Argentina's Francisco Cerundolo celebrates a point against Germany's Alexander Zverev during an Argentina Open ATP quarterfinals tennis match at the Guillermo Vilas Stadium in Buenos Aires.
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. 3-ranked Casper Ruud at another clay-court event, Barcelona, in 2023. In another quarter-final match, Brazilian teenager Joao Fonseca saved two match points in a thrilling 3-6, 6-4, 7-5 win over Mariano Navone to become the youngest ATP clay-court semifinalist since Carlos Alcaraz four years ago. Pedro Martinez advanced to the semifinals after receiving a walkover from Lorenzo Musetti.
Argentina's Francisco Cerundolo celebrates a point against Germany's Alexander Zverev during an Argentina Open ATP quarterfinals tennis match at the Guillermo Vilas Stadium in Buenos Aires.
Argentina's Francisco Cerundolo celebrates a point during an Argentina Open ATP quarterfinals tennis match against Germany's Alexander Zverev in Buenos Aires, Argentina.
Germany's Alexander Zverev serves to Argentina's Francisco Cerundolo during an Argentina Open ATP quarterfinals tennis match at the Guillermo Vilas Stadium in Buenos Aires.
Argentina's Francisco Cerundolo returns the ball to Germany's Alexander Zverev during an Argentina Open ATP quarterfinals tennis match in Buenos Aires, Argentina.
Brazil's Joao Fonseca reacts to defeating Argentina's Mariano Navone at the end of an Argentina Open ATP quarterfinals tennis match at the Guillermo Vilas Stadium in Buenos Aires.
Brazil's Joao Fonseca reacts to defeating Argentina's Mariano Navone at the end of an Argentina Open ATP quarterfinals tennis match at the Guillermo Vilas Stadium in Buenos Aires.
Argentina's Mariano Navone returns the ball to Brazil's Joao Fonseca during an Argentina Open ATP quarterfinals tennis match at Guillermo Vilas Stadium in Buenos Aires, Argentina.
Brazil's Joao Fonseca returns the ball to Argentina's Mariano Navone during an Argentina Open ATP quarterfinals tennis match at Guillermo Vilas Stadium in Buenos Aires, Argentina.
Argentina's Mariano Navone serves to Brazil's Joao Fonseca during an Argentina Open ATP quarterfinals tennis match at Guillermo Vilas Stadium in Buenos Aires, Argentina.