# 2021 Lima Challenger – Singles

Daniel Elahi Galán was the defending champion, but chose not to defend his title.
Hugo Dellien won the title after defeating Camilo Ugo Carabelli 6–3, 7–5 in the final.

## Seeds

* Francisco Cerúndolo (first round)
* Juan Manuel Cerúndolo (quarterfinals, retired)
* Daniel Altmaier (second round)
* Juan Pablo Varillas (second round)
* Hugo Dellien (champion)
* Renzo Olivo (quarterfinals)
* Juan Pablo Ficovich (first round)
* Camilo Ugo Carabelli (final)

## 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 |
| Q | Johan Nikles | 7$^7$ | 4 | 2 | | | | |
| 5 | Hugo Dellien | 6$^5$ | 6 | 6 | | | | |
| 5 | Hugo Dellien | 6$^5$ | 6 | 6 | 5 | Hugo Dellien | 6 | 7 |
| | | | | | 8 | Camilo Ugo Carabelli | 3 | 5 |
| PR | Gerald Melzer | 1 | 5 | | 8 | Camilo Ugo Carabelli | 3 | 5 |
| 8 | Camilo Ugo Carabelli | 6 | 7 | | | | | |

### 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 | Semifinals |
| 1 | F Cerúndolo | 2 | 4 | | | | | | | | | | | | | | | |
| | M Pucinelli de Almeida | 6 | 6 | | | M Pucinelli de Almeida | 6$^2$ | 4 | | | | | | | | | | |
| Q | J Nikles | 6 | 6 | | Q | J Nikles | 7$^7$ | 6 | | | | | | | | | | |
| | A Menéndez Maceiras | 4 | 2 | | | | | | | Q | J Nikles | 6 | 6 | | | | | |
| | GA Olivieri | 6 | 3 | 0$^r$ | | | | | | 6 | R Olivo | 3 | 1 | | | | | |
| | R Quiroz | 4 | 6 | 0 | | R Quiroz | 5 | 4 | | | | | | | | | | |
| | L Catarina | 4 | 4 | | 6 | R Olivo | 7 | 6 | | | | | | | | | | |
| 6 | R Olivo | 6 | 6 | | | | | | | | | | | Q | J Nikles | 7$^7$ | 4 | 2 |
| 3 | D Altmaier | 7$^7$ | 6$^3$ | 6 | | | | | | | | | | 5 | H Dellien | 6$^5$ | 6 | 6 |
| | G Andreozzi | 6$^5$ | 7$^7$ | 2 | 3 | D Altmaier | 6 | 2 | 4 | | | | | | | | | |
| | N Kicker | 6 | 2 | 6 | | N Kicker | 2 | 6 | 6 | | | | | | | | | |
| Q | C Gómez-Herrera | 4 | 6 | 4 | | | | | | | N Kicker | 5 | 2 | | | | | |
| Alt | N Álvarez | 3 | 7$^7$ | 3 | | | | | | 5 | H Dellien | 7 | 6 | | | | | |
| | F Mena | 6 | 6$^5$ | 6 | | F Mena | 4 | 4 | | | | | | | | | | |
| | N Hardt | 3 | 2 | | 5 | H Dellien | 6 | 6 | | | | | | | | | | |
| 5 | H Dellien | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | JP Ficovich | 3 | 6$^2$ | | | | | | | | | | | | | | |
| PR | G Melzer | 6 | 7$^7$ | | PR | G Melzer | 6 | 7$^7$ | | | | | | | | | |
| Alt | O Roca Batalla | 7 | 7$^7$ | | Alt | O Roca Batalla | 4 | 6$^5$ | | | | | | | | | |
| Q | N Barrientos | 5 | 6$^2$ | | | | | | PR | G Melzer | 6 | 3 | | | | | |
| Q | J Panta | 2 | 1 | | | | | | | E Esteve Lobato | 2 | 0$^r$ | | | | | |
| | Eduard Esteve Lobato | 6 | 6 | | | E Esteve Lobato | 6 | 7$^7$ | | | | | | | | | |
| | P Sakamoto | 1 | 0$^r$ | | 4 | JP Varillas | 3 | 6$^3$ | | | | | | | | | |
| 4 | JP Varillas | 6 | 0 | | | | | | | | | | | PR | G Melzer | 1 | 5 |
| 8 | C Ugo Carabelli | 6 | 6 | | | | | | | | | | | 8 | C Ugo Carabelli | 6 | 7 |
| | N Mejía | 3 | 0 | | 8 | C Ugo Carabelli | 7 | 6 | | | | | | | | | |
| | J Lenz | 6 | 6 | | | J Lenz | 5 | 3 | | | | | | | | | |
| WC | C Huertas del Pino | 3 | 3 | | | | | | 8 | C Ugo Carabelli | 3 | 6 | 2 | | | | |
| | TA Tirante | 3 | 6 | 1 | | | | | 2 | JM Cerúndolo | 6 | 4 | 0$^r$ | | | | |
| WC | G Lama | 6 | 3 | 6 | WC | G Lama | 1 | 6$^3$ | | | | | | | | | |
| WC | G Bueno | 1 | 3 | | 2 | JM Cerúndolo | 6 | 7$^7$ | | | | | | | | | |
| 2 | JM Cerúndolo | 6 | 6 | | | | | | | | | | | | | | |