# 2006 Estoril Open – Women's singles

Lucie Šafářová was the defending champion, but did not compete this year.
Zheng Jie won the title with the score tied at 1 set all, after her opponent Li Na was forced to retire due to a heat illness. It was the first title of the year for Zheng and the second title in her career.

## Seeds

* Flavia Pennetta (semifinals)
* Gisela Dulko (quarterfinals)
* Lourdes Domínguez Lino (quarterfinals)
* Roberta Vinci (withdrew due to a right leg injury)
* Vera Dushevina (first round)
* Zheng Jie (champion)
* Émilie Loit (semifinals)
* Li Na (final, retired due to a heat illness)
* Virginie Razzano (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 | Final |
| 1 | Flavia Pennetta | 2 | 3 | | | | | |
| 6 | Zheng Jie | 6 | 6 | | | | | |
| 6 | Zheng Jie | 6 | 6 | 6 | Zheng Jie | 6$^5$ | 7 | 0 |
| | | | | 8 | Li Na | 7$^7$ | 5 | 0$^r$ |
| 7 | Émilie Loit | 5 | 2 | 8 | Li Na | 7$^7$ | 5 | 0$^r$ |
| 8 | Li Na | 7 | 6 | | | | | |

### 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 |
| 1 | F Pennetta | 6 | 2 | 7$^7$ | | | | | | | | | | | | | | |
| | E Vesnina | 2 | 6 | 6$^2$ | 1 | F Pennetta | 6 | 2 | 6 | | | | | | | | | |
| Q | S Uberoi | 6 | 4 | 3 | | M Ani | 4 | 6 | 2 | | | | | | | | | |
| | M Ani | 4 | 6 | 6 | | | | | | 1 | F Pennetta | 6 | 5 | 6 | | | | |
| | B Mattek | 5 | 4 | | | | | | | | E Daniilidou | 2 | 7 | 3 | | | | |
| | E Daniilidou | 7 | 6 | | | E Daniilidou | 7 | 7 | | | | | | | | | | |
| | M Díaz Oliva | 3 | 6 | 6 | | M Díaz Oliva | 5 | 5 | | | | | | | | | | |
| 9 | V Razzano | 6 | 4 | 4 | | | | | | | | | | | 1 | F Pennetta | 2 | 3 |
| 5 | V Dushevina | 4 | 4 | | | | | | | | | | | | 6 | J Zheng | 6 | 6 |
| | An Serra Zanetti | 6 | 6 | | | An Serra Zanetti | 2 | 1 | | | | | | | | | | |
| | Z Ondrášková | 6 | 6 | | | Z Ondrášková | 6 | 6 | | | | | | | | | | |
| | M Elena Camerin | 3 | 3 | | | | | | | | Z Ondrášková | 1 | 3 | | | | | |
| | L Pous Tió | 6 | 6 | | | | | | | 6 | J Zheng | 6 | 6 | | | | | |
| | M Vento-Kabchi | 0 | 0 | | | L Pous Tió | 2 | 6 | 3 | | | | | | | | | |
| LL | V Azarenka | 5 | 4 | | 6 | J Zheng | 6 | 2 | 6 | | | | | | | | | |
| 6 | J Zheng | 7 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | É Loit | 6 | 6 | | | | | | | | | | | | | | |
| WC | F Piedade | 1 | 2 | | 7 | É Loit | 6 | 6 | | | | | | | | | |
| | E Birnerová | 3 | 3 | | Q | N Gussoni | 2 | 2 | | | | | | | | | |
| Q | N Gussoni | 6 | 6 | | | | | | 7 | É Loit | 6 | 4 | 6 | | | | |
| | S Foretz | 4 | 1 | | | | | | 3 | L Domínguez Lino | 4 | 6 | 2 | | | | |
| | K Kanepi | 6 | 6 | | | K Kanepi | 1 | 4 | | | | | | | | | |
| WC | M de Lattre | 1 | 2 | | 3 | L Domínguez Lino | 6 | 6 | | | | | | | | | |
| 3 | L Domínguez Lino | 6 | 6 | | | | | | | | | | | 7 | É Loit | 5 | 2 |
| 8 | N Li | 6 | 6 | | | | | | | | | | | 8 | N Li | 7 | 6 |
| Q | K Barrois | 4 | 3 | | 8 | N Li | 6 | 6 | | | | | | | | | |
| Q | K Böhmová | 6 | 4 | 7 | Q | K Böhmová | 1 | 0 | | | | | | | | | |
| | A Parra Santonja | 2 | 6 | 5 | | | | | 8 | N Li | 6 | 6 | | | | | |
| | A Sánchez Lorenzo | 5 | 3 | | | | | | 2 | G Dulko | 3 | 1 | | | | | |
| WC | P Suárez | 7 | 6 | | WC | P Suárez | 2 | 1 | | | | | | | | | |
| | Z Yan | 4 | 4 | | 2 | G Dulko | 6 | 6 | | | | | | | | | |
| 2 | G Dulko | 6 | 6 | | | | | | | | | | | | | | |