# 2018 L'Open 35 de Saint-Malo – Singles

Polona Hercog was the defending champion, but chose not to participate.
Liudmila Samsonova won the title, defeating Katarina Zavatska in the final, 6–0, 6–2.

## Seeds

* Carina Witthöft (withdrew)
* Anhelina Kalinina (first round)
* Ysaline Bonaventure (first round, retired)
* Sabina Sharipova (withdrew)
* Laura Siegemund (first round)
* Irina Bara (semifinals)
* Irina Khromacheva (first round)
* Verónica Cepede Royg (semifinals)
* Kathinka von Deichmann (quarterfinals)
* Tereza Smitková (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 | Semifinals | Final | Final | Final | Final |
| | Katarina Zavatska | 6$^5$ | 7$^7$ | 6 | | | | |
| 8 | Verónica Cepede Royg | 7$^7$ | 6$^1$ | 3 | | | | |
| 8 | Verónica Cepede Royg | 7$^7$ | 6$^1$ | 3 | | Katarina Zavatska | 0 | 2 |
| | | | | | Q | Liudmila Samsonova | 6 | 6 |
| Q | Liudmila Samsonova | 7$^7$ | 7 | | Q | Liudmila Samsonova | 6 | 6 |
| 6 | Irina Bara | 6$^4$ | 5 | | | | | |

### 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 |
| 9 | K von Deichmann | 6 | 6 | | | | | | | | | | | | | | | | |
| | D Seguel | 4 | 3 | | 9 | K von Deichmann | 6 | 6 | | | | | | | | | | | |
| | A Bolsova Zadoinov | 2 | 5 | | | J Paolini | 3 | 4 | | | | | | | | | | | |
| | J Paolini | 6 | 7 | | | | | | | 9 | K von Deichmann | 6$^5$ | 6 | 4 | | | | | |
| | S Reix | 1 | 5 | | | | | | | | K Zavatska | 7$^7$ | 2 | 6 | | | | | |
| | K Zavatska | 6 | 7 | | | K Zavatska | 2 | 6 | 6 | | | | | | | | | | |
| | J Čepelová | 5 | 6 | 6 | | J Čepelová | 6 | 2 | 4 | | | | | | | | | | |
| 7 | I Khromacheva | 7 | 1 | 2 | | | | | | | | | | | | K Zavatska | 6$^5$ | 7$^7$ | 6 |
| 10 | T Smitková | 5 | 2 | | | | | | | | | | | | 8 | V Cepede Royg | 7$^7$ | 6$^1$ | 3 |
| WC | T Bacsinszky | 7 | 6 | | WC | T Bacsinszky | 6 | 6$^4$ | 6 | | | | | | | | | | |
| | T Mrdeža | 6 | 6 | | | T Mrdeža | 0 | 7$^7$ | 3 | | | | | | | | | | |
| WC | C Burel | 2 | 4 | | | | | | | WC | T Bacsinszky | 6 | 3 | 3 | | | | | |
| | V Ivakhnenko | 1 | 6$^5$ | | | | | | | 8 | V Cepede Royg | 2 | 6 | 6 | | | | | |
| | M Trevisan | 6 | 7$^7$ | | | M Trevisan | 2 | 5 | | | | | | | | | | | |
| LL | M Benoît | 6$^4$ | 6$^4$ | | 8 | V Cepede Royg | 6 | 7 | | | | | | | | | | | |
| 8 | V Cepede Royg | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 5 | L Siegemund | 4 | 6 | 4 | | | | | | | | | | | | | | |
| | A Cadanțu | 6 | 4 | 6 | | A Cadanțu | 2 | 7 | 3 | | | | | | | | | |
| Q | M Témin | 6$^3$ | 4 | | Q | D Marcinkēviča | 6 | 5 | 6 | | | | | | | | | |
| Q | D Marcinkēviča | 7$^7$ | 6 | | | | | | | Q | D Marcinkēviča | 5 | 6 | 2 | | | | |
| Q | L Samsonova | 6 | 6 | | | | | | | Q | L Samsonova | 7 | 2 | 6 | | | | |
| WC | H Tan | 2 | 1 | | Q | L Samsonova | 6$^5$ | 6 | 6 | | | | | | | | | |
| | M Georges | 7$^7$ | 2 | | | M Georges | 7$^7$ | 4 | 3 | | | | | | | | | |
| 3 | Y Bonaventure | 6$^5$ | 1$^r$ | | | | | | | | | | | | Q | L Samsonova | 7$^7$ | 7 |
| 6 | I Bara | 6 | 6 | | | | | | | | | | | | 6 | I Bara | 6$^4$ | 5 |
| LL | M Yerolymos | 1 | 0 | | 6 | I Bara | 6 | 7 | | | | | | | | | | |
| | E Kostova | 6$^5$ | 4 | | | Ç Büyükakçay | 2 | 5 | | | | | | | | | | |
| | Ç Büyükakçay | 7$^7$ | 6 | | | | | | | 6 | I Bara | 3 | 6 | 6 | | | | |
| | E Gorgodze | 6 | 0 | 6 | | | | | | | E Gorgodze | 6 | 1 | 4 | | | | |
| WC | L Wargnier | 3 | 6 | 3 | | E Gorgodze | 6 | 6 | | | | | | | | | | |
| Q | MF Herazo | 6 | 7 | | Q | MF Herazo | 2 | 4 | | | | | | | | | | |
| 2 | A Kalinina | 4 | 5 | | | | | | | | | | | | | | | |