# 2018 Torneo Internacional Challenger León – Singles

Adrián Menéndez Maceiras was the defending champion but lost in the second round to John-Patrick Smith.
Christopher Eubanks won the title after defeating Smith 6–4, 3–6, 7–6$^{(7–4)}$ in the final.

## Seeds

* Adrián Menéndez Maceiras (second round)
* Mats Moraing (first round, retired)
* Dennis Novikov (second round)
* Víctor Estrella Burgos (first round)
* Kevin King (first round)
* Darian King (second round)
* Filip Peliwo (quarterfinals)
* Marcelo Arévalo (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 |
| | John-Patrick Smith | 6 | 6 | | | | | |
| | Alejandro González | 4 | 3 | | | | | |
| | Alejandro González | 4 | 3 | | John-Patrick Smith | 4 | 6 | 6$^4$ |
| | | | | | Christopher Eubanks | 6 | 3 | 7$^7$ |
| | Christopher Eubanks | 4 | 6 | 6 | Christopher Eubanks | 6 | 3 | 7$^7$ |
| Q | Roberto Quiroz | 6 | 4 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 1 | A Menéndez Maceiras | 7 | 7$^7$ | | | | | | | | | | | | | | |
| | A Šetkić | 5 | 6$^2$ | | 1 | A Menéndez Maceiras | 7$^{16}$ | 4 | 3 | | | | | | | | |
| | E Leshem | 6$^4$ | 0 | | | J-P Smith | 6$^{14}$ | 6 | 6 | | | | | | | | |
| | J-P Smith | 7$^7$ | 6 | | | | | | | | J-P Smith | 6 | 6 | | | | |
| Q | J Ward | 6 | 6 | | | | | | | 7 | F Peliwo | 1 | 4 | | | | |
| WC | José Antonio Rodríguez Rodríguez | 2 | 0 | | Q | J Ward | 2 | 4 | | | | | | | | | |
| WC | T Hank | 5 | 4 | | 7 | F Peliwo | 6 | 6 | | | | | | | | | |
| 7 | F Peliwo | 7 | 6 | | | | | | | | | | | | J-P Smith | 6 | 6 |
| 4 | V Estrella Burgos | 7$^7$ | 4 | 4 | | | | | | | | | | | A González | 4 | 3 |
| | DE Galán | 6$^5$ | 6 | 6 | | DE Galán | 2 | 6 | 4 | | | | | | | | |
| | A González | 6 | 6 | | | A González | 6 | 3 | 6 | | | | | | | | |
| | B Schnur | 4 | 4 | | | | | | | | A González | 3 | 6 | 6 | | | |
| | A Pavić | 6 | 6 | | | | | | | | A Pavić | 6 | 4 | 1 | | | |
| WC | L Patiño | 3 | 3 | | | A Pavić | 6 | 6 | | | | | | | | | |
| WC | M Sánchez | 4 | 6$^5$ | | 6 | D King | 4 | 2 | | | | | | | | | |
| 6 | D King | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | K King | 2 | 2 | | | | | | | | | | | | | | | |
| Q | R Cid Subervi | 6 | 6 | | Q | R Cid Subervi | 6 | 4 | 6 | | | | | | | | | |
| | U Humbert | 6 | 6 | | | U Humbert | 2 | 6 | 3 | | | | | | | | | |
| | P Krstin | 3 | 5$^r$ | | | | | | | Q | R Cid Subervi | 5 | 1 | | | | | |
| LL | Tobias Simon | 6$^6$ | 6$^4$ | | | | | | | | C Eubanks | 7 | 6 | | | | | |
| | C Eubanks | 7$^8$ | 7$^7$ | | | C Eubanks | 6 | 6 | | | | | | | | | | |
| | B Mousley | 3 | 7 | 4 | 3 | D Novikov | 3 | 3 | | | | | | | | | | |
| 3 | D Novikov | 6 | 5 | 6 | | | | | | | | | | | C Eubanks | 4 | 6 | 6 |
| 8 | M Arévalo | 5 | 6 | 2 | | | | | | | | | | Q | R Quiroz | 6 | 4 | 3 |
| Q | R Statham | 7 | 4 | 6 | Q | R Statham | 6 | 6$^5$ | 2 | | | | | | | | | |
| | C Gómez-Herrera | 4 | 5 | | Q | R Quiroz | 3 | 7$^7$ | 6 | | | | | | | | | |
| Q | R Quiroz | 6 | 7 | | | | | | | Q | R Quiroz | 6 | 7$^{12}$ | | | | | |
| | J Hernández-Fernández | 6 | 4 | 6 | | | | | | | A Sarkissian | 4 | 6$^{10}$ | | | | | |
| | D Petrović | 3 | 6 | 4 | | J Hernández-Fernández | 6$^2$ | 6$^4$ | | | | | | | | | | |
| | A Sarkissian | 5 | | | | A Sarkissian | 7$^7$ | 7$^7$ | | | | | | | | | | |
| 2 | M Moraing | 2$^r$ | | | | | | | | | | | | | | | | |