# 2018 Engie Open Andrézieux-Bouthéon 42 – Singles

Anett Kontaveit was the defending champion, however she chose not to participate.
Georgina García Pérez won the title after defeating Arantxa Rus 6–2, 6–0 in the final.

## Seeds

* Pauline Parmentier (first round)
* Jana Čepelová (first round)
* Viktória Kužmová (first round)
* Arantxa Rus (final)
* Tereza Martincová (second round)
* Antonia Lottner (first round)
* Jasmine Paolini (first round)
* Magdalena Fręch (semifinals)

## 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 |
| WC | Fiona Ferro | 1 | 0 | | | | | |
| 4 | Arantxa Rus | 6 | 6 | | | | | |
| 4 | Arantxa Rus | 6 | 6 | | 4 | Arantxa Rus | 2 | 0 |
| | | | | | | Georgina García Pérez | 6 | 6 |
| 8 | Magdalena Fręch | 4 | 6 | 3 | | Georgina García Pérez | 6 | 6 |
| | Georgina García Pérez | 6 | 1 | 6 | | | | |

### 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/WC | P Parmentier | 6 | 6$^1$ | 2 | | | | | | | | | | | | | |
| | K von Deichmann | 3 | 7$^7$ | 6 | | K von Deichmann | 4 | 3 | | | | | | | | | |
| WC | F Ferro | 7$^7$ | 6 | | WC | F Ferro | 6 | 6 | | | | | | | | | |
| | Y Bonaventure | 6$^0$ | 2 | | | | | | WC | F Ferro | 7 | 4 | 6 | | | | |
| | B Schoofs | 4 | 6 | 6 | | | | | | B Schoofs | 5 | 6 | 4 | | | | |
| | M Hončová | 6 | 1 | 0 | | B Schoofs | 6 | 6 | | | | | | | | | |
| Q | C Bucșa | 5 | 6 | 1 | 5 | T Martincová | 3 | 2 | | | | | | | | | |
| 5 | T Martincová | 7 | 4 | 6 | | | | | | | | | | WC | F Ferro | 1 | 0 |
| 4 | A Rus | 6 | 6 | | | | | | | | | | | 4 | A Rus | 6 | 6 |
| | D Gálfi | 3 | 0 | | 4 | A Rus | 7$^7$ | 6 | | | | | | | | | |
| Q | M Arcangioli | 2 | 6 | 7$^7$ | Q | M Arcangioli | 6$^2$ | 2 | | | | | | | | | |
| | A Cadanțu | 6 | 3 | 6$^0$ | | | | | 4 | A Rus | 6 | 6 | | | | | |
| WC | S Cakarevic | 6 | 3 | 4 | | | | | | T Korpatsch | 2 | 4 | | | | | |
| | T Korpatsch | 2 | 6 | 6 | | T Korpatsch | 6 | 6 | | | | | | | | | |
| | G Brescia | 6 | 6 | | | G Brescia | 3 | 4 | | | | | | | | | |
| 7 | J Paolini | 3 | 4 | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 8 | M Fręch | 6 | 5 | 7$^7$ | | | | | | | | | | | | | | |
| | C Perrin | 2 | 7 | 6$^5$ | 8 | M Fręch | 6 | 6 | | | | | | | | | | |
| WC | C Paquet | 6 | 6 | | WC | C Paquet | 3 | 4 | | | | | | | | | | |
| | O Sáez Larra | 2 | 4 | | | | | | 8 | M Fręch | 6 | 2 | | | | | | |
| | D Chiesa | 6 | 3 | 4 | | | | | | V Diatchenko | 3 | 2$^r$ | | | | | | |
| | S Reix | 3 | 6 | 6 | | S Reix | 4 | 3 | | | | | | | | | | |
| | V Diatchenko | 6 | 3 | 6 | | V Diatchenko | 6 | 6 | | | | | | | | | | |
| 3 | V Kužmová | 2 | 6 | 3 | | | | | | | | | | 8 | M Fręch | 4 | 6 | 3 |
| 6 | A Lottner | 3 | 2 | | | | | | | | | | | | G García Pérez | 6 | 1 | 6 |
| Q | A Albié | 6 | 6 | | Q | A Albié | 6 | 6 | | | | | | | | | | |
| | A Sadiković | 6 | 1 | 3 | | T Smitková | 4 | 4 | | | | | | | | | | |
| | T Smitková | 3 | 6 | 6 | | | | | Q | A Albié | 3 | 7 | 6$^3$ | | | | | |
| Q | H Tan | 3 | 2 | | | | | | | G García Pérez | 6 | 5 | 7$^7$ | | | | | |
| | T Zidanšek | 6 | 6 | | | T Zidanšek | 2 | 3 | | | | | | | | | | |
| | G García Pérez | 6 | 7 | | | G García Pérez | 6 | 6 | | | | | | | | | | |
| 2 | J Čepelová | 3 | 5 | | | | | | | | | | | | | | | |