Ignacio Buse defeated Joao Fonseca in the second round of the Rio Open presented by Claro, spoiling the Brazilian player's home tournament ambitions. The match, which Buse won 5-7, 6-3, 6-4 after two hours and 26 minutes, was marked by Fonseca’s 43 unforced errors. Despite losing the first set, Buse capitalized on Fonseca’s mistakes and saved eight of nine break points, including crucial moments in the second and third sets. Buse, ranked 91st, became the first Peruvian player to reach an ATP 500 quarter-final since 2009 and will face Matteo Berrettini in the next round. Meanwhile, Berrettini advanced with a three-set win over Dusan Lajovic, who is a clay-court specialist and experienced player. Other notable results include Tomas Martin Etcheverry’s victory over Vilius Gaubas, with the Argentine returning to the Top 50 rankings, and Jaime Faria’s win over Sebastian Baez. The matchups are expected to be competitive, with betting odds favoring Fonseca but with value seen in betting on Buse and Lajovic covering game handicaps.