Teenagers Joao Fonseca and Alex Michelsen score big upset ATP wins

Fonseca and Michelsen become fan-favorites after their emotional wins in Rio and Los Cabos

Sarah Stier/GettyImages
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17-year-old Brazilian Joao Fonseca won his first career match on the ATP Tour in front of the home crowd at the Rio Open on Wednesday. He was one of two teenagers who recorded big wins on the ATP Tour on Wednesday. The other was 19-year-old American Alex Michelsen who turned pro in 2023 and is ranked 73rd in the world who defeated Alex de Minaur in Los Cabos.

Fonseca, who received a wildcard to play the event, took out the seventh seed (and World No. 36) Arthur Fils, 19, in straight sets 6-0, 6-4. He will face Chilean player Cristian Garin, the 2022 Wimbledon quarterfinalist, in the Round of 16. Garin is ten years older than Fonseca who becomes the first player to win an ATP match born in 2006 or later.

He has big dreams. One is to be the number one player in the world. Fonseca has also committed to continuing his tennis career at the University of Virginia in fall 2024. This is a decision that he could revisit this summer after evaluating his performance in the spring tournaments.

Fonseca was a highly successful junior player who won the 2023 US Open junior championship. He has trained with the world's best such as Daniil Medvedev and Jannik Sinner at the 2023 ATP Finals in Turin. His forehand is already a weapon, and his game will only get better. Remember his name.

Alex Michelsen also records big win over Alex de Minaur

Alex Michelsen who has played 26 career ATP matches and is 13-13 got the biggest win of his career in Los Cabos with a straight-set victory over the tournament's third seed and World No. 9 Alex de Minaur.

This is his first victory over a Top 10 player and a commanding one where Michelsen was all over the court making great shots against a flat de Minaur who likely suffered from overscheduling and jet lag after playing in the final at Rotterdam on Sunday.

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