fonseca will improve.”
Joao Fonseca’s last campaign at the Australian Open
Fonseca made his Grand Slam debut at the Australian Open in 2025, having reached the main draw of the tournament by not dropping a set in the qualifying stages.
In the first round, Fonseca announced himself to the tennis world with, at that point, the biggest victory of his career.
He overcame ninth seed Andrey Rublev in straight sets, winning 7-6, 6-3, 7-6 against the Russian to advance.
His campaign came to a halt in round two, however, when Fonseca suffered a tough five-set defeat to Lorenzo Sonego.
Now, with a year of experience under his belt, Fonseca will look to make a deep run at the 2026 Australian Open.
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