Isaías Santos Ribeiro Filho (born 17 March 2002) is a Brazilian boxer.Isaías at BoxRec His nickname is "Samurai".Pugilista baiano fatura ouro e é tetracampeão brasileiro no boxe
Career At the 2021 AIBA Youth World Boxing Championships, he even won a medal for Brazil by defeating Ukrainian Illia Tohobytskyi in the quarterfinals. He won by a 3-2 decision and qualified for the semifinals. But the European country appealed the result, and it was upheld by the International Amateur Boxing Association (Aiba), which eliminated the Brazilian. Isaías Filho is eliminated on the tapetão of the Youth World Championships
At the adult 2021 AIBA World Boxing Championships, held in Belgrade, Serbia, in October 2021, he fell in the opening round of the competition. Boxing World Cup: Isaías and Nicolas lose, and Brazil has a day of falls
In 2024, he was already a four-time Brazilian boxing champion in the 92 kg category. Bahian boxer wins gold and is a four-time Brazilian boxing champion
At the 2025 World Boxing Championships, he won three fights, reaching the semi-finals and securing a medal. He also defeated Olympic medalist Loren Alfonso in the semifinals, and finished the competition with the silver medal.Brazil secures four medals at the 2025 World Boxing Championships with Rebeca Lima, Isaias Ribeiro, Luiz Oliveira and Yuri Falcão
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