# 2023 León Open – Singles

Blaž Rola was the defending champion but chose not to defend his title.
Giovanni Mpetshi Perricard won the title after defeating Juan Pablo Ficovich 6–7$^{(5–7)}$, 7–6$^{(8–6)}$, 7–6$^{(7–3)}$ in the final.

## Seeds

* James Duckworth (quarterfinals)
* Facundo Bagnis (second round)
* Antoine Bellier (quarterfinals)
* Renzo Olivo (second round)
* Antoine Escoffier (first round)
* Thiago Agustín Tirante (second round)
* Maximilian Neuchrist (semifinals)
* Juan Pablo Ficovich (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 |
| 8 | Juan Pablo Ficovich | 3 | 6 | 6 | | | | | |
| | Aziz Dougaz | 6 | 4 | 4 | | | | | |
| | Aziz Dougaz | 6 | 4 | 4 | 8 | Juan Pablo Ficovich | 7$^7$ | 6$^6$ | 6$^3$ |
| | | | | | Q | Giovanni Mpetshi Perricard | 6$^5$ | 7$^8$ | 7$^7$ |
| Q | Giovanni Mpetshi Perricard | 7$^7$ | 7$^7$ | | Q | Giovanni Mpetshi Perricard | 6$^5$ | 7$^8$ | 7$^7$ |
| 7 | Maximilian Neuchrist | 6$^5$ | 6$^4$ | | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | J Duckworth | 7$^7$ | 6 | | | | | | | | | | | | | | | | |
| | S Mansouri | 6$^4$ | 2 | | 1 | J Duckworth | 6 | 6 | | | | | | | | | | | |
| Alt | D Yevseyev | 5 | 5 | | Q | B Lock | 3 | 4 | | | | | | | | | | | |
| Q | B Lock | 7 | 7 | | | | | | | 1 | J Duckworth | 6$^3$ | 6 | 3 | | | | | |
| WC | R Pacheco Méndez | 1 | 2 | | | | | | | 8 | JP Ficovich | 7$^7$ | 3 | 6 | | | | | |
| | T Atmane | 6 | 6 | | | T Atmane | 4 | 6 | 5 | | | | | | | | | | |
| Alt | V Sachko | 3 | 2 | | 8 | JP Ficovich | 6 | 4 | 7 | | | | | | | | | | |
| 8 | JP Ficovich | 6 | 6 | | | | | | | | | | | | 8 | JP Ficovich | 3 | 6 | 6 |
| 4 | R Olivo | 6 | 6 | | | | | | | | | | | | | A Dougaz | 6 | 4 | 4 |
| | F Mena | 2 | 1 | | 4 | R Olivo | 2 | 4 | | | | | | | | | | | |
| | A Dougaz | 6 | 6 | | | A Dougaz | 6 | 6 | | | | | | | | | | | |
| | RA Burruchaga | 3 | 4 | | | | | | | | A Dougaz | 6 | 3 | 6 | | | | | |
| | O Crawford | 6 | 3 | 6 | | | | | | | N Mejía | 4 | 6 | 3 | | | | | |
| | JL Reis da Silva | 3 | 6 | 3 | | O Crawford | 6$^6$ | 6$^4$ | | | | | | | | | | | |
| | N Mejía | 6 | 6$^3$ | 6 | | N Mejía | 7$^8$ | 7$^7$ | | | | | | | | | | | |
| 5 | A Escoffier | 1 | 7$^7$ | 3 | | | | | | | | | | | | | | | |

### 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 |
| 6 | TA Tirante | 2 | 7 | 6 | | | | | | | | | | | | | | |
| | A Galarneau | 6 | 5 | 2 | 6 | TA Tirante | 6 | 6$^2$ | 4 | | | | | | | | | |
| Q | N Chappell | 1 | 6 | 2 | Q | G Mpetshi Perricard | 4 | 7$^7$ | 6 | | | | | | | | | |
| Q | G Mpetshi Perricard | 6 | 4 | 6 | | | | | | Q | G Mpetshi Perricard | 6 | 3 | 6 | | | | |
| Q | A Walton | 6 | 6 | | | | | | | 3 | A Bellier | 1 | 6 | 3 | | | | |
| | AD Vallejo | 4 | 3 | | Q | A Walton | 6$^1$ | 6$^5$ | | | | | | | | | | |
| | F Comesaña | 6$^2$ | 6 | 4 | 3 | A Bellier | 7$^7$ | 7$^7$ | | | | | | | | | | |
| 3 | A Bellier | 7$^7$ | 3 | 6 | | | | | | | | | | | Q | G Mpetshi Perricard | 7$^7$ | 7$^7$ |
| 7 | M Neuchrist | 4 | 7$^7$ | 6 | | | | | | | | | | | 7 | M Neuchrist | 6$^5$ | 6$^4$ |
| Q | Christian Langmo | 6 | 6$^5$ | 4 | 7 | M Neuchrist | 6 | 6 | | | | | | | | | | |
| WC | AF Rubio Fierros | 3 | 2 | | | Y Bu | 4 | 3 | | | | | | | | | | |
| | Y Bu | 6 | 6 | | | | | | | 7 | M Neuchrist | 4 | 6 | 7$^7$ | | | | |
| | E Zhu | 3 | 4 | | | | | | | | E Ejupovic | 6 | 4 | 6$^4$ | | | | |
| | Elmar Ejupovic | 6 | 6 | | | E Ejupovic | 6 | 3 | 6 | | | | | | | | | |
| Q | J Jung | 6 | 3 | 2 | 2/WC | F Bagnis | 4 | 6 | 3 | | | | | | | | | |
| 2/WC | F Bagnis | 4 | 6 | 6 | | | | | | | | | | | | | | |