# 2019 L'Open 35 de Saint-Malo – Singles

Liudmila Samsonova was the defending champion, but chose to participate in Osaka instead.
Varvara Gracheva won the title, defeating Marta Kostyuk in the final, 6–3, 6–2.

## Seeds

* Pauline Parmentier (first round)
* Aliona Bolsova (second round)
* Natalia Vikhlyantseva (semifinals, retired)
* Tamara Korpatsch (first round)
* Verónica Cepede Royg (semifinals)
* Mandy Minella (first round)
* Giulia Gatto-Monticone (second round)
* Allie Kiick (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 |
| | Marta Kostyuk | 6 | 6 | | | |
| 5 | Verónica Cepede Royg | 4 | 2 | | | |
| 5 | Verónica Cepede Royg | 4 | 2 | Marta Kostyuk | 3 | 2 |
| | | | | Varvara Gracheva | 6 | 6 |
| 3 | Natalia Vikhlyantseva | 3 | 2$^r$ | Varvara Gracheva | 6 | 6 |
| | Varvara Gracheva | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | P Parmentier | 5 | 4 | | | | | | | | | | | | | | |
| WC | T Andrianjafitrimo | 7 | 6 | | WC | T Andrianjafitrimo | 5 | 7$^7$ | 2 | | | | | | | | |
| WC | M Zanevska | 7 | 6 | | WC | M Zanevska | 7 | 6$^3$ | 6 | | | | | | | | |
| WC | A Ramé | 5 | 4 | | | | | | | WC | M Zanevska | 6$^5$ | 1 | | | | |
| | M Kostyuk | 6 | 6 | | | | | | | | M Kostyuk | 7$^7$ | 6 | | | | |
| Q | G Maristany | 3 | 1 | | | M Kostyuk | 6 | 6 | | | | | | | | | |
| Q | M Yerolymos | 6 | 6 | | Q | M Yerolymos | 1 | 4 | | | | | | | | | |
| 8 | A Kiick | 3 | 3 | | | | | | | | | | | | M Kostyuk | 6 | 6 |
| 4 | T Korpatsch | 5 | 3 | | | | | | | | | | | 5 | V Cepede Royg | 4 | 2 |
| | I Bara | 7 | 6 | | | I Bara | 6$^5$ | 6 | 6 | | | | | | | | |
| Q | E Molinaro | 2 | 1 | | | R Šramková | 7$^7$ | 1 | 4 | | | | | | | | |
| | R Šramková | 6 | 6 | | | | | | | | I Bara | 3 | 1 | | | | |
| | E Gorgodze | 7 | 4 | 0 | | | | | | 5 | V Cepede Royg | 6 | 6 | | | | |
| | C Bucșa | 5 | 6 | 6 | | C Bucșa | 4 | 5 | | | | | | | | | |
| WC | L Brouleau | 4 | 2 | | 5 | V Cepede Royg | 6 | 7 | | | | | | | | | |
| 5 | V Cepede Royg | 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 | G Gatto-Monticone | 3 | 7 | 7 | | | | | | | | | | | | | |
| | D Marcinkēviča | 6 | 5 | 5 | 7 | G Gatto-Monticone | 5 | 6 | 5 | | | | | | | | |
| Q | A Albié | 1 | 2 | | | J Ponchet | 7 | 2 | 7 | | | | | | | | |
| | J Ponchet | 6 | 6 | | | | | | | | J Ponchet | 4 | 4 | | | | |
| | A Hesse | 6 | 4 | 3 | | | | | | 3 | N Vikhlyantseva | 6 | 6 | | | | |
| | D Gálfi | 4 | 6 | 6 | | D Gálfi | 0 | 0 | | | | | | | | | |
| | M Di Giuseppe | 4 | 6$^6$ | | 3 | N Vikhlyantseva | 6 | 6 | | | | | | | | | |
| 3 | N Vikhlyantseva | 6 | 7$^8$ | | | | | | | | | | | 3 | N Vikhlyantseva | 3 | 2$^r$ |
| 6 | M Minella | 6$^1$ | 6 | 5 | | | | | | | | | | | V Gracheva | 6 | 5 |
| Q | E Guerrero Álvarez | 7$^7$ | 3 | 7 | Q | E Guerrero Álvarez | 7$^7$ | 2 | 7 | | | | | | | | |
| | T Mrdeža | 6 | 6 | | | T Mrdeža | 6$^5$ | 6 | 5 | | | | | | | | |
| Q | S Wagner | 2 | 4 | | | | | | | Q | E Guerrero Álvarez | 3 | 2 | | | | |
| Q | L Wargnier | 3 | 0 | | | | | | | | V Gracheva | 6 | 6 | | | | |
| | V Gracheva | 6 | 6 | | | V Gracheva | 6 | 6 | | | | | | | | | |
| Q | D Seguel | 3 | 2 | | 2 | A Bolsova | 3 | 1 | | | | | | | | | |
| 2 | A Bolsova | 6 | 6 | | | | | | | | | | | | | | |