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,

Joao Fonseca is making a name for himself in the season's early months! The 18-year-old Brazilian scored his first top-10 win at Majors at the Australian Open and shifted that form to Buenos Aires. A teenager defeated four rivals at the ATP 250 event for his first ATP final!

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.