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.

Qualifier Joao Fonseca stunned ninth seed Andey Rublev on his grand slam debut at the Australian Open to extend his winning streak to 14 matches. The 18-year-old Brazilian, who is quickly becoming a superstar in his home country,

Joao 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.

The biggest upset of the 2025 Australian Open took place on Tuesday morning. Brazilian Joao Fonseca took down No. 9 seed Andrey Rublev in straight

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The third day of the 2025 Australian Open on Wednesday was filled with drama as No. 7 Novak Djokovic survived a scare against qualifier Jaime Faria, and No. 3 Coco Gauff was pushed to the brink by Jodie Anna Burrage.