# 2023 Olbia Challenger – Singles

This was the first edition of the tournament.
Kyrian Jacquet won the title after defeating Flavio Cobolli 6–3, 6–4 in the final.

## Seeds

* Alexandre Müller (second round)
* Constant Lestienne (quarterfinals)
* Thiago Agustín Tirante (first round)
* Alex Molčan (semifinals)
* Pedro Martínez (second round)
* Corentin Moutet (first round)
* Flavio Cobolli (final)
* Benoît Paire (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 |
| Q | Kyrian Jacquet | 6 | 4 | 7$^7$ | | | | |
| SE | Joris De Loore | 4 | 6 | 6$^5$ | | | | |
| SE | Joris De Loore | 4 | 6 | 6$^5$ | Q | Kyrian Jacquet | 6 | 6 |
| | | | | | 7 | Flavio Cobolli | 3 | 4 |
| 4 | Alex Molčan | 4 | 1 | | 7 | Flavio Cobolli | 3 | 4 |
| 7 | Flavio Cobolli | 6 | 6 | | | | | |

### Top 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 |
| 1 | A Müller | 3 | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | |
| | F Fognini | 6 | 6$^5$ | 6$^3$ | 1 | A Müller | 6$^8$ | 4 | | | | | | | | | | |
| SE | U Blanchet | 7 | 6 | | SE | U Blanchet | 7$^{10}$ | 6 | | | | | | | | | | |
| | Z Kolář | 5 | 1 | | | | | | SE | U Blanchet | 0 | 6 | 2 | | | | | |
| Q | V Orlov | 7 | 3 | 4 | | | | | Q | K Jacquet | 6 | 4 | 6 | | | | | |
| Q | K Jacquet | 5 | 6 | 6 | Q | K Jacquet | 6 | 7$^7$ | | | | | | | | | | |
| WC | Lorenzo Carboni | 3 | 3 | | 5 | P Martínez | 3 | 6$^2$ | | | | | | | | | | |
| 5 | P Martínez | 6 | 6 | | | | | | | | | | | Q | K Jacquet | 6 | 4 | 7$^7$ |
| 3 | TA Tirante | 3 | 2 | | | | | | | | | | | SE | J De Loore | 4 | 6 | 6$^5$ |
| SE | J De Loore | 6 | 6 | | SE | J De Loore | 6 | 7$^8$ | | | | | | | | | | |
| WC | L Harris | 7$^7$ | 6 | | WC | L Harris | 3 | 6$^6$ | | | | | | | | | | |
| Alt | A Giannessi | 6$^3$ | 0 | | | | | | SE | J De Loore | 6 | 6 | | | | | | |
| Q | F Forti | 3 | 6 | 6 | | | | | Q | F Forti | 4 | 4 | | | | | | |
| | R Peniston | 6 | 4 | 4 | Q | F Forti | 6 | 6 | | | | | | | | | | |
| Q | M Bourgue | 7$^7$ | 1 | 6 | Q | M Bourgue | 4 | 1 | | | | | | | | | | |
| 6 | C Moutet | 6$^4$ | 6 | 1 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | B Paire | 4 | 6 | 2 | | | | | | | | | | | | |
| | M Bellucci | 6 | 3 | 6 | | M Bellucci | 6 | 6 | | | | | | | | |
| | R Brancaccio | 7 | 5 | 6 | | R Brancaccio | 4 | 4 | | | | | | | | |
| Q | R Bertola | 5 | 7 | 3 | | | | | | M Bellucci | 3 | 2 | | | | |
| WC | F Maestrelli | 3 | 4 | | | | | | 4 | A Molčan | 6 | 6 | | | | |
| Q | M Copil | 6 | 6 | | Q | M Copil | 2 | 2 | | | | | | | | |
| | D Kuzmanov | 6$^5$ | 0$^r$ | | 4 | A Molčan | 6 | 6 | | | | | | | | |
| 4 | A Molčan | 7$^7$ | 0 | | | | | | | | | | 4 | A Molčan | 4 | 1 |
| 7 | F Cobolli | 6 | 6$^7$ | 6 | | | | | | | | | 7 | F Cobolli | 6 | 6 |
| | Em Nava | 2 | 7$^9$ | 3 | 7 | F Cobolli | 6 | 6 | | | | | | | | |
| | F Gaio | 6 | 6 | | | F Gaio | 2 | 4 | | | | | | | | |
| | H Mayot | 2 | 0 | | | | | | 7 | F Cobolli | 7 | 7$^7$ | | | | |
| | M Gigante | 2 | 2 | | | | | | 2 | C Lestienne | 5 | 6$^4$ | | | | |
| | A Cazaux | 6 | 6 | | | A Cazaux | 2 | 4 | | | | | | | | |
| | D Rincón | 3 | 4 | | 2 | C Lestienne | 6 | 6 | | | | | | | | |
| 2 | C Lestienne | 6 | 6 | | | | | | | | | | | | | |