# 2011 Estoril Open – Women's singles

Anastasija Sevastova was the defending champion, but lost in the first round to Urszula Radwańska.
Anabel Medina Garrigues won in the final against Kristina Barrois, 6–1, 6–2.

## Seeds

* Alisa Kleybanova (quarterfinals)
* Jarmila Gajdošová (quarterfinals)
* Klára Zakopalová (quarterfinals)
* Anastasija Sevastova (first round)
* Bethanie Mattek-Sands (first round)
* Elena Vesnina (second round)
* Zheng Jie (first round)
* Gréta Arn (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 | Final | Final | Final |
| Kristina Barrois | 7 | 6 | | | |
| Johanna Larsson | 6$^2$ | 4 | | | |
| Johanna Larsson | 6$^2$ | 4 | Kristina Barrois | 1 | 2 |
| | | | Anabel Medina Garrigues | 6 | 6 |
| Anabel Medina Garrigues | 6 | 6 | Anabel Medina Garrigues | 6 | 6 |
| Monica Niculescu | 1 | 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 | Semifinals | Semifinals | Semifinals |
| 1 | A Kleybanova | 6 | 6 | | | | | | | | | | | | | |
| | O Govortsova | 2 | 2 | | 1 | A Kleybanova | 5 | 6 | 6 | | | | | | | |
| | K Pervak | 4 | 3 | | | M Johansson | 7 | 3 | 2 | | | | | | | |
| | M Johansson | 6 | 6 | | | | | | | 1 | A Kleybanova | 4 | 2 | | | |
| | S Arvidsson | 3 | 1 | | | | | | | | K Barrois | 6 | 6 | | | |
| | K Barrois | 6 | 6 | | | K Barrois | 6 | 6 | | | | | | | | |
| WC | B Luz | 1 | 1 | | 6 | E Vesnina | 4 | 3 | | | | | | | | |
| 6 | E Vesnina | 6 | 6 | | | | | | | | | | | K Barrois | 7 | 6 |
| 4 | A Sevastova | 7 | 6$^5$ | 1 | | | | | | | | | | J Larsson | 6$^2$ | 4 |
| PR | U Radwańska | 5 | 7 | 6 | PR | U Radwańska | 4 | 4 | | | | | | | | |
| WC | M de Lattre | 3 | 1 | | | J Larsson | 6 | 6 | | | | | | | | |
| | J Larsson | 6 | 6 | | | | | | | | J Larsson | 6 | 7 | | | |
| | A Rodionova | 6 | 6$^5$ | 4 | | | | | | | A Kudryavtseva | 2 | 5 | | | |
| | A Kudryavtseva | 1 | 7 | 6 | | A Kudryavtseva | 6 | 7 | | | | | | | | |
| | R Oprandi | 6 | 6 | | | R Oprandi | 4 | 6$^3$ | | | | | | | | |
| 7 | J Zheng | 4 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 8 | G Arn | 6 | 3 | 6 | | | | | | | | | | | | | |
| WC | MJ Köhler | 2 | 6 | 3 | 8 | G Arn | 2 | 0$^r$ | | | | | | | | | |
| | S Halep | 6$^5$ | 6$^5$ | | | A Medina Garrigues | 6 | 1 | | | | | | | | | |
| | A Medina Garrigues | 7 | 7 | | | | | | | | A Medina Garrigues | 6 | 7 | | | | |
| Q | T Paszek | 7 | 0$^r$ | | | | | | | 3 | K Zakopalová | 3 | 5 | | | | |
| Q | A Yakimova | 5 | 4 | | Q | A Yakimova | 6 | 4 | 1 | | | | | | | | |
| Q | B García Vidagany | 4 | 6$^3$ | | 3 | K Zakopalová | 2 | 6 | 6 | | | | | | | | |
| 3 | K Zakopalová | 6 | 7 | | | | | | | | | | | | A Medina Garrigues | 6 | 6 |
| 5 | B Mattek-Sands | 4 | 7 | 3 | | | | | | | | | | | M Niculescu | 1 | 3 |
| | M Niculescu | 6 | 5 | 6 | | M Niculescu | 6 | 6 | | | | | | | | | |
| Q | S Stephens | 6 | 6 | | Q | S Stephens | 4 | 4 | | | | | | | | | |
| | M Oudin | 2 | 1 | | | | | | | | M Niculescu | 5 | 6 | 6 | | | |
| | S Zhang | 2 | 1 | | | | | | | 2 | J Gajdošová | 7 | 4 | 2 | | | |
| PR | C Dellacqua | 6 | 6 | | PR | C Dellacqua | 2 | 4 | | | | | | | | | |
| | R Voráčová | 4 | 0 | | 2 | J Gajdošová | 6 | 6 | | | | | | | | | |
| 2 | J Gajdošová | 6 | 6 | | | | | | | | | | | | | | |