# 2020 Challenger Ciudad de Guayaquil – Singles

Thiago Seyboth Wild was the defending champion but chose not to defend his title.
Francisco Cerúndolo won the title after defeating Andrej Martin 6–4, 3–6, 6–2 in the final.

## Seeds

* Federico Coria (first round)
* Roberto Carballés Baena (semifinals)
* Andrej Martin (final)
* Jaume Munar (quarterfinals)
* Pedro Sousa (quarterfinals)
* Juan Pablo Varillas (second round)
* Emilio Gómez (first round)
* Alejandro Tabilo (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 | Semifinals | Final | Final | Final | Final | Final |
| Q | Jesper de Jong | 3 | 6 | 3 | | | | | |
| 3 | Andrej Martin | 6 | 2 | 6 | | | | | |
| 3 | Andrej Martin | 6 | 2 | 6 | 3 | Andrej Martin | 4 | 6 | 2 |
| | | | | | | Francisco Cerúndolo | 6 | 3 | 6 |
| | Francisco Cerúndolo | 6 | 6 | | | Francisco Cerúndolo | 6 | 3 | 6 |
| 2 | Roberto Carballés Baena | 2 | 1 | | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | F Coria | 6$^7$ | 7$^7$ | 6$^8$ | | | | | | | | | | | | | |
| Q | O Roca Batalla | 7$^9$ | 6$^2$ | 7$^{10}$ | Q | O Roca Batalla | 6 | 6 | | | | | | | | | |
| WC | D Hidalgo | 3 | 6$^5$ | | WC | G Escobar | 4 | 3 | | | | | | | | | |
| WC | G Escobar | 6 | 7$^7$ | | | | | | Q | O Roca Batalla | 2 | 2 | | | | | |
| Q | J de Jong | 5 | 6 | 7 | | | | | Q | J de Jong | 6 | 6 | | | | | |
| | M Vilella Martínez | 7 | 3 | 5 | Q | J de Jong | 6 | 6 | | | | | | | | | |
| | J Menezes | 3 | 5 | | 8 | A Tabilo | 2 | 2 | | | | | | | | | |
| 8 | A Tabilo | 6 | 7 | | | | | | | | | | Q | J de Jong | 3 | 6 | 3 |
| 3 | A Martin | 6 | 7 | | | | | | | | | | 3 | A Martin | 6 | 2 | 6 |
| | R Ortega Olmedo | 4 | 5 | | 3 | A Martin | 6 | 6 | | | | | | | | | |
| | MT Barrios Vera | 6 | 6 | | | MT Barrios Vera | 4 | 1 | | | | | | | | | |
| Q | TA Tirante | 3 | 2 | | | | | | 3 | A Martin | 6 | 6 | | | | | |
| | S Báez | 7 | 7$^7$ | | | | | | | S Báez | 4 | 4 | | | | | |
| | R Quiroz | 5 | 6$^1$ | | | S Báez | 7$^7$ | 6 | | | | | | | | | |
| | F Mena | 3 | 7$^9$ | 6 | | F Mena | 6$^4$ | 2 | | | | | | | | | |
| 7 | E Gómez | 6 | 6$^7$ | 2 | | | | | | | | | | | | | |

### 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 | JP Varillas | 7 | 6 | | | | | | | | | | | | | | | |
| | F Meligeni Alves | 5 | 4 | | 6 | JP Varillas | 1 | 7$^{11}$ | 6$^2$ | | | | | | | | | |
| | F Cerúndolo | 6 | 6 | | | F Cerúndolo | 6 | 6$^9$ | 7$^7$ | | | | | | | | | |
| | P Sakamoto | 3 | 3 | | | | | | | | F Cerúndolo | 4 | 6 | 6 | | | | |
| WC | AC March | 6$^5$ | 4 | | | | | | | 4 | J Munar | 6 | 4 | 2 | | | | |
| | C Lindell | 7$^7$ | 6 | | | C Lindell | 0 | 6 | 4 | | | | | | | | | |
| | JP Ficovich | 7 | 4 | 2 | 4 | J Munar | 6 | 4 | 6 | | | | | | | | | |
| 4 | J Munar | 5 | 6 | 6 | | | | | | | | | | | | F Cerúndolo | 6 | 6 |
| 5 | P Sousa | 2 | 6 | 6 | | | | | | | | | | | 2 | R Carballés Baena | 2 | 1 |
| | TM Etcheverry | 6 | 4 | 4 | 5 | P Sousa | 1 | 6 | 6 | | | | | | | | | |
| | V Kopřiva | 6 | 6 | | | V Kopřiva | 6 | 3 | 4 | | | | | | | | | |
| | P Krstin | 1 | 4 | | | | | | | 5 | P Sousa | 4 | 2 | | | | | |
| | J Sels | 6 | 2 | 4 | | | | | | 2 | R Carballés Baena | 6 | 6 | | | | | |
| | R Olivo | 4 | 6 | 6 | | R Olivo | 4 | 4 | | | | | | | | | | |
| Q | H Casanova | 0$^r$ | | | 2 | R Carballés Baena | 6 | 6 | | | | | | | | | | |
| 2 | R Carballés Baena | 5 | | | | | | | | | | | | | | | | |