Brazilian 18-year-old Joao Fonseca defeated Argentine fifth seed Francisco Cerundolo 6-4, 7-6 (1) to win his first ATP Tour title at the IEB+ Argentina Open on Sunday in Buenos Aires. Fonseca is the youngest South American player to win a tournament in the ATP Tour era,

Teenage tennis sensation João Fonseca frustrated his home fans at the Rio Open in a first-round loss two days after winning his first ATP title.

Joao Fonseca demonstrated why many think he will reach the very top of tennis during an outstanding run to the title at the 2025 Argentina Open in Buenos Aires. Some world stars congratulated him