# 2024 San Luis Open Challenger – Men's singles

Tomás Barrios Vera was the defending champion but lost in the quarterfinals to Matías Soto.
Nicolás Mejía won the title after defeating Soto 6–1, 5–7, 6–2 in the final.

## Seeds

* Thiago Agustín Tirante (quarterfinals)
* James Duckworth (second round)
* Tomás Barrios Vera (quarterfinals)
* Valentin Vacherot (first round)
* Denis Kudla (semifinals)
* Giovanni Mpetshi Perricard (semifinals)
* Marc Polmans (first round)
* Oliver Crawford (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 | Final |
| Q | Nicolás Mejía | 6 | 6 | | | | | |
| 5 | Denis Kudla | 4 | 4 | | | | | |
| 5 | Denis Kudla | 4 | 4 | Q | Nicolás Mejía | 6 | 5 | 6 |
| | | | | Q | Matías Soto | 1 | 7 | 2 |
| Q | Matías Soto | 7$^{11}$ | 6 | Q | Matías Soto | 1 | 7 | 2 |
| 6 | Giovanni Mpetshi Perricard | 6$^9$ | 3 | | | | | |

### 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 | TA Tirante | 6 | 6 | | | | | | | | | | | | | | |
| Alt | Gerard Campana Lee | 4 | 4 | | 1 | TA Tirante | 7 | 6 | | | | | | | | | |
| | B Bicknell | 6 | 4 | 3 | | F Gaio | 5 | 1 | | | | | | | | | |
| | F Gaio | 3 | 6 | 6 | | | | | | 1 | TA Tirante | 3 | 4 | | | | |
| WC | E Escobedo | 7$^7$ | 5 | 1 | | | | | | Q | N Mejía | 6 | 6 | | | | |
| Q | N Mejía | 6$^3$ | 7 | 6 | Q | N Mejía | 6 | 6 | | | | | | | | | |
| Alt | Dominik Palán | 4 | 3 | | 8 | O Crawford | 3 | 0 | | | | | | | | | |
| 8 | O Crawford | 6 | 6 | | | | | | | | | | | Q | N Mejía | 6 | 6 |
| 4 | V Vacherot | 2 | 6 | 3 | | | | | | | | | | 5 | D Kudla | 4 | 4 |
| | B Tomic | 6 | 3 | 6 | | B Tomic | 6 | 1 | 6 | | | | | | | | |
| | M Krueger | 7$^7$ | 3 | 6$^6$ | | M-A Hüsler | 4 | 6 | 4 | | | | | | | | |
| | M-A Hüsler | 6$^3$ | 6 | 7$^8$ | | | | | | | B Tomic | 4 | 0$^r$ | | | | |
| | O Jasika | 4 | 2 | | | | | | | 5 | D Kudla | 6 | 3 | | | | |
| WC | V Pospisil | 6 | 6 | | WC | V Pospisil | 0 | 6$^3$ | | | | | | | | | |
| | JP Ficovich | 3 | 1 | | 5 | D Kudla | 6 | 7$^7$ | | | | | | | | | |
| 5 | D Kudla | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | M Polmans | 3 | 4 | | | | | | | | | | | | | | | |
| | M Dellien | 6 | 6 | | | M Dellien | 5 | 4 | | | | | | | | | | |
| Alt | B Lock | 6 | 2 | 3 | Q | M Soto | 7 | 6 | | | | | | | | | | |
| Q | M Soto | 3 | 6 | 6 | | | | | | Q | M Soto | 6 | 6 | | | | | |
| | A Mayo | 5 | 6 | 6 | | | | | | 3 | T Barrios Vera | 3 | 4 | | | | | |
| Q | Christian Langmo | 7 | 4 | 3 | | A Mayo | 5 | 6$^2$ | | | | | | | | | | |
| | T Schoolkate | 5 | 4 | | 3 | T Barrios Vera | 7 | 7$^7$ | | | | | | | | | | |
| 3 | T Barrios Vera | 7 | 6 | | | | | | | | | | | | Q | M Soto | 7$^{11}$ | 6 |
| 6 | G Mpetshi Perricard | 6$^4$ | 7$^7$ | 6 | | | | | | | | | | | 6 | G Mpetshi Perricard | 6$^9$ | 3 |
| Q | A Andrade | 7$^7$ | 6$^4$ | 3 | 6 | G Mpetshi Perricard | 6 | 6 | | | | | | | | | | |
| WC | R Pacheco Méndez | 6 | 3 | 2 | Q | R Cid Subervi | 4 | 4 | | | | | | | | | | |
| Q | R Cid Subervi | 4 | 6 | 6 | | | | | | 6 | G Mpetshi Perricard | 6 | 6$^4$ | 7 | | | | |
| | A Galarneau | 6 | 4 | 6 | | | | | | | A Galarneau | 4 | 7$^7$ | 5 | | | | |
| | A Bellier | 4 | 6 | 3 | | A Galarneau | 7$^7$ | 3 | 6 | | | | | | | | | |
| Q | B Zhukayev | 6$^4$ | 6$^4$ | | 2 | J Duckworth | 6$^1$ | 6 | 1 | | | | | | | | | |
| 2 | J Duckworth | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | | |