# 2024 Open Castilla y León – Singles

Pablo Llamas Ruiz was the defending champion but chose not to defend his title.
Antoine Escoffier won the title after defeating Àlex Martínez 6–3, 2–6, 6–3 in the final.

## Seeds

* Antoine Escoffier (champion)
* Jules Marie (first round)
* Alibek Kachmazov (second round)
* Egor Gerasimov (second round)
* Robin Bertrand (first round)
* Michael Geerts (second round)
* August Holmgren (first round)
* Vadym Ursu (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 | Final | Final | Final | Final | Final |
| 1 | Antoine Escoffier | 6 | 6 | | | | | |
| | Cui Jie | 4 | 4 | | | | | |
| | Cui Jie | 4 | 4 | 1 | Antoine Escoffier | 6 | 2 | 6 |
| | | | | Q | Àlex Martínez | 3 | 6 | 3 |
| WC | Nicolás Álvarez Varona | 4 | 3 | Q | Àlex Martínez | 3 | 6 | 3 |
| Q | Àlex Martínez | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Escoffier | 7$^7$ | 6 | | | | | | | | | | | | | | |
| | Iliyan Radulov | 6$^2$ | 1 | | 1 | A Escoffier | w/o | | | | | | | | | | |
| | A Barroso Campos | 5 | 5 | | | E Butvilas | | | | | | | | | | | |
| | E Butvilas | 7 | 7 | | | | | | | 1 | A Escoffier | 6 | 6 | | | | |
| | Alexis Gautier | 6 | 6$^2$ | 2 | | | | | | | B Lock | 2 | 2 | | | | |
| | Miguel Damas | 4 | 7$^7$ | 6 | | M Damas | 7$^7$ | 5 | 6$^5$ | | | | | | | | |
| | B Lock | 6 | 6 | | | B Lock | 6$^2$ | 7 | 7$^7$ | | | | | | | | |
| 8 | Vadym Ursu | 3 | 1 | | | | | | | | | | | 1 | A Escoffier | 6 | 6 |
| 3 | A Kachmazov | 3 | 7 | 6 | | | | | | | | | | | J Cui | 4 | 4 |
| Alt | I Montes de la Torre | 6 | 5 | 1 | 3 | A Kachmazov | 6 | 2 | 3 | | | | | | | | |
| Q | Max Wiskandt | 6 | 6 | | Q | M Wiskandt | 2 | 6 | 6 | | | | | | | | |
| | E Karlovskiy | 1 | 4 | | | | | | | Q | M Wiskandt | 4 | 5 | | | | |
| | D Mérida | 4 | 4 | | | | | | | | J Cui | 6 | 7 | | | | |
| | A Weber | 6 | 6 | | | A Weber | 4 | 6 | 6$^0$ | | | | | | | | |
| | J Cui | 7 | 6 | | | J Cui | 6 | 4 | 7$^7$ | | | | | | | | |
| 5 | R Bertrand | 5 | 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 |
| 6 | M Geerts | 6 | 7$^7$ | | | | | | | | | | | | | | | |
| | L Lokoli | 4 | 6$^4$ | | 6 | M Geerts | 3 | 6 | 3 | | | | | | | | | |
| Q | Adrià Soriano Barrera | 6$^5$ | 4 | | | D Added | 6 | 3 | 6 | | | | | | | | | |
| | D Added | 7$^7$ | 6 | | | | | | | | D Added | 3 | 3 | | | | | |
| WC | Alejo Sánchez Quílez | 1 | 1 | | | | | | | WC | N Álvarez Varona | 6 | 6 | | | | | |
| WC | N Álvarez Varona | 6 | 6 | | WC | N Álvarez Varona | 6 | 6$^7$ | 6 | | | | | | | | | |
| Q | Fabrizio Andaloro | 4 | 3 | | 4 | E Gerasimov | 4 | 7$^9$ | 3 | | | | | | | | | |
| 4 | E Gerasimov | 6 | 6 | | | | | | | | | | | | WC | N Álvarez Varona | 4 | 3 |
| 7 | A Holmgren | 5 | 4 | | | | | | | | | | | | Q | À Martínez | 6 | 6 |
| Q | John Echeverría | 7 | 6 | | Q | J Echeverría | 6 | 4 | 4 | | | | | | | | | |
| Q | Iván Marrero Curbelo | 6 | 6$^4$ | 3 | Q | À Martínez | 1 | 6 | 6 | | | | | | | | | |
| Q | Àlex Martínez | 3 | 7$^7$ | 6 | | | | | | Q | À Martínez | 6 | 2 | 6 | | | | |
| WC | Mario González Fernández | 6 | 6 | | | | | | | WC | M González Fernández | 3 | 6 | 3 | | | | |
| | Lorenzo Joaquín Rodríguez | 4 | 3 | | WC | M González Fernández | w/o | | | | | | | | | | | |
| | M Safwat | 7$^7$ | 6 | | | M Safwat | | | | | | | | | | | | |
| 2 | Jules Marie | 6$^2$ | 4 | | | | | | | | | | | | | | | |