Joao Fonseca delivered what he described as a 'rude' response to Novak Djokovic 's comments after becoming the breakthrough star of the Australian Open. Fonseca delivered a sensational display to stun Andrey Rublev in straight sets, beating the world No. 9 7-6 (1), 6-3, 7-6 (5) in the opening round on Tuesday.

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.

The tennis community raised their eyebrows after watching 18-year-old Brazilian star Joao Fonseca in his first Australian Open. The younger qualifier upset Andrey Rublev, the ninth-ranked player globally,

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.

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

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

Novak Djokovic sees a bit of himself as a young player in rising teenager Joao Fonseca and particularly welcomed the prospect of a top talent coming out of Brazil.