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

Tennis legend Boris Becker is understandably confused by the recordkeeping associated with Joao Fonseca's Argentina Open victory.

BUENOS AIRES -- Brazilian teenager Joao Fonseca secured his first ATP tour title on Sunday by beating local favorite Francisco Cerundolo 6-4, 7-6 (1) in the Argentina Open final.

Young sensation Joao Fonseca scripted history at the Buenos Aires Open, as he became the youngest-ever to win an ATP singles title from South America.

Brazilian teenager Joao Fonseca on Sunday became the 10th youngest champion in ATP Tour history when he swept past home hope Francisco Cerundolo in the final of the Argentina Open. The 18-year-old, ranked No. 99 in the world and playing in his first ATP Tour-level final, came through 6-4, 7-6 (7/1) against his 28th-ranked opponent.

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