# 2023 Viña Challenger – Singles

This was the first edition of the tournament.
Thiago Seyboth Wild won the title after defeating Hugo Gaston 7–5, 6–1 in the final.

## Seeds

* Hugo Dellien (withdrew)
* Hugo Gaston (final)
* Camilo Ugo Carabelli (quarterfinals)
* Felipe Meligeni Alves (first round)
* Franco Agamenone (first round)
* Facundo Díaz Acosta (first round, retired)
* Luciano Darderi (first round)
* Riccardo Bonadio (quarterfinals)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| SE | Thiago Seyboth Wild | 6 | 6 | | | | |
| | Tomás Barrios Vera | 3 | 4 | | | | |
| | Tomás Barrios Vera | 3 | 4 | SE | Thiago Seyboth Wild | 7 | 6 |
| | | | | 2 | Hugo Gaston | 5 | 1 |
| | Andrea Vavassori | 6$^1$ | 2 | 2 | Hugo Gaston | 5 | 1 |
| 2 | Hugo Gaston | 7$^7$ | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| Q | J Pereira | 2 | 6 | 6 | | | | | | | | | | | | | | |
| WC | Daniel Antonio Núñez | 6 | 2 | 4 | Q | J Pereira | 6 | 2 | 4 | | | | | | | | | |
| | A Pellegrino | 6 | 6 | | | A Pellegrino | 4 | 6 | 6 | | | | | | | | | |
| LL | G Villanueva | 0 | 2 | | | | | | | | A Pellegrino | 6 | 4 | 3 | | | | |
| | L Midón | 5 | 2 | | | | | | | SE | T Seyboth Wild | 3 | 6 | 6 | | | | |
| SE | T Seyboth Wild | 7 | 6 | | SE | T Seyboth Wild | 6 | 4 | 6 | | | | | | | | | |
| Q | O Luz | 4 | 6 | 6 | Q | O Luz | 1 | 6 | 4 | | | | | | | | | |
| 5 | F Agamenone | 6 | 2 | 2 | | | | | | | | | | | SE | T Seyboth Wild | 6 | 6 |
| 4 | F Meligeni Alves | 1 | 5 | | | | | | | | | | | | | T Barrios Vera | 3 | 4 |
| | T Barrios Vera | 6 | 7 | | | T Barrios Vera | 2 | 6 | 7$^7$ | | | | | | | | | |
| | M Navone | 7 | 6 | | | M Navone | 6 | 4 | 6$^5$ | | | | | | | | | |
| | G Bueno | 5 | 2 | | | | | | | | T Barrios Vera | 7 | 6 | | | | | |
| Q | M Alves | 6$^5$ | 6 | 4 | | | | | | Q | Á López San Martín | 5 | 4 | | | | | |
| | JB Torres | 7$^7$ | 3 | 6 | | JB Torres | 6 | 4 | 2 | | | | | | | | | |
| Q | Á López San Martín | 6 | 5 | 6 | Q | Á López San Martín | 4 | 6 | 6 | | | | | | | | | |
| 7 | L Darderi | 2 | 7 | 1 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | F Díaz Acosta | 1 | 3$^r$ | | | | | | | | | | | | | | | |
| | TA Tirante | 6 | 4 | | | TA Tirante | 3 | 3 | | | | | | | | | | |
| Q | Wilson Leite | 1 | 4 | | | A Vavassori | 6 | 6 | | | | | | | | | | |
| | A Vavassori | 6 | 6 | | | | | | | | A Vavassori | 7$^7$ | 6 | | | | | |
| | H Casanova | 6 | 6 | | | | | | | 3 | C Ugo Carabelli | 6$^5$ | 4 | | | | | |
| | RA Burruchaga | 3 | 3 | | | H Casanova | 3 | 6 | 3 | | | | | | | | | |
| | GA Olivieri | 6 | 4 | 3 | 3 | C Ugo Carabelli | 6 | 4 | 6 | | | | | | | | | |
| 3 | C Ugo Carabelli | 1 | 6 | 6 | | | | | | | | | | | | A Vavassori | 6$^1$ | 2 |
| 8 | R Bonadio | 6 | 6 | | | | | | | | | | | | 2 | H Gaston | 7$^7$ | 6 |
| WC | Miguel Fernando Pereira | 4 | 1 | | 8 | R Bonadio | 6 | 5 | 6 | | | | | | | | | |
| | N Kicker | 1 | 0$^r$ | | Alt | P Martín Tiffon | 4 | 7 | 4 | | | | | | | | | |
| Alt | Pol Martín Tiffon | 6 | 3 | | | | | | | 8 | R Bonadio | 2 | 7 | 3 | | | | |
| | A Collarini | 4 | 5 | | | | | | | 2 | H Gaston | 6 | 5 | 6 | | | | |
| Q | F Gaio | 6 | 7 | | Q | F Gaio | 4 | 0$^r$ | | | | | | | | | | |
| WC | G Lama | 1 | 4 | | 2 | H Gaston | 6 | 0 | | | | | | | | | | |
| 2 | H Gaston | 6 | 6 | | | | | | | | | | | | | | | |