# 2024 Challenger de Santiago – Singles

Hugo Dellien was the defending champion but lost in the quarterfinals to Facundo Bagnis.
Juan Pablo Varillas won the title after defeating Bagnis 6–3, 6–2 in the final.

## Seeds

* Tomás Barrios Vera (first round)
* Juan Pablo Varillas (champion)
* Camilo Ugo Carabelli (quarterfinals)
* Facundo Bagnis (final)
* Román Andrés Burruchaga (first round)
* Juan Manuel Cerúndolo (second round)
* Hugo Dellien (quarterfinals)
* Genaro Alberto Olivieri (second 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 |
| | Gustavo Heide | 4 | 6$^1$ | | | | |
| 4 | Facundo Bagnis | 6 | 7$^7$ | | | | |
| 4 | Facundo Bagnis | 6 | 7$^7$ | 4 | Facundo Bagnis | 3 | 2 |
| | | | | 2 | Juan Pablo Varillas | 6 | 6 |
| | Liam Draxl | 3 | 2 | 2 | Juan Pablo Varillas | 6 | 6 |
| 2 | Juan Pablo Varillas | 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 | T Barrios Vera | 3 | 4 | | | | | | | | | | | | | | |
| | G Heide | 6 | 6 | | | G Heide | 7 | 6 | | | | | | | | | |
| | Edoardo Lavagno | 3 | 1 | | | A Collarini | 5 | 1 | | | | | | | | | |
| | A Collarini | 6 | 6 | | | | | | | | G Heide | 6 | 7$^7$ | | | | |
| Q | V Aboian | 6 | 6 | | | | | | | | G Mager | 2 | 6$^5$ | | | | |
| Alt | M Pucinelli de Almeida | 4 | 4 | | Q | V Aboian | 7 | 1 | 2 | | | | | | | | |
| | G Mager | 3 | 6 | 6 | | G Mager | 5 | 6 | 6 | | | | | | | | |
| 5 | RA Burruchaga | 6 | 3 | 3 | | | | | | | | | | | G Heide | 4 | 6$^1$ |
| 4 | F Bagnis | 6 | 7 | | | | | | | | | | | 4 | F Bagnis | 6 | 7$^7$ |
| Q | Gerard Campana Lee | 1 | 5 | | 4 | F Bagnis | 6 | 6 | | | | | | | | | |
| Q | GA Boitan | 6 | 6 | | Q | GA Boitan | 4 | 2 | | | | | | | | | |
| Q | M Kestelboim | 4 | 4 | | | | | | | 4 | F Bagnis | 6 | 7$^{10}$ | | | | |
| WC | J Fonseca | 6$^2$ | 6 | 4 | | | | | | 7 | H Dellien | 3 | 6$^8$ | | | | |
| Q | FA Gómez | 7$^7$ | 2 | 6 | Q | FA Gómez | 6 | 1 | 0 | | | | | | | | |
| | G Bueno | 4 | 6$^4$ | | 7 | H Dellien | 3 | 6 | 6 | | | | | | | | |
| 7 | H Dellien | 6 | 7$^7$ | | | | | | | | | | | | | | |

### 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 |
| 8 | GA Olivieri | 2 | 7 | 6 | | | | | | | | | | | | | | |
| | G Oliveira | 6 | 5 | 2 | 8 | GA Olivieri | 1 | 6 | 1 | | | | | | | | | |
| | L Draxl | 6$^7$ | 6 | 7$^7$ | | L Draxl | 6 | 4 | 6 | | | | | | | | | |
| | P Sekulic | 7$^9$ | 4 | 6$^2$ | | | | | | | L Draxl | 6 | 5 | 7 | | | | |
| | Alexander Weis | 6 | 4 | 2 | | | | | | 3 | C Ugo Carabelli | 4 | 7 | 5 | | | | |
| WC | I Buse | 4 | 6 | 6 | WC | I Buse | 6$^9$ | 4 | | | | | | | | | | |
| WC | M Soto | 6 | 4 | 3 | 3 | C Ugo Carabelli | 7$^{11}$ | 6 | | | | | | | | | | |
| 3 | C Ugo Carabelli | 4 | 6 | 6 | | | | | | | | | | | | L Draxl | 3 | 2 |
| 6 | JM Cerúndolo | 6 | 6 | | | | | | | | | | | | 2 | JP Varillas | 6 | 6 |
| | JL Reis da Silva | 1 | 0 | | 6 | JM Cerúndolo | 1 | 5 | | | | | | | | | | |
| | F Passaro | 6 | 6 | | | F Passaro | 6 | 7 | | | | | | | | | | |
| | M Dellien | 0 | 4 | | | | | | | | F Passaro | 5 | 6 | 6$^6$ | | | | |
| Q | O Luz | 6 | 2 | | | | | | | 2 | JP Varillas | 7 | 4 | 7$^8$ | | | | |
| | R Olivo | 3 | 1$^d$ | | Q | O Luz | 3 | 6 | 6$^3$ | | | | | | | | | |
| PR | P Jubb | 6 | 3 | 6$^6$ | 2 | JP Varillas | 6 | 2 | 7$^7$ | | | | | | | | | |
| 2 | JP Varillas | 3 | 6 | 7$^8$ | | | | | | | | | | | | | | |