# 2017 Torneo Internacional Challenger León – Singles

Michael Berrer was the defending champion but chose not to defend his title.
Adrián Menéndez Maceiras won the title after defeating Roberto Quiroz 6–4, 3–6, 6–3 in the final.

## Seeds

* Víctor Estrella Burgos (quarterfinals)
* Ernesto Escobedo (second round)
* Vasek Pospisil (quarterfinals)
* Stefan Kozlov (second round)
* João Souza (second round)
* Tennys Sandgren (second round)
* Teymuraz Gabashvili (quarterfinals)
* Jason Jung (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 |
| Q | Roberto Quiroz | 6 | 6 | | | | | |
| | Rajeev Ram | 4 | 3 | | | | | |
| | Rajeev Ram | 4 | 3 | Q | Roberto Quiroz | 4 | 6 | 3 |
| | | | | Q | Adrián Menéndez Maceiras | 6 | 3 | 6 |
| Alt | Nicolás Jarry | 5 | 4 | Q | Adrián Menéndez Maceiras | 6 | 3 | 6 |
| Q | Adrián Menéndez Maceiras | 7 | 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 | V Estrella Burgos | 4 | 7$^7$ | 6 | | | | | | | | | | | | | |
| | D Novikov | 6 | 6$^1$ | 0 | 1 | V Estrella Burgos | 6 | 6 | | | | | | | | | |
| LL | L Broady | 6 | 6 | | LL | L Broady | 2 | 2 | | | | | | | | | |
| SE | D Shapovalov | 2 | 3 | | | | | | | 1 | V Estrella Burgos | 6$^4$ | 4 | | | | |
| | F Coria | 4 | 6 | 6 | | | | | | Q | R Quiroz | 7$^7$ | 6 | | | | |
| WC | T Hank | 6 | 4 | 4 | | F Coria | 5 | 1 | | | | | | | | | |
| Q | R Quiroz | 6 | 6 | | Q | R Quiroz | 7 | 6 | | | | | | | | | |
| 8 | J Jung | 1 | 2 | | | | | | | | | | | Q | R Quiroz | 6 | 6 |
| 4 | S Kozlov | 6 | 6 | | | | | | | | | | | | R Ram | 4 | 3 |
| Q | D Petrović | 4 | 2 | | 4 | S Kozlov | 1 | 6$^4$ | | | | | | | | | |
| | R Ram | 6 | 2 | 6 | | R Ram | 6 | 7$^7$ | | | | | | | | | |
| | A Sarkissian | 3 | 6 | 4 | | | | | | | R Ram | 7$^7$ | 6 | | | | |
| | M Arévalo | 6$^4$ | 2 | | | | | | | | M Bašić | 6$^2$ | 3 | | | | |
| | M Bašić | 7$^7$ | 6 | | | M Bašić | 6 | 3 | 7$^8$ | | | | | | | | |
| | I Sijsling | 4 | 4 | | 5 | J Souza | 2 | 6 | 6$^6$ | | | | | | | | |
| 5 | J Souza | 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 |
| 6 | T Sandgren | 2 | 7$^7$ | 6 | | | | | | | | | | | | | | |
| Alt | M McDonald | 6 | 6$^2$ | 3 | 6 | T Sandgren | 6 | 4 | 5 | | | | | | | | | |
| | M Safwat | 0 | 4 | | Alt | N Jarry | 2 | 6 | 7 | | | | | | | | | |
| Alt | N Jarry | 6 | 6 | | | | | | | Alt | N Jarry | 3 | 7 | 7$^7$ | | | | |
| Q | Y Hanfmann | 6 | 6 | | | | | | | 3 | V Pospisil | 6 | 5 | 6$^2$ | | | | |
| | J-P Smith | 2 | 2 | | Q | Y Hanfmann | 6$^2$ | 4 | | | | | | | | | | |
| | A Santillan | 3 | 6 | 6$^5$ | 3 | V Pospisil | 7$^7$ | 6 | | | | | | | | | | |
| 3 | V Pospisil | 6 | 3 | 7$^7$ | | | | | | | | | | | Alt | N Jarry | 5 | 4 |
| 7 | T Gabashvili | 6 | 6 | | | | | | | | | | | | Q | A Menéndez Maceiras | 7 | 6 |
| WC | S González | 2 | 4 | | 7 | T Gabashvili | 7$^7$ | 6 | | | | | | | | | | |
| | P Krstin | 4 | 4 | | | M Krueger | 6$^1$ | 4 | | | | | | | | | | |
| | M Krueger | 6 | 6 | | | | | | | 7 | T Gabashvili | 7$^7$ | 4 | 3 | | | | |
| WC | H Hach Verdugo | 6 | 4 | 5 | | | | | | Q | A Menéndez Maceiras | 6$^5$ | 6 | 6 | | | | |
| Q | A Menéndez Maceiras | 4 | 6 | 7 | Q | A Menéndez Maceiras | 1 | 6 | 6 | | | | | | | | | |
| WC | M Sánchez | 3 | 6 | 3 | 2 | E Escobedo | 6 | 3 | 3 | | | | | | | | | |
| 2 | E Escobedo | 6 | 3 | 6 | | | | | | | | | | | | | | |