# 2013 Aberto de Tênis do Rio Grande do Sul – Singles

Simon Greul was the defending champion, but chose not to compete.
Facundo Argüello won the title, defeating Máximo González in the final, 6–4, 6–1.

## Seeds

* Guido Pella (second round)
* Blaž Kavčič (first round)
* Thiemo de Bakker (first round)
* Martín Alund (second round)
* Rogério Dutra da Silva (second round)
* Gastão Elias (first round)
* João Souza (second round)
* Paul Capdeville (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 |
| Máximo González | 4 | 7 | 6 | | | |
| Guilherme Clezar | 6 | 5 | 4 | | | |
| Guilherme Clezar | 6 | 5 | 4 | Máximo González | 4 | 1 |
| | | | | Facundo Argüello | 6 | 6 |
| Facundo Argüello | 7 | 6 | | Facundo Argüello | 6 | 6 |
| Pedro Sousa | 5 | 1 | | | | |

### 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 | G Pella | 6 | 6 | | | | | | | | | | | | | | |
| | D Souto | 3 | 1 | | 1 | G Pella | 6 | 4 | 4 | | | | | | | | |
| | A Ghem | 6 | 6 | | | A Ghem | 3 | 6 | 6 | | | | | | | | |
| | V Estrella | 2 | 1 | | | | | | | A Ghem | 6 | 3 | 3 | | | | |
| WC | F Neis | 6 | 3 | 5 | | | | | | M González | 2 | 6 | 6 | | | | |
| | M González | 4 | 6 | 7 | | M González | 6 | 6 | | | | | | | | | |
| WC | M Demoliner | 3 | 4 | | 5 | R Dutra da Silva | 3 | 2 | | | | | | | | | |
| 5 | R Dutra da Silva | 6 | 6 | | | | | | | | | | | M González | 4 | 7 | 6 |
| 3 | T de Bakker | 4 | 5 | | | | | | | | | | | G Clezar | 6 | 5 | 4 |
| WC | T Monteiro | 6 | 7 | | WC | T Monteiro | 6 | 3 | 2 | | | | | | | | |
| | G Clezar | 6 | 7$^8$ | | | G Clezar | 1 | 6 | 6 | | | | | | | | |
| | F Bagnis | 2 | 6$^6$ | | | | | | | G Clezar | 6 | 6 | | | | | |
| | R Hocevar | 5 | 6 | 7$^7$ | | | | | | R Hocevar | 1 | 2 | | | | | |
| | A Velotti | 7 | 1 | 6$^2$ | | R Hocevar | 6 | 6 | | | | | | | | | |
| SE | B Fratangelo | 1 | 6 | 3 | 8 | P Capdeville | 2 | 1 | | | | | | | | | |
| 8 | P Capdeville | 6 | 4 | 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 |
| 7 | J Souza | 6 | 7$^7$ | | | | | | | | | | | | | | |
| | JC Campozano | 1 | 6$^1$ | | 7 | J Souza | 2 | 2 | | | | | | | | | |
| Q | A Collarini | 1 | 2 | | | G Andreozzi | 6 | 6 | | | | | | | | | |
| | G Andreozzi | 6 | 6 | | | | | | | | G Andreozzi | 4 | 3 | | | | |
| | F Argüello | 6 | 7 | | | | | | | | F Argüello | 6 | 6 | | | | |
| | P Heras | 2 | 5 | | | F Argüello | 4 | 6 | 6 | | | | | | | | |
| WC | E Dischinger | 1 | 6 | 5 | 4 | M Alund | 6 | 0 | 3 | | | | | | | | |
| 4 | M Alund | 6 | 4 | 7 | | | | | | | | | | | F Argüello | 7 | 6 |
| 6 | G Elias | 3 | 4 | | | | | | | | | | | | P Sousa | 5 | 1 |
| Q | G Quinzi | 6 | 6 | | Q | G Quinzi | 6 | 6 | | | | | | | | | |
| Q | C Gómez-Herrera | 2 | 3 | | | L Kirche | 2 | 2 | | | | | | | | | |
| | L Kirche | 6 | 3 | | | | | | | Q | G Quinzi | 6 | 0 | 6$^1$ | | | |
| Q | J Hernández | 1 | 6 | 6 | | | | | | | P Sousa | 3 | 6 | 7$^7$ | | | |
| PR | E Schwank | 6 | 4 | 3 | Q | J Hernández | 2 | 0 | | | | | | | | | |
| | P Sousa | 6 | 6 | | | P Sousa | 6 | 6 | | | | | | | | | |
| 2 | B Kavčič | 3 | 4 | | | | | | | | | | | | | | |