# 2011 Aberto Santa Catarina de Tenis – Singles

Marcos Daniel was the defending champion, but lost to Ricardo Hocevar 6–7$^{(3–7)}$, 1–6 in the first round. José Acasuso defeated Marcelo Demoliner 6–2, 6–2 in the final.

## Seeds

* Ricardo Mello (first round)
* Marcos Daniel (first round)
* João Souza (first round)
* Éric Prodon (quarterfinals)
* Diego Junqueira (semifinals)
* Leonardo Mayer (quarterfinals)
* Tatsuma Ito (first round)
* Giovanni Lapentti (second round, retired)

## 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 |
| | José Acasuso | 7 | 4 | 6 | | | | |
| 5 | Diego Junqueira | 6$^4$ | 6 | 0 | | | | |
| 5 | Diego Junqueira | 6$^4$ | 6 | 0 | | José Acasuso | 6 | 6 |
| | | | | | WC | Marcelo Demoliner | 2 | 2 |
| WC | Marcelo Demoliner | 6 | 6 | | WC | Marcelo Demoliner | 2 | 2 |
| Q | Aljaž Bedene | 2 | 3 | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | R Mello | 3 | 6 | 3 | | | | | | | | | | | | | | | |
| Q | M Alund | 6 | 4 | 6 | Q | M Alund | 3 | 4 | | | | | | | | | | | |
| | A Molteni | 1 | 3 | | | J Acasuso | 6 | 6 | | | | | | | | | | | |
| | J Acasuso | 6 | 6 | | | | | | | | J Acasuso | 6 | 6 | | | | | | |
| | S Decoud | 5 | 1 | | | | | | | 6 | L Mayer | 3 | 4 | | | | | | |
| | J Silva | 7 | 6 | | | J Silva | 7 | 4 | 3 | | | | | | | | | | |
| SE | T Fernandes | 4 | 2 | | 6 | L Mayer | 6$^4$ | 6 | 6 | | | | | | | | | | |
| 6 | L Mayer | 6 | 6 | | | | | | | | | | | | | J Acasuso | 7 | 4 | 6 |
| 4 | É Prodon | 2 | 6 | 6 | | | | | | | | | | | 5 | D Junqueira | 6$^4$ | 6 | 0 |
| | C Zampieri | 6 | 4 | 2 | 4 | É Prodon | 6 | 3 | 6 | | | | | | | | | | |
| | N Massú | 0 | 4 | | | P Galdón | 1 | 6 | 1 | | | | | | | | | | |
| | P Galdón | 6 | 6 | | | | | | | 4 | É Prodon | 3 | 6 | 6$^4$ | | | | | |
| Q | M Vassallo Argüello | 6 | 7 | | | | | | | 5 | D Junqueira | 6 | 4 | 7 | | | | | |
| Q | A Ghem | 0 | 5 | | Q | M Vassallo Argüello | 2 | 3 | | | | | | | | | | | |
| | T Alves | 3 | 1 | | 5 | D Junqueira | 6 | 6 | | | | | | | | | | | |
| 5 | D Junqueira | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | T Ito | 2 | 6 | 4 | | | | | | | | | | | | |
| WC | M Demoliner | 6 | 4 | 6 | WC | M Demoliner | 6 | 6 | | | | | | | | |
| | F Romboli | 6 | 6 | | | F Romboli | 1 | 3 | | | | | | | | |
| WC | Bruno Volkmann | 4 | 2 | | | | | | WC | M Demoliner | 6 | 6 | | | | |
| | R Ghedin | 7 | 6 | | | | | | | F Bagnis | 4 | 4 | | | | |
| | L Tavares | 5 | 0 | | | R Ghedin | 2 | 2 | | | | | | | | |
| | F Bagnis | 3 | 7 | 3 | | F Bagnis | 6 | 6 | | | | | | | | |
| 3 | J Souza | 6 | 5 | 1$^r$ | | | | | | | | | WC | M Demoliner | 6 | 6 |
| 8 | G Lapentti | 4 | 6 | 6 | | | | | | | | | Q | A Bedene | 2 | 3 |
| WC | Thales Turini | 6 | 3 | 1 | 8 | G Lapentti | 3 | 2$^r$ | | | | | | | | |
| Q | A Bedene | 6 | 6 | | Q | A Bedene | 6 | 4 | | | | | | | | |
| | JP Brzezicki | 4 | 4 | | | | | | Q | A Bedene | 6 | 6 | | | | |
| SE | J Martí | 6 | 6 | | | | | | SE | J Martí | 3 | 2 | | | | |
| WC | TM Monteiro | 4 | 1 | | SE | J Martí | 7 | 6 | | | | | | | | |
| | R Hocevar | 7 | 6 | | | R Hocevar | 5 | 2 | | | | | | | | |
| 2 | M Daniel | 6$^3$ | 1 | | | | | | | | | | | | | |