# 2023 Challenger Coquimbo – Singles

Juan Manuel Cerúndolo was the defending champion but chose not to defend his title.
Matheus Pucinelli de Almeida won the title after defeating João Lucas Reis da Silva 7–6$^{(7–1)}$, 6–7$^{(4–7)}$, 6–4 in the final.

## Seeds

* Nick Hardt (quarterfinals)
* Thiago Seyboth Wild (semifinals)
* Santiago Rodríguez Taverna (quarterfinals)
* Francisco Comesaña (second round)
* Hernán Casanova (first round)
* Juan Bautista Torres (first round)
* Román Andrés Burruchaga (semifinals)
* João Lucas Reis da Silva (final)

## 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 | Final |
| 8 | João Lucas Reis da Silva | 6 | 6 | | | | | |
| 7 | Román Andrés Burruchaga | 2 | 4 | | | | | |
| 7 | Román Andrés Burruchaga | 2 | 4 | 8 | João Lucas Reis da Silva | 6$^1$ | 7$^7$ | 4 |
| | | | | | Matheus Pucinelli de Almeida | 7$^7$ | 6$^4$ | 6 |
| | Matheus Pucinelli de Almeida | 7$^{10}$ | 7 | | Matheus Pucinelli de Almeida | 7$^7$ | 6$^4$ | 6 |
| 2/WC | Thiago Seyboth Wild | 6$^8$ | 5 | | | | | |

### 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 |
| 1 | N Hardt | 6 | 6 | | | | | | | | | | | | | | | |
| | L Midón | 4 | 3 | | 1 | N Hardt | 7 | 6 | | | | | | | | | | |
| Q | Santiago de la Fuente | 2 | 3 | | | J Pereira | 5 | 2 | | | | | | | | | | |
| | J Pereira | 6 | 6 | | | | | | | 1 | N Hardt | 3 | 7$^7$ | 1 | | | | |
| | N Nakagawa | 6 | 5 | 3 | | | | | | 8 | JL Reis da Silva | 6 | 6$^5$ | 6 | | | | |
| | P Boscardin Dias | 4 | 7 | 6 | | P Boscardin Dias | 2 | 2 | | | | | | | | | | |
| | E Ribeiro | 2 | 3 | | 8 | JL Reis da Silva | 6 | 6 | | | | | | | | | | |
| 8 | JL Reis da Silva | 6 | 6 | | | | | | | | | | | | 8 | JL Reis da Silva | 6 | 6 |
| 3 | S Rodríguez Taverna | 6 | 6 | | | | | | | | | | | | 7 | RA Burruchaga | 2 | 4 |
| | V Aboian | 4 | 4 | | 3 | S Rodríguez Taverna | 6 | 3 | 6 | | | | | | | | | |
| Q | A Huertas del Pino | 6 | 6 | | Q | A Huertas del Pino | 4 | 6 | 4 | | | | | | | | | |
| WC | Nicolás Villalón | 4 | 1 | | | | | | | 3 | S Rodríguez Taverna | 5 | 1 | | | | | |
| | M Dellien | 6 | 6 | | | | | | | 7 | RA Burruchaga | 7 | 6 | | | | | |
| | G Villanueva | 3 | 4 | | | M Dellien | 2 | 2 | | | | | | | | | | |
| | Wilson Leite | 3 | 3 | | 7 | RA Burruchaga | 6 | 6 | | | | | | | | | | |
| 7 | RA Burruchaga | 6 | 6 | | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | JB Torres | 1 | 5 | | | | | | | | | | | | | | |
| | G Heide | 6 | 7 | | | G Heide | 5 | 3 | | | | | | | | | |
| | Facundo Juárez | 6 | 6 | | | F Juárez | 7 | 6 | | | | | | | | | |
| | J Panta | 0 | 2 | | | | | | | | F Juárez | 3 | 4 | | | | |
| | G Lama | 1 | 2 | | | | | | | | M Pucinelli de Almeida | 6 | 6 | | | | |
| | M Pucinelli de Almeida | 6 | 6 | | | M Pucinelli de Almeida | 6 | 7$^7$ | | | | | | | | | |
| Alt | Leonardo Aboian | 2 | 6 | 4 | 4 | F Comesaña | 2 | 6$^3$ | | | | | | | | | |
| 4 | F Comesaña | 6 | 4 | 6 | | | | | | | | | | | M Pucinelli de Almeida | 7$^{10}$ | 7 |
| 5 | H Casanova | 3 | 1 | | | | | | | | | | | 2/WC | T Seyboth Wild | 6$^8$ | 5 |
| Q | M Alves | 6 | 6 | | Q | M Alves | 6 | 3 | 6 | | | | | | | | |
| Q | C Huertas del Pino | 6 | 6 | | Q | C Huertas del Pino | 1 | 6 | 3 | | | | | | | | |
| WC | Daniel Antonio Núñez | 4 | 4 | | | | | | | Q | M Alves | 1 | 2 | | | | |
| Q | Alex Barrena | 6 | 7$^8$ | | | | | | | 2/WC | T Seyboth Wild | 6 | 6 | | | | |
| Q | Ignacio Monzón | 4 | 6$^6$ | | Q | A Barrena | 2 | 0 | | | | | | | | | |
| | D Dutra da Silva | 1 | 2 | | 2/WC | T Seyboth Wild | 6 | 6 | | | | | | | | | |
| 2/WC | T Seyboth Wild | 6 | 6 | | | | | | | | | | | | | | |