# 2012 Aberto de Tênis do Rio Grande do Sul – Singles

Simon Greul defeated Gastão Elias 2–6, 7–6$^{(7–5)}$, 7–5 in the final to win the title.

## Seeds

* Rubén Ramírez Hidalgo (semifinals)
* Andreas Haider-Maurer (first round)
* João Sousa (first round)
* Adrian Ungur (first round)
* Guido Pella (second round)
* Thiago Alves (quarterfinals)
* Thiemo de Bakker (second round)
* João Souza (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 | Semifinals | Final | Final | Final | Final |
| 1 | Rubén Ramírez Hidalgo | 6 | 1 | 2 | | | | |
| | Gastão Elias | 1 | 6 | 6 | | | | |
| | Gastão Elias | 1 | 6 | 6 | Gastão Elias | 6 | 6$^5$ | 5 |
| | | | | | Simon Greul | 2 | 7$^7$ | 7 |
| | Thomas Schoorel | 5 | 6 | 4 | Simon Greul | 2 | 7$^7$ | 7 |
| | Simon Greul | 7 | 2 | 6 | | | | |

### Top half

| 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 | Semifinals |
| 1 | R Ramírez Hidalgo | 6 | 6 | | | | | | | | | | | | | | | |
| | R Hocevar | 4 | 2 | 1 | R Ramírez Hidalgo | 6 | 4 | 7 | | | | | | | | | | |
| WC | Gabriel Friedrich | 4 | 2 | WC | M Demoliner | 4 | 6 | 5 | | | | | | | | | | |
| WC | M Demoliner | 6 | 6 | | | | | | 1 | R Ramírez Hidalgo | 4 | 7 | 6 | | | | | |
| | C Salamanca | 6$^{12}$ | 3 | | | | | | 6 | T Alves | 6 | 5 | 4 | | | | | |
| Q | A González | 7$^{14}$ | 6 | Q | A González | 6$^6$ | 6$^6$ | | | | | | | | | | | |
| | N Mektić | 3 | 5 | 6 | T Alves | 7$^8$ | 7$^8$ | | | | | | | | | | | |
| 6 | T Alves | 6 | 7 | | | | | | | | | | | 1 | R Ramírez Hidalgo | 6 | 1 | 2 |
| 3 | J Sousa | 4 | 3 | | | | | | | | | | | | G Elias | 1 | 6 | 6 |
| | W Odesnik | 6 | 6 | | W Odesnik | 6 | 6 | | | | | | | | | | | |
| PR | J Reister | 6 | 6 | PR | J Reister | 4 | 4 | | | | | | | | | | | |
| | F de Paula | 3 | 4 | | | | | | | W Odesnik | 4 | 5 | | | | | | |
| | G Elias | 6 | 6 | | | | | | | G Elias | 6 | 7 | | | | | | |
| Q | A De Greef | 2 | 1 | | G Elias | 7$^8$ | 2 | 6 | | | | | | | | | | |
| WC | F Neis | 2 | 4 | 7 | T de Bakker | 6$^6$ | 6 | 2 | | | | | | | | | | |
| 7 | T de Bakker | 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 |
| 8 | J Souza | 3 | 6 | 3 | | | | | | | | | | | | | |
| | B Pašanski | 6 | 3 | 6 | | B Pašanski | 2 | 4 | | | | | | | | | |
| | L Kirche | 7$^7$ | 6 | | | L Kirche | 6 | 6 | | | | | | | | | |
| Q | A Ghem | 6$^3$ | 4 | | | | | | | L Kirche | 4 | 7 | 3 | | | | |
| | T Schoorel | 6 | 1 | 6 | | | | | | T Schoorel | 6 | 5 | 6 | | | | |
| | P Červenák | 4 | 6 | 4 | | T Schoorel | 7$^7$ | 6 | | | | | | | | | |
| | G Clezar | 6 | 6 | | | G Clezar | 6$^3$ | 2 | | | | | | | | | |
| 4 | A Ungur | 4 | 2 | | | | | | | | | | | T Schoorel | 5 | 6 | 4 |
| 5 | G Pella | 6 | 6$^2$ | 7 | | | | | | | | | | S Greul | 7 | 2 | 6 |
| | P Sousa | 2 | 7$^7$ | 5 | 5 | G Pella | 5 | 1 | | | | | | | | | |
| | S Greul | 6 | 6 | | | S Greul | 7 | 6 | | | | | | | | | |
| | A Veić | 0 | 2 | | | | | | | S Greul | 6 | 6 | | | | | |
| WC | J Pereira | 6 | 5 | 4 | | | | | | J Silva | 2 | 3 | | | | | |
| Q | H Podlipnik | 4 | 7 | 6 | Q | H Podlipnik | 7$^7$ | 2 | 4 | | | | | | | | |
| | J Silva | 1 | 6 | 7$^7$ | | J Silva | 6$^4$ | 6 | 6 | | | | | | | | |
| 2 | A Haider-Maurer | 6 | 3 | 6$^1$ | | | | | | | | | | | | | |