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MELBOURNE, Australia — 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. The victory Tuesday night was quite a debut in the main draw of a Grand Slam tournament for the 18-year-old Fonseca. He is a Brazilian who is currently ranked 112th in the world and made it into the bracket at Melbourne Park by winning three matches in qualifying rounds last week. The victory over 10-time major quarterfinalist Rublev, who is 27, stretched Fonseca's unbeaten run to 14 matches.
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Joao Fonseca of Brazil celebrates after defeating Andrey Rublev of Russia in their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2025. - AP Photo/Asanka Brendon Ratnayake
