Argentinian tennis player Thiago Agustín Tirante, ranked 92nd in the world, defeated Chile's Cristian Garín (89th) in two sets on the first day of the Rio Open 2026. According to the Argentine News Agency, the player from La Plata advanced to the round of 16 of the ATP 500 tournament in Rio de Janeiro, Brazil, with a score of 7-5 and 6-3 in 1 hour and 54 minutes of play. Following the victory, Tirante awaits his next opponent, who will emerge from the match between Argentines Francisco Cerúndolo (19th, top seed and recent Argentina Open champion who beat Italian Luciano Darderi) and Mariano Navone (74th). The first set was closely contested, and Tirante showed composure, staying calm under pressure and capitalizing on opportunities against the Chilean. After a furious start of 3-0 and breaking Garín's serve in the first game, both players held their serves, and it seemed Tirante would easily take the set. Garín broke back in the fifth game, but the 'albiceleste' responded in the next to quickly recover and go up 4-2. Without further ado, Tirante secured the win and a place in the next round of the Brazilian tournament. In other matches of the day, Czech Vit Kopriva (87th) defeated local Gustavo Heide (258th) 6-2 and 7-6(5); Chile's Alejandro Tabilo (68th) crushed American Emilio Nava (76th) 6-3 and 6-3; and Dusan Lajovic (128th) surprised by defeating German Daniel Altmaier (54th, seventh seed) in straight sets 6-4 and 7-6(7). First-round results of the Rio Open 2026: Thiago Tirante vs. Cristian Garín: 7-5 and 6-3. Dusan Lajovic vs. Daniel Altmaier: 6-4 and 7-6(7). Alejandro Tabilo vs. Emilio Nava: 6-3 and 6-3. Vit Kopriva vs. Gustavo Heide: 6-2 and 7-6(5). Igor Marcondes vs. Ignacio Buse. Yannick Hanfmann vs. Joao da Silva. Nevertheless, the ninth game went to Garín, who then leveled the score at 5-5 in the tenth. There, the player from La Plata demonstrated his offensive power by going up 6-5 and then breaking his rival's serve again in the twelfth game to win the first set 7-5. A similar scenario unfolded in the second set, with Tirante trying not to make the same mistakes to win the set more comfortably.
