| Singles | |
|---|---|
| 2024 Curitiba Challenger | |
| 2023 Champion |  Hugo Dellien |
Hugo Dellien is the defending champion. [1]
| Singles | |
|---|---|
| 2024 Curitiba Challenger | |
| 2023 Champion | Hugo Dellien |
Hugo Dellien is the defending champion. [1]
| Semifinals | Final | ||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 |  C Ugo Carabelli | ||||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 2 | H Dellien | ||||||||||||||||||||||||||
Marin Draganja and Dino Marcan were the defending champions, but they did not compete in the Juniors this year.
Tennys Sandgren was the defending champion but chose not to defend his title.
Márton Fucsovics was the defending champion but chose not to defend his title.
Filip Krajinović was the defending champion but chose not to defend his title.
Máximo González and Fabrício Neis were the defending champions but only Neis chose to defend his title, partnering Rafael Matos. Neis lost in the quarterfinals to Thiago Monteiro and Pedro Sakamoto.
This was the first edition of the tournament.
Laslo Đere won the title – the first of his career – defeating Félix Auger-Aliassime in the final, 6–3, 7–5. No seeded players reached the quarterfinals, and only one seed won his first-round match.
Nikoloz Basilashvili was the defending champion and successfully defended his title, defeating Andrey Rublev in the final, 7–5, 4–6, 6–3. En route to doing so, Basilashvili saved two match points against Alexander Zverev in the semifinals.
Martin Kližan was the defending champion but lost in the first round to Matthias Bachinger.
Hugo Dellien and Guillermo Durán were the defending champions but only Dellien chose to defend his title, partnering Federico Zeballos. Dellien and Zeballos withdrew before their quarterfinal match.
Roger Federer was the two-time defending champion and successfully defended his title, defeating Alex de Minaur in the final, 6–2, 6–2. He did not lose a single set in the entire tournament. The victory made Federer the first player in ATP history to win 10 same tournament titles on two different surfaces. It was his 103rd and final ATP title before announcing his retirement in 2022.
Hugo Dellien was the defending champion but chose not to defend his title.
Daniel Elahi Galán was the defending champion, but chose not to defend his title.
Hugo Dellien was the defending champion but lost in the quarterfinals to Juan Manuel Cerúndolo.
Jaume Munar was the defending champion but lost in the semifinals to Juan Ignacio Londero.
This was the first edition of the tournament.
Casper Ruud defeated the defending champion Diego Schwartzman in the final, 5–7, 6–2, 6–3 to win the singles title at the 2022 Argentina Open.
Sebastián Báez was the defending champion but chose not to defend his title.
This was the first edition of the tournament.
Sebastián Báez defeated Frances Tiafoe in the final, 6–3, 6–2 to win the singles tennis title at the 2022 Estoril Open. It was his maiden ATP Tour title.
