# 2023 RD Open – Singles

Pedro Cachin was the defending champion but chose not to defend his title.
Genaro Alberto Olivieri won the title after defeating Marco Trungelliti 7–5, 2–6, 6–4 in the final.

## Seeds

* Federico Coria (semifinals)
* Alejandro Tabilo (quarterfinals)
* Thiago Agustín Tirante (second round)
* Flavio Cobolli (first round)
* Hugo Dellien (first round)
* Felipe Meligeni Alves (quarterfinals, retired)
* Genaro Alberto Olivieri (champion)
* Marco Trungelliti (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 | Semifinals | Final | Final | Final | Final | Final |
| 1 | Federico Coria | 4 | 6 | 5 | | | | | |
| 7 | Genaro Alberto Olivieri | 6 | 3 | 7 | | | | | |
| 7 | Genaro Alberto Olivieri | 6 | 3 | 7 | 7 | Genaro Alberto Olivieri | 7 | 2 | 6 |
| | | | | | 8 | Marco Trungelliti | 5 | 6 | 4 |
| | Francisco Comesaña | 5 | 3 | | 8 | Marco Trungelliti | 5 | 6 | 4 |
| 8 | Marco Trungelliti | 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 | Semifinals |
| 1 | F Coria | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | J Panta | 0 | 3 | | 1 | F Coria | 6 | 1 | 6 | | | | | | | | | | |
| | JP Ficovich | 6 | 0 | 6 | | JP Ficovich | 4 | 6 | 4 | | | | | | | | | | |
| PR | P Sakamoto | 4 | 6 | 2 | | | | | | 1 | F Coria | 6$^2$ | 6 | 6 | | | | | |
| | JL Reis da Silva | 6 | 6 | | | | | | | | B Tomic | 7$^7$ | 2 | 3 | | | | | |
| Q | J Roberts | 4 | 4 | | | JL Reis da Silva | 7 | 4 | 4 | | | | | | | | | | |
| | B Tomic | 6 | 6 | | | B Tomic | 5 | 6 | 6 | | | | | | | | | | |
| 5 | H Dellien | 3 | 2 | | | | | | | | | | | | 1 | F Coria | 4 | 6 | 5 |
| 4 | F Cobolli | 4 | 1 | | | | | | | | | | | | 7 | GA Olivieri | 6 | 3 | 7 |
| | M Dellien | 6 | 6 | | | M Dellien | 4 | 6 | 6 | | | | | | | | | | |
| Q | M Alves | 7 | 6 | | Q | M Alves | 6 | 3 | 4 | | | | | | | | | | |
| WC | R Cid Subervi | 5 | 3 | | | | | | | | M Dellien | 3 | 3 | | | | | | |
| Q | Ignacio Monzón | 6 | 6$^3$ | 6 | | | | | | 7 | GA Olivieri | 6 | 6 | | | | | | |
| | K Uchida | 4 | 7$^7$ | 4 | Q | I Monzón | 4 | 0 | | | | | | | | | | | |
| | M Pucinelli de Almeida | 2 | 6 | 2 | 7 | GA Olivieri | 6 | 6 | | | | | | | | | | | |
| 7 | GA Olivieri | 6 | 1 | 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 | F Meligeni Alves | 6 | 7$^{10}$ | | | | | | | | | | | | | | |
| | E Ribeiro | 4 | 6$^8$ | | 6 | F Meligeni Alves | 6 | 6 | | | | | | | | | |
| WC | P Bertran | 6 | 5 | 6 | WC | P Bertran | 1 | 3 | | | | | | | | | |
| | N Hardt | 3 | 7 | 2 | | | | | | 6 | F Meligeni Alves | 4 | 0$^r$ | | | | |
| | G Oliveira | 4 | 0 | | | | | | | | F Comesaña | 6 | 0 | | | | |
| | F Comesaña | 6 | 6 | | | F Comesaña | 6 | 6$^5$ | 7 | | | | | | | | |
| | G Heide | 6$^4$ | 4 | | 3 | TA Tirante | 1 | 7$^7$ | 5 | | | | | | | | |
| 3 | TA Tirante | 7$^7$ | 6 | | | | | | | | | | | | F Comesaña | 5 | 3 |
| 8 | M Trungelliti | 6 | 6 | | | | | | | | | | | 8 | M Trungelliti | 7 | 6 |
| | P Boscardin Dias | 4 | 1 | | 8 | M Trungelliti | 6 | 6 | | | | | | | | | |
| Q | Joshua Sheehy | 6$^6$ | 3 | | | G Bueno | 3 | 4 | | | | | | | | | |
| | G Bueno | 7$^8$ | 6 | | | | | | | 8 | M Trungelliti | 6 | 6 | | | | |
| | F Verdasco | 1 | 6 | 3 | | | | | | 2 | A Tabilo | 4 | 2 | | | | |
| WC | G Lama | 6 | 3 | 6 | WC | G Lama | 3 | 0 | | | | | | | | | |
| Q | Kyle Seelig | 5 | 3 | | 2 | A Tabilo | 6 | 6 | | | | | | | | | |
| 2 | A Tabilo | 7 | 6 | | | | | | | | | | | | | | |