# 2023 Uruguay Open – Singles

Genaro Alberto Olivieri was the defending champion but chose not to defend his title.
Facundo Díaz Acosta won the title after Thiago Monteiro retired trailing 3–6, 3–4 in the final.

## Seeds

* Pedro Cachin (first round)
* Federico Coria (first round)
* Tomás Barrios Vera (quarterfinals)
* Facundo Díaz Acosta (champion)
* Alejandro Tabilo (first round)
* Hugo Dellien (semifinals)
* Thiago Agustín Tirante (first round)
* Francisco Comesaña (first round, retired)

## 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 |
| | Gustavo Heide | 6 | 3 | 5 | | | | |
| 4 | Facundo Díaz Acosta | 4 | 6 | 7 | | | | |
| 4 | Facundo Díaz Acosta | 4 | 6 | 7 | 4 | Facundo Díaz Acosta | 6 | 4 |
| | | | | | | Thiago Monteiro | 3 | 3$^r$ |
| 6 | Hugo Dellien | 6$^1$ | 6 | 3 | | Thiago Monteiro | 3 | 3$^r$ |
| | Thiago Monteiro | 7$^7$ | 1 | 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 | P Cachin | 4 | 3 | | | | | | | | | | | | | | | | |
| Q | M Houkes | 6 | 6 | | Q | M Houkes | 1 | 3 | | | | | | | | | | | |
| | G Heide | 6 | 7 | | | G Heide | 6 | 6 | | | | | | | | | | | |
| WC | I Carou | 3 | 5 | | | | | | | | G Heide | 7$^{11}$ | 3 | 6 | | | | | |
| | G Andreozzi | 3 | 2 | | | | | | | | F Bagnis | 6$^9$ | 6 | 3 | | | | | |
| | F Bagnis | 6 | 6 | | | F Bagnis | 6 | 6 | | | | | | | | | | | |
| | Edoardo Lavagno | 6 | 0 | | | E Lavagno | 1 | 2 | | | | | | | | | | | |
| 8 | F Comesaña | 1 | 0$^r$ | | | | | | | | | | | | | G Heide | 6 | 3 | 5 |
| 4 | F Díaz Acosta | 6 | 7 | | | | | | | | | | | | 4 | F Díaz Acosta | 4 | 6 | 7 |
| | A Giannessi | 1 | 5 | | 4 | F Díaz Acosta | 6 | 6 | | | | | | | | | | | |
| | F Agamenone | 4 | 1 | | Q | P Sakamoto | 1 | 2 | | | | | | | | | | | |
| Q | P Sakamoto | 6 | 6 | | | | | | | 4 | F Díaz Acosta | 4 | 6 | 6 | | | | | |
| Q | Á Guillén Meza | 7$^7$ | 6$^4$ | 6 | | | | | | | RA Burruchaga | 6 | 4 | 3 | | | | | |
| | L Darderi | 6$^4$ | 7$^7$ | 4 | Q | Á Guillén Meza | 6 | 4 | 3 | | | | | | | | | | |
| | RA Burruchaga | 6 | 1 | 6 | | RA Burruchaga | 4 | 6 | 6 | | | | | | | | | | |
| 7 | TA Tirante | 2 | 6 | 2 | | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 6 | H Dellien | 6 | 6 | | | | | | | | | | | | | | | | |
| | O Roca Batalla | 3 | 3 | | 6 | H Dellien | 5 | 6 | 6 | | | | | | | | | | |
| LL | R Olivo | 6 | 3 | 6 | LL | R Olivo | 7 | 3 | 4 | | | | | | | | | | |
| Q | O Luz | 4 | 6 | 4 | | | | | | 6 | H Dellien | 6 | 0 | 6 | | | | | |
| WC | F Roncadelli | 7 | 3 | 2 | | | | | | 3 | T Barrios Vera | 4 | 6 | 4 | | | | | |
| | A Collarini | 5 | 6 | 6 | | A Collarini | 3 | 2 | | | | | | | | | | | |
| WC | Joaquín Aguilar Cardozo | 4 | 1 | | 3 | T Barrios Vera | 6 | 6 | | | | | | | | | | | |
| 3 | T Barrios Vera | 6 | 6 | | | | | | | | | | | | 6 | H Dellien | 6$^1$ | 6 | 3 |
| 5 | A Tabilo | 3 | 4 | | | | | | | | | | | | | T Monteiro | 7$^7$ | 1 | 6 |
| Q | S Rodríguez Taverna | 6 | 6 | | Q | S Rodríguez Taverna | 5 | 3 | | | | | | | | | | | |
| Q | M Dellien | 0 | 4 | | | T Monteiro | 7 | 6 | | | | | | | | | | | |
| | T Monteiro | 6 | 6 | | | | | | | | T Monteiro | 6 | 4 | 6 | | | | | |
| | F Meligeni Alves | 6 | 4 | 4 | | | | | | | C Ugo Carabelli | 1 | 6 | 4 | | | | | |
| | E Ymer | 3 | 6 | 6 | | E Ymer | 2 | 7$^8$ | 1 | | | | | | | | | | |
| | C Ugo Carabelli | 7$^7$ | 6 | | | C Ugo Carabelli | 6 | 6$^6$ | 6 | | | | | | | | | | |
| 2 | F Coria | 6$^3$ | 0 | | | | | | | | | | | | | | | | |