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.

Teenager João Fonseca won his first ATP Tour title at the Argentina Open on Sunday, announcing himself as one of tennis’ brightest talents.

The home star Joao Fonseca failed to make an impression at the ATP 500 event in Rio. The 18-year-old competed in front of the home fans two days after lifting his first ATP trophy in Buenos Aires. The Brazilian failed to extend the winning streak following a 6-1, 7-6 loss to Alexandre Muller.

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.

Joao Fonseca's rise in recent months has left fans and insiders speechless. The Brazilian ace's talent had already emerged during the Rio Open a year ago, when he reached the quarterfinals thanks to a series of incredible performances for such a young player.

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 is the tenth-youngest ATP finalist since 2000, achieving the feat before the legends like Roger Federer and Novak Djokovic! Joao saved two mat

Regardless of ranking and seedings, the story of this year’s Golden Swing is Joao Fonseca. He would have been the main narrative even if he was losing, but the Brazilian clinched his maiden ATP Tour title.