Number six seed Nicolás Jarry of Chile was eliminated in the first round of the Argentina Open on Monday.
Italian Lorenzo Sonego knocked out Jarry with a 6-7 (3), 6-4, 6-3 victory at Buenos Aires Lawn Tennis Club.
Albert Ramos Viñolas of Spain, Christian Garín of Chile and German Maximilian Marterer also advanced.
Ramos Viñolas beat Brazilian Rogerio Dutra Silva 6-3, 6-4, and Garín eliminated Felix Auger-Aliassime of Canada with a 3-6, 7-5, 6-3 win at the clay-court tournament.
Marterer posted a 6-4, 6-2 victory over local favourite Facundo Bagnis.
Monday, Buenos Aires Lawn Tennis Club, Buenos Aires, Argentina.
Singles, First Round
Lorenzo Sonego, Italy, defeated Nicolás Jarry (6), Chile, 6-7 (3), 6-4, 6-3.
Albert Ramos Viñolas, Spain, defeated Rogerio Dutra Silva, Brazil, 6-3, 6-4.
Maxi Marterer, Germany, defeated Facundo Bagnis, Argentina, 6-4, 6-2.
Christian Garín, Chile, defeated Felix Auger-Aliassime, Canada, 3-6, 7-5, 6-3.
Doubles, First Round
Marco Cecchinato, Italy, and Dusan Lajovic, Serbia, defeated Federico Delbonis and Guillermo Duran, Argentina, 4-6, 6-3, 10-8.
Roberto Carballes Baena, Spain, and Malek Jaziri, Tunisia, defeated Sander Gille and Joran Vliegen, Belgium, 6-3, 7-6 (4).
Marcelo Demoliner, Brazil, and Frederik Nielsen, Denmark, defeated Marcelo Arévalo, El Salvador, and Jamie Cerretani, United States, 6-3, 3-6, 10-5.