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,

Francisco Cerundolo stunned World No. 2 Alexander Zverev 3-6, 6-3, 6-2 in the Buenos Aires quarterfinals, marking the biggest win of his career. His previous-best career win by ranking came against a No.

Rising tennis star João Fonseca has finished what he called “an unbelievable week” with a straight sets victory over Francisco Cerúndolo in the final of the Argentina Open to claim his first tour-level title.

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. Fonseca lost 6-1, 7-6 (4) to Alexandre Muller of France on Tuesday.

Brazilian 18-year-old Joao Fonseca saved two match points and pushed past Argentina's Mariano Navone 3-6, 6-4, 7-5 in the quarterfinals of the IEB+ Argentina Open on Friday in Buenos Aires. The match lasted two hours and 54 minutes and saw home favorite Navone serve for the match in the 10th game of the third set.

Teenager Joao Fonseca underlines why he is one of tennis' most promising stars by beating Francisco Cerundolo to claim his first ATP Tour title.

Brazilian teenager Joao Fonseca on Saturday became the youngest clay-court finalist since Carlos Alcaraz in 2021 when he reached the championship match at the Argentina Open.If he wins the final, Fonseca will emulate Alcaraz,