# 2015 Engie Open de Biarritz – Singles

Kaia Kanepi was the defending champion, but lost in the first round to Amra Sadiković.
Laura Siegemund won the title, defeating Romina Oprandi in the final, 7–5, 6–3.

## Seeds

* Alexandra Dulgheru (second round)
* Teliana Pereira (semifinals)
* Kaia Kanepi (first round)
* Lourdes Domínguez Lino (second round)
* Klára Koukalová (semifinals)
* Laura Siegemund (champion)
* Romina Oprandi (final)
* Océane Dodin (second round)

## Main 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 |
| 6 | Laura Siegemund | 7 | 6 | | | | |
| 5 | Klára Koukalová | 5 | 4 | | | | |
| 5 | Klára Koukalová | 5 | 4 | 6 | Laura Siegemund | 7 | 6 |
| | | | | 7 | Romina Oprandi | 5 | 3 |
| 7 | Romina Oprandi | 6 | 6 | 7 | Romina Oprandi | 5 | 3 |
| 2 | Teliana Pereira | 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 Dulgheru | 6 | 7 | | | | | | | | | | | | | | |
| | S Vogt | 2 | 5 | | 1 | A Dulgheru | 3 | 2 | | | | | | | | | |
| | M Zanevska | 6 | 6 | | | M Zanevska | 6 | 6 | | | | | | | | | |
| | V Razzano | 3 | 3 | | | | | | | | M Zanevska | | | | | | |
| | I Khromacheva | 6 | 1 | | | | | | | 6 | L Siegemund | w/o | | | | | |
| WC | C Sibille | 1 | 0$^r$ | | | I Khromacheva | 6 | 2 | 3 | | | | | | | | |
| WC | J Suvrijn | 6$^6$ | 3 | | 6 | L Siegemund | 3 | 6 | 6 | | | | | | | | |
| 6 | L Siegemund | 7$^8$ | 6 | | | | | | | | | | | 6 | L Siegemund | 7 | 6 |
| 3 | K Kanepi | 6 | 3 | 6$^4$ | | | | | | | | | | 5 | K Koukalová | 5 | 4 |
| Q | A Sadiković | 4 | 6 | 7$^7$ | Q | A Sadiković | 0 | 0$^r$ | | | | | | | | | |
| | M Georges | 4 | 6 | 5 | | A Sevastova | 6 | 3 | | | | | | | | | |
| | A Sevastova | 6 | 2 | 7 | | | | | | | A Sevastova | 1 | 4 | | | | |
| | P Parmentier | 2 | 6 | 4 | | | | | | 5 | K Koukalová | 6 | 6 | | | | |
| LL | O Sáez Larra | 6 | 1 | 6 | LL | O Sáez Larra | 2 | 4 | | | | | | | | | |
| Q | B Eraydın | 2 | 4 | | 5 | K Koukalová | 6 | 6 | | | | | | | | | |
| 5 | K Koukalová | 6 | 6 | | | | | | | | | | | | | | |

### 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 | R Oprandi | 3 | 7$^7$ | 6 | | | | | | | | | | | | | |
| | R Peterson | 6 | 6$^4$ | 1 | 7 | R Oprandi | 6 | 6 | | | | | | | | | |
| | Y Bonaventure | 7 | 7$^9$ | | | Y Bonaventure | 2 | 3 | | | | | | | | | |
| LL | G Sanesi | 5 | 6$^7$ | | | | | | | 7 | R Oprandi | 6 | 6 | | | | |
| | S Foretz | 6 | 7$^7$ | | | | | | | | S Foretz | 2 | 1 | | | | |
| | N Kolar | 3 | 6$^2$ | | | S Foretz | 7$^7$ | 6 | | | | | | | | | |
| | S Soler Espinosa | 2 | 4 | | 4 | L Domínguez Lino | 6$^3$ | 4 | | | | | | | | | |
| 4 | L Domínguez Lino | 6 | 6 | | | | | | | | | | | 7 | R Oprandi | 6 | 6 |
| 8 | O Dodin | 6 | 6 | | | | | | | | | | | 2 | T Pereira | 3 | 2 |
| WC | H Tan | 1 | 1 | | 8 | O Dodin | 7 | 5 | 4 | | | | | | | | |
| | C Burger | 6 | 3 | 6 | | C Burger | 5 | 7 | 6 | | | | | | | | |
| Q | C Sánchez Quintanar | 2 | 6 | 3 | | | | | | | C Burger | 2 | 0 | | | | |
| Q | T Búa | 1 | 4 | | | | | | | 2 | T Pereira | 6 | 6 | | | | |
| | R-L Jani | 6 | 6 | | | R-L Jani | 6 | 4 | 4 | | | | | | | | |
| | N Vikhlyantseva | 7$^7$ | 1 | 1 | 2 | T Pereira | 3 | 6 | 6 | | | | | | | | |
| 2 | T Pereira | 6$^5$ | 6 | 6 | | | | | | | | | | | | | |