# 2023 Garden Open – Singles

Franco Agamenone was the defending champion but lost in the quarterfinals to Jesper de Jong.
Sumit Nagal won the title after defeating de Jong 6–3, 6–2 in the final.

## Seeds

* Fábián Marozsán (first round)
* Franco Agamenone (quarterfinals)
* Mattia Bellucci (first round)
* Francesco Maestrelli (first round)
* Jelle Sels (second round)
* Andrea Pellegrino (withdrew)
* Maximilian Neuchrist (first round)
* Joris De Loore (semifinals)

## 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 |
| 8 | Joris De Loore | 6 | 5 | 4 | | | | |
| Q | Sumit Nagal | 2 | 7 | 6 | | | | |
| Q | Sumit Nagal | 2 | 7 | 6 | Q | Sumit Nagal | 6 | 6 |
| | | | | | | Jesper de Jong | 3 | 2 |
| | Flavio Cobolli | 5 | 3 | | | Jesper de Jong | 3 | 2 |
| | Jesper de Jong | 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 Marozsán | 4 | 4 | | | | | | | | | | | | | | | | |
| Q | Alexander Weis | 6 | 6 | | Q | A Weis | 5 | 2 | | | | | | | | | | | |
| | A Ritschard | 7$^7$ | 7 | | | A Ritschard | 7 | 6 | | | | | | | | | | | |
| Alt | N Serdarušić | 6$^3$ | 5 | | | | | | | | A Ritschard | 7 | 1 | 4 | | | | | |
| | N Fatić | 0$^r$ | | | | | | | | 8 | J De Loore | 5 | 6 | 6 | | | | | |
| WC | Gabriele Piraino | 5 | | | WC | G Piraino | 7$^8$ | 1 | 4 | | | | | | | | | | |
| | M Geerts | 2 | 2 | | 8 | J De Loore | 6$^6$ | 6 | 6 | | | | | | | | | | |
| 8 | J De Loore | 6 | 6 | | | | | | | | | | | | 8 | J De Loore | 6 | 5 | 4 |
| 4 | F Maestrelli | 2 | 4 | | | | | | | | | | | | Q | S Nagal | 2 | 7 | 6 |
| Q | S Nagal | 6 | 6 | | Q | S Nagal | 6 | 6 | | | | | | | | | | | |
| | A Andreev | 0$^r$ | | | WC | F Tabacco | 3 | 0 | | | | | | | | | | | |
| WC | Fausto Tabacco | 3 | | | | | | | | Q | S Nagal | 7 | 6 | | | | | | |
| Alt | M Houkes | 4 | 6 | 6 | | | | | | Alt | M Houkes | 5 | 0 | | | | | | |
| Q | V Vacherot | 6 | 3 | 4 | Alt | M Houkes | 6 | 7$^7$ | | | | | | | | | | | |
| Alt | FC Jianu | 5 | 3 | | 5 | J Sels | 4 | 6$^5$ | | | | | | | | | | | |
| 5 | J Sels | 7 | 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 |
| LL | V Durasovic | 3 | 3 | | | | | | | | | | | | | |
| Q | F Forti | 6 | 6 | | Q | F Forti | 5 | 1 | | | | | | | | |
| | F Cobolli | 7$^{12}$ | 4 | 7$^7$ | | F Cobolli | 7 | 6 | | | | | | | | |
| | N Moreno de Alboran | 6$^{10}$ | 6 | 6$^1$ | | | | | | | F Cobolli | 7 | 7 | | | |
| WC | F Arnaboldi | 4 | 3 | | | | | | | | M Trungelliti | 5 | 5 | | | |
| | M Trungelliti | 6 | 6 | | | M Trungelliti | 2 | 6 | 6 | | | | | | | |
| Q | G Fonio | 6 | 6 | | Q | G Fonio | 6 | 1 | 2 | | | | | | | |
| 3 | M Bellucci | 3 | 4 | | | | | | | | | | | F Cobolli | 5 | 3 |
| 7 | M Neuchrist | 6$^4$ | 4 | | | | | | | | | | | J de Jong | 7 | 6 |
| | G Mager | 7$^7$ | 6 | | | G Mager | 0 | 3 | | | | | | | | |
| | J de Jong | 6 | 6 | | | J de Jong | 6 | 6 | | | | | | | | |
| | M Gengel | 3 | 2 | | | | | | | | J de Jong | 6 | 6 | | | |
| | O Roca Batalla | 6 | 6 | | | | | | | 2 | F Agamenone | 3 | 4 | | | |
| LL | Miguel Damas | 1 | 1 | | | O Roca Batalla | 5 | 3 | | | | | | | | |
| Q | S Caruso | 3 | 4 | | 2 | F Agamenone | 7 | 6 | | | | | | | | |
| 2 | F Agamenone | 6 | 6 | | | | | | | | | | | | | |