| Singles | |
|---|---|
| 2019 L'Open 35 de Saint-Malo | |
| Champion |  Varvara Gracheva |
| Runner-up |  Marta Kostyuk |
| Final score | 6–3, 6–2 |
Liudmila Samsonova was the defending champion, but chose to participate in Osaka instead. [1]
Varvara Gracheva won the title, defeating Marta Kostyuk in the final, 6–3, 6–2.
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)| Semifinals | Final | ||||||||||||
| Marta Kostyuk | 6 | 6 | |||||||||||
| 5 | Verónica Cepede Royg | 4 | 2 | ||||||||||
| Marta Kostyuk | 3 | 2 | |||||||||||
| Varvara Gracheva | 6 | 6 | |||||||||||
| 3 | Natalia Vikhlyantseva | 3 | 2r | ||||||||||
| Varvara Gracheva | 6 | 5 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | P Parmentier | 5 | 4 | ||||||||||||||||||||||||
| WC | T Andrianjafitrimo | 7 | 6 | WC | T Andrianjafitrimo | 5 | 77 | 2 | |||||||||||||||||||
| WC |  M Zanevska | 7 | 6 | WC | M Zanevska | 7 | 63 | 6 | |||||||||||||||||||
| WC | A Ramé | 5 | 4 | WC | M Zanevska | 65 | 1 | ||||||||||||||||||||
| M Kostyuk | 6 | 6 | M Kostyuk | 77 | 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 | 65 | 6 | 6 | |||||||||||||||||||||
| Q | E Molinaro | 2 | 1 |  R Šramková | 77 | 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 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | 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 | 66 | 3 | N Vikhlyantseva | 6 | 6 | |||||||||||||||||||||
| 3 | N Vikhlyantseva | 6 | 78 | 3 | N Vikhlyantseva | 3 | 2r | ||||||||||||||||||||
| 6 | M Minella | 61 | 6 | 5 | V Gracheva | 6 | 5 | ||||||||||||||||||||
| Q | E Guerrero Álvarez | 77 | 3 | 7 | Q | E Guerrero Álvarez | 77 | 2 | 7 | ||||||||||||||||||
 T Mrdeža | 6 | 6 | T Mrdeža | 65 | 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 | ||||||||||||||||||||||||
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