Fonseca was part of the 2024 lineup alongside Fils and Luca Van Assche of France; Michelsen, eventual finalist Learner Tien and Nishesh Basavareddy of the U.S.; Jakub Mensik of the Czech Republic and Shang Juncheng of China, who also goes by his Americanized name, Jerry Shang.

Brazilian teen Joao Fonseca was one of the first surprises of the 2025 Australian Open, after he defeated ninth seed Andrey Rublev. Check out all you need to know about this young talent.

Who is Joao Fonseca? 18-year-old Brazilian wonderkid stuns Andrey Rublev at Australian Open - The qualifier defeated World No 9 Rublev on his grand slam debut to extend his winning run to 14 matches

Fonseca has long looked like a star-in-waiting. Under pressure in his first Grand Slam set, he delivered beyond those lofty expectations

Joao Fonseca says Australian Open expectations are changing to the mentality of a champion after dumping out ninth seed Andrey Rublev; Daniil Medvedev smashes net camera after angry outburst during five-set win over world No 418;

Joao Fonseca is the talk of tennis after his incredible win against Andrey Rublev on his Grand Slam debut at the Australian Open – and it has edged him towards one of the first big rankings targets of his career.