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

Teenage rising star Joao Fonseca said nerves got the better of him after being bundled out of the Australian Open 2025 by Italian Lorenzo Sonego in a five-set thriller on Thursday. The highly rated Brazilian,

Endless queues outside Melbourne Park's 1573 Arena on a sunny Thursday afternoon gave casual fans the impression that a Grand Slam champion was in action, but a quick peek inside revealed the carnival atmosphere and explained the interest.

The 18-year-old produced a stunning first-round victory over world number nine Andrey Rublev in the first round in Melbourne before losing in five sets to Lorenzo Sonego at the next stage

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.

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.

Backed by a raucous Brazilian contingent on Court 1573, Fonseca took the hour-long opener in the decider, eventually clinching set point at the fourth time of asking

Italy's Lorenzo Sonego beat Brazilian Joao Fonseca, widely considered the rising star of international tennis, 6-7 6-3 6-1 3-6 6-3 on Thursday to reach the third round of the Australian Open. Lorenzo Musetti is also in the third round after beating Canadian Denis Shapovalov 7-6,

Teenage rising star Joao Fonseca was bundled out in the Australian Open second round on Thursday by wily Italian Lorenzo Sonego in a five-set thriller. But the teenager was not done and a Sonego double fault handed him a break for 2-0 in the fourth set,