Joao Fonseca definitively introduced himself to the world as the latest teen sensation in men’s tennis, upsetting No. 9 seed Andrey Rublev in the first round of the Australian Open.

Joao Fonseca has become the talk of the town in Melbourne after causing a big upset at the Australian Open. The 18-year-old qualifier stunned No. 9 seed Andrey Rublev in straight sets as he made his Grand Slam main draw debut on Tuesday.

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.

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.

Joao Fonseca has long been admired for his aggressive and mentally strong display on the court since turning pro last year. But on Tuesday (January 15), the Brazilian teenager stunned the tennis world by knocking out No.

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

At just 18, João Fonseca is putting the tennis world on notice, as illustrated by his clinical straight-sets victory over ninth seed Andrey Rublev at the Australian Open.

In his first-ever Grand Slam match, Fonseca defeated World No. 9 Andrey Rublev in straight sets: 7-6 (1), 6-3, 7-6 (5). The match was evenly contested, but Fonseca was dominant with his power and agility.

Fonseca, Fonseca, Fonseca. You’ve gotta watch Fonseca. It’s all I kept hearing. Fonseca’s a freak. Fonseca’ll be in the next Big Three. I clocked off work and grabbed a cold one late on Tuesday night to watch Joao Fonseca obliterate Andrey Rublev.

The qualifier, who reached his first grand slam main draw, faces ninth seed Andrey Rublev in the opening round

João Fonseca definitively introduced himself to the world as the latest teen sensation in men's tennis on Tuesday night, upsetting No. 9 seed Andrey Rublev 7-6 (1), 6-3, 7-6 (5) in the first round of the Australian Open.