# 2023 Emilia-Romagna Open – Singles

Borna Ćorić was the defending champion but chose not to defend his title.
Alexandre Müller won the title after defeating Francesco Maestrelli 6–1, 6–4 in the final.

## Seeds

* Albert Ramos Viñolas (quarterfinals)
* Thiago Monteiro (quarterfinals)
* Alexandre Müller (champion)
* Jaume Munar (first round)
* Fábián Marozsán (withdrew)
* Giulio Zeppieri (semifinals)
* Francesco Passaro (first round)
* Jozef Kovalík (first round)

## 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 |
| 6 | Giulio Zeppieri | 4 | 7$^7$ | 6$^2$ | | | | |
| | Francesco Maestrelli | 6 | 6$^4$ | 7$^7$ | | | | |
| | Francesco Maestrelli | 6 | 6$^4$ | 7$^7$ | | Francesco Maestrelli | 1 | 4 |
| | | | | | 3 | Alexandre Müller | 6 | 6 |
| 3 | Alexandre Müller | 4 | 6 | 6 | 3 | Alexandre Müller | 6 | 6 |
| | Stefano Travaglia | 6 | 3 | 4 | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Ramos Viñolas | 6 | 6 | | | | | | | | | | | | | | | |
| Alt | F Verdasco | 2 | 3 | | 1 | A Ramos Viñolas | 6 | 3 | 6 | | | | | | | | | |
| | G Fonio | 6 | 6 | | | G Fonio | 1 | 6 | 3 | | | | | | | | | |
| Q | Filippo Moroni | 3 | 2 | | | | | | | 1 | A Ramos Viñolas | 5 | 3 | | | | | |
| | R Bonadio | 7$^7$ | 6 | | | | | | | 6 | G Zeppieri | 7 | 6 | | | | | |
| | L Darderi | 6$^3$ | 4 | | | R Bonadio | 2 | 5 | | | | | | | | | | |
| Q | B Bobrov | 4 | 3 | | 6 | G Zeppieri | 6 | 7 | | | | | | | | | | |
| 6 | G Zeppieri | 6 | 6 | | | | | | | | | | | 6 | G Zeppieri | 4 | 7$^7$ | 6$^2$ |
| 4 | J Munar | 5 | 3 | | | | | | | | | | | | F Maestrelli | 6 | 6$^4$ | 7$^7$ |
| | F Maestrelli | 7 | 6 | | | F Maestrelli | 7$^7$ | 6 | | | | | | | | | | |
| Q | S Napolitano | 4 | 6 | 6 | Q | S Napolitano | 6$^3$ | 3 | | | | | | | | | | |
| WC | P Cuevas | 6 | 3 | 1 | | | | | | | F Maestrelli | 6 | 6 | | | | | |
| | A Collarini | 6 | 6 | | | | | | | | A Collarini | 4 | 0 | | | | | |
| Q | D Popko | 4 | 3 | | | A Collarini | 7 | 6 | | | | | | | | | | |
| | S Caruso | 6 | 4 | 7 | | S Caruso | 5 | 4 | | | | | | | | | | |
| 7 | F Passaro | 4 | 6 | 5 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| LL | M Janvier | 4 | 6 | 1 | | | | | | | | | | | | | | |
| | A Giannessi | 6 | 4 | 6 | | A Giannessi | 6 | 6 | | | | | | | | | | |
| | A Andreev | 1 | 4 | | Alt | O Roca Batalla | 4 | 2 | | | | | | | | | | |
| Alt | O Roca Batalla | 6 | 6 | | | | | | | A Giannessi | 6 | 3 | 1 | | | | | |
| | F Gaio | 7$^7$ | 7$^7$ | | | | | | 3 | A Müller | 3 | 6 | 6 | | | | | |
| WC | F Forti | 6$^4$ | 6$^2$ | | | F Gaio | 5 | 2 | | | | | | | | | | |
| Q | Àlex Martí Pujolràs | 4 | 3 | | 3 | A Müller | 7 | 6 | | | | | | | | | | |
| 3 | A Müller | 6 | 6 | | | | | | | | | | | 3 | A Müller | 4 | 6 | 6 |
| 8 | J Kovalík | 4 | 6$^5$ | | | | | | | | | | | | S Travaglia | 6 | 3 | 4 |
| | M Gigante | 6 | 7$^7$ | | | M Gigante | 4 | 6$^2$ | | | | | | | | | | |
| Alt | Edoardo Lavagno | 2 | 0$^r$ | | | S Travaglia | 6 | 7$^7$ | | | | | | | | | | |
| | S Travaglia | 6 | 0 | | | | | | | S Travaglia | 6 | 7$^7$ | | | | | | |
| Q | B Rola | 6 | 1 | 6 | | | | | 2 | T Monteiro | 3 | 6$^5$ | | | | | | |
| WC | Alexander Weis | 3 | 6 | 3 | Q | B Rola | 4 | 2 | | | | | | | | | | |
| | A Pellegrino | 4 | 4 | | 2 | T Monteiro | 6 | 6 | | | | | | | | | | |
| 2 | T Monteiro | 6 | 6 | | | | | | | | | | | | | | | |