# 2017 Challenger Ciudad de Guayaquil – Singles

Nicolás Kicker was the defending champion but lost in the quarterfinals to Facundo Bagnis.
Gerald Melzer won the title after defeating Bagnis 6–3, 6–1 in the final.

## Seeds

* Víctor Estrella Burgos (second round)
* Nicolás Kicker (quarterfinals)
* Roberto Carballés Baena (first round)
* Marco Cecchinato (first round)
* Carlos Berlocq (second round)
* Gastão Elias (semifinals)
* Gerald Melzer (champion)
* Casper Ruud (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 |
| Alt | Hugo Dellien | 0 | 4 | | | | |
| 7 | Gerald Melzer | 6 | 6 | | | | |
| 7 | Gerald Melzer | 6 | 6 | 7 | Gerald Melzer | 6 | 6 |
| | | | | | Facundo Bagnis | 3 | 1 |
| 6 | Gastão Elias | 5 | 4 | | Facundo Bagnis | 3 | 1 |
| | Facundo Bagnis | 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 | 3 | 6 | 6 | | | | | | | | | | | | | |
| WC | E Gómez | 6 | 1 | 4 | 1 | V Estrella Burgos | 4 | 2 | | | | | | | | | |
| Alt | J Souza | 3 | 6$^3$ | | | M Arévalo | 6 | 6 | | | | | | | | | |
| | M Arévalo | 6 | 7$^7$ | | | | | | | | M Arévalo | 6$^3$ | 6$^3$ | | | | |
| | A Balázs | 4 | 4 | | | | | | | Alt | H Dellien | 7$^7$ | 7$^7$ | | | | |
| Alt | H Dellien | 6 | 6 | | Alt | H Dellien | 6 | 6 | | | | | | | | | |
| | F Coria | 5 | 6$^6$ | | 5 | C Berlocq | 4 | 4 | | | | | | | | | |
| 5 | C Berlocq | 7 | 7$^8$ | | | | | | | | | | | Alt | H Dellien | 0 | 4 |
| 4 | M Cecchinato | 3 | 2 | | | | | | | | | | | 7 | G Melzer | 6 | 6 |
| | B Rola | 6 | 6 | | | B Rola | 2 | 7$^7$ | 6$^7$ | | | | | | | | |
| | R Olivo | 5 | 0$^r$ | | WC | R Quiroz | 6 | 6$^1$ | 7$^9$ | | | | | | | | |
| WC | R Quiroz | 7 | 3 | | | | | | | WC | R Quiroz | 1 | 4 | | | | |
| | A Collarini | 3 | 2$^r$ | | | | | | | 7 | G Melzer | 6 | 6 | | | | |
| Q | M Cuevas | 6 | 4 | | Q | M Cuevas | 6 | 2 | 2 | | | | | | | | |
| Q | JP Ficovich | 2 | 1 | | 7 | G Melzer | 3 | 6 | 6 | | | | | | | | |
| 7 | G Melzer | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | G Elias | 6 | 7$^7$ | | | | | | | | | | | | | | |
| | J Kovalík | 4 | 6$^5$ | | 6 | G Elias | 6 | 6$^6$ | 6 | | | | | | | | |
| | J Domingues | 3 | 6 | 6 | | J Domingues | 3 | 7$^8$ | 2 | | | | | | | | |
| | G Oliveira | 6 | 2 | 3 | | | | | | 6 | G Elias | 6 | 6 | | | | |
| Q | G Lama | 7 | 6 | | | | | | | | G Andreozzi | 3 | 3 | | | | |
| WC | JP Varillas | 5 | 3 | | Q | G Lama | 4 | 2 | | | | | | | | | |
| | G Andreozzi | 3 | 7 | 6 | | G Andreozzi | 6 | 6 | | | | | | | | | |
| 3 | R Carballés Baena | 6 | 5 | 2 | | | | | | | | | | 6 | G Elias | 5 | 4 |
| 8 | C Ruud | 6 | 6 | | | | | | | | | | | | F Bagnis | 7 | 6 |
| | M González | 4 | 4 | | 8 | C Ruud | 1 | 2 | | | | | | | | | |
| | F Bagnis | 7$^7$ | 2 | | | F Bagnis | 6 | 6 | | | | | | | | | |
| | DE Galán | 6$^3$ | 2$^r$ | | | | | | | | F Bagnis | 6 | 6 | | | | |
| | Í Cervantes | 6 | 4 | 0 | | | | | | 2 | N Kicker | 3 | 4 | | | | |
| WC | J Hernández-Fernández | 3 | 6 | 6 | WC | J Hernández-Fernández | 6$^6$ | 0 | | | | | | | | | |
| Q | D Kuzmanov | 4 | 4 | | 2 | N Kicker | 7$^8$ | 6 | | | | | | | | | |
| 2 | N Kicker | 6 | 6 | | | | | | | | | | | | | | |