# 2012 Uruguay Open – Singles

Carlos Berlocq was the defending champion but decided not to participate. Horacio Zeballos won the title, defeating Julian Reister 6–3, 6–2 in the final.

## Seeds

* João Sousa (second round)
* Andreas Haider-Maurer (first round)
* Guillaume Rufin (withdrew)
* Blaž Kavčič (second round)
* Guido Pella (first round)
* Adrian Ungur (semifinals)
* Horacio Zeballos (champion)
* Thiemo de Bakker (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 | Final | Final | Final | Final |
| PR | Julian Reister | 6 | 6 | | | | |
| | Agustín Velotti | 1 | 1 | | | | |
| | Agustín Velotti | 1 | 1 | PR | Julian Reister | 3 | 2 |
| | | | | 7 | Horacio Zeballos | 6 | 6 |
| 7 | Horacio Zeballos | 6 | 6 | 7 | Horacio Zeballos | 6 | 6 |
| 6 | Adrian Ungur | 1 | 3 | | | | |

### Top 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 |
| 1 | J Sousa | 7$^7$ | | | | | | | | | | | | | | | |
| Q | D Junqueira | 6$^1$ | r | | 1 | J Sousa | 6$^3$ | 1 | | | | | | | | | |
| | F Argüello | 4 | 2 | | PR | J Reister | 7$^7$ | 6 | | | | | | | | | |
| PR | J Reister | 6 | 6 | | | | | | PR | J Reister | 6 | 6 | | | | | |
| WC | M Djokovic | 3 | 7 | 6$^6$ | | | | | WC | M González | 3 | 3 | | | | | |
| WC | M González | 6 | 5 | 7$^8$ | WC | M González | 7$^7$ | 6 | | | | | | | | | |
| | S Greul | 6 | 4 | 6 | | S Greul | 6$^2$ | 3 | | | | | | | | | |
| 5 | G Pella | 1 | 6 | 2 | | | | | | | | | | PR | J Reister | 6 | 6 |
| LL | A van der Duim | 1 | 1 | | | | | | | | | | | | A Velotti | 1 | 1 |
| | A Velotti | 6 | 6 | | | A Velotti | 6 | 6 | | | | | | | | | |
| Alt | B Westerhof | 0 | 1 | | SE | D Schwartzman | 1 | 2 | | | | | | | | | |
| SE | D Schwartzman | 6 | 6 | | | | | | | A Velotti | 6 | 1 | 7$^7$ | | | | |
| | G Andreozzi | 5 | 6 | 4 | | | | | | A Veić | 4 | 6 | 6$^2$ | | | | |
| Q | Arthur De Greef | 7 | 3 | 6 | Q | A De Greef | 3 | 2 | | | | | | | | | |
| | A Veić | 6 | 6 | | | A Veić | 6 | 6 | | | | | | | | | |
| 8 | T de Bakker | 2 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | H Zeballos | 6 | 4 | 6 | | | | | | | | | | | | | |
| | G Elias | 4 | 6 | 4 | 7 | H Zeballos | 7$^7$ | 6 | | | | | | | | | |
| | P Capdeville | 7 | 6 | | | P Capdeville | 6$^5$ | 3 | | | | | | | | | |
| Q | T Brkić | 5 | 3 | | | | | | | 7 | H Zeballos | 6 | 6 | | | | |
| | L Kirche | 6$^4$ | 4 | | | | | | | | B Pašanski | 3 | 3 | | | | |
| | B Pašanski | 7$^7$ | 6 | | | B Pašanski | 6 | 7 | | | | | | | | | |
| | F Bagnis | 6$^3$ | 2 | | 4 | B Kavčič | 3 | 5 | | | | | | | | | |
| 4 | B Kavčič | 7$^7$ | 6 | | | | | | | | | | | 7 | H Zeballos | 6 | 6 |
| 6 | A Ungur | 6 | 6 | | | | | | | | | | | 6 | A Ungur | 1 | 3 |
| | R Dutra da Silva | 3 | 2 | | 6 | A Ungur | 6 | 6 | | | | | | | | | |
| | P Červenák | 7 | 6 | | | P Červenák | 3 | 4 | | | | | | | | | |
| WC | A Behar | 5 | 1 | | | | | | | 6 | A Ungur | 6 | 6 | | | | |
| Q | S Robert | 6 | 7$^7$ | | | | | | | WC | M Felder | 2 | 3 | | | | |
| | G Clezar | 1 | 6$^5$ | | Q | S Robert | 6 | 3 | 2 | | | | | | | | |
| WC | M Felder | 1 | 6 | 6 | WC | M Felder | 2 | 6 | 6 | | | | | | | | |
| 2 | A Haider-Maurer | 6 | 4 | 2 | | | | | | | | | | | | | |