# 2012 São Léo Open – Singles

Leonardo Mayer was the defending champion but decided not to participate. Horacio Zeballos defeated Paul Capdeville 3–6, 7–5, 7–6$^{(7–2)}$ in the final.

## Seeds

* Andreas Haider-Maurer (second round)
* Blaž Kavčič (semifinals)
* Horacio Zeballos (champion)
* Rogério Dutra da Silva (quarterfinals)
* Gastão Elias (quarterfinals)
* João Souza (first round)
* Antonio Veić (second round)
* Paul Capdeville (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 | Final |
| 8 | Paul Capdeville | 6 | 6 | | | | | | |
| | Diego Schwartzman | 1 | 1 | | | | | | |
| | Diego Schwartzman | 1 | 1 | | 8 | Paul Capdeville | 6 | 5 | 6$^2$ |
| | | | | | 3 | Horacio Zeballos | 3 | 7 | 7$^7$ |
| 3 | Horacio Zeballos | 5 | 6 | 6 | 3 | Horacio Zeballos | 3 | 7 | 7$^7$ |
| 2 | Blaž Kavčič | 7 | 3 | 2 | | | | | |

### 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 | A Haider-Maurer | 6 | 6 | | | | | | | | | | | | | | |
| | M Felder | 3 | 2 | | 1 | A Haider-Maurer | 6 | 1 | 6$^1$ | | | | | | | | |
| | Enrico Becuzzi | 0 | 1 | | Q | T Brkić | 1 | 6 | 7$^7$ | | | | | | | | |
| Q | T Brkić | 6 | 6 | | | | | | | Q | T Brkić | 2 | 3 | | | | |
| WC | JP Sorgi | 7 | 6 | | | | | | | 8 | P Capdeville | 6 | 6 | | | | |
| | H Podlipnik | 5 | 1 | | WC | JP Sorgi | 3 | 6$^6$ | | | | | | | | | |
| | A Collarini | 2 | 3 | | 8 | P Capdeville | 6 | 7$^8$ | | | | | | | | | |
| 8 | P Capdeville | 6 | 6 | | | | | | | | | | | 8 | P Capdeville | 6 | 6 |
| 4 | R Dutra da Silva | 6$^6$ | 6 | 6 | | | | | | | | | | | D Schwartzman | 1 | 1 |
| Q | A Satschko | 7$^8$ | 0 | 3 | 4 | R Dutra da Silva | 5 | 7 | 6 | | | | | | | | |
| Q | Wilson Leite | 7 | 6 | | Q | W Leite | 7 | 5 | 4 | | | | | | | | |
| | A Ghem | 5 | 4 | | | | | | | 4 | R Dutra da Silva | 2 | 6$^2$ | | | | |
| | Leandro Migani | 2 | 1 | | | | | | | | D Schwartzman | 6 | 7$^7$ | | | | |
| | P Galdón | 6 | 6 | | | P Galdón | 1 | 1 | | | | | | | | | |
| | D Schwartzman | 7$^7$ | 6 | | | D Schwartzman | 6 | 6 | | | | | | | | | |
| 6 | J Souza | 6$^3$ | 3 | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 7 | A Veić | 6 | 6 | | | | | | | | | | | | | | | |
| WC | Gabriel Friedrich | 3 | 1 | | 7 | A Veić | 3 | 6$^7$ | | | | | | | | | | |
| | F de Paula | 7 | 6 | | | F de Paula | 6 | 7$^9$ | | | | | | | | | | |
| | J Pereira | 5 | 3 | | | | | | | | F de Paula | 1 | 2 | | | | | |
| | B Pašanski | 6 | 6 | | | | | | | 3 | H Zeballos | 6 | 6 | | | | | |
| | A Motti | 1 | 4 | | | B Pašanski | 4 | 7$^7$ | 0 | | | | | | | | | |
| Q | Diego Matos | 2 | 2 | | 3 | H Zeballos | 6 | 6$^5$ | 6 | | | | | | | | | |
| 3 | H Zeballos | 6 | 6 | | | | | | | | | | | 3 | H Zeballos | 5 | 6 | 6 |
| 5 | G Elias | 6 | 6 | | | | | | | | | | | 2 | B Kavčič | 7 | 3 | 2 |
| WC | Stefano Blatt | 1 | 0 | | 5 | G Elias | 6 | 6 | | | | | | | | | | |
| | G Andreozzi | 2 | 7 | 6$^2$ | | A Velotti | 1 | 1 | | | | | | | | | | |
| | A Velotti | 6 | 5 | 7$^7$ | | | | | | 5 | G Elias | 4 | 2 | | | | | |
| WC | F Neis | 5 | 3 | | | | | | | 2 | B Kavčič | 6 | 6 | | | | | |
| | G Clezar | 7 | 6 | | | G Clezar | 4 | 6 | 3 | | | | | | | | | |
| | J Silva | 4 | 6$^6$ | | 2 | B Kavčič | 6 | 3 | 6 | | | | | | | | | |
| 2 | B Kavčič | 6 | 7$^8$ | | | | | | | | | | | | | | | |