# 2021 L'Open 35 de Saint-Malo – Singles

Nadia Podoroska was the defending champion but chose not to participate.
Viktorija Golubic won the title, defeating Jasmine Paolini in the final, 6–1, 6–3.

## Seeds

* Alizé Cornet (first round)
* Rebecca Peterson (quarterfinals)
* Alison Van Uytvanck (first round)
* Tamara Zidanšek (second round)
* Viktorija Golubic (champion)
* Arantxa Rus (second round)
* Nina Stojanović (second round)
* Christina McHale (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 | Final |
| WC | Harmony Tan | 6$^4$ | 3 | | | | |
| 5 | Viktorija Golubic | 7$^7$ | 6 | | | | |
| 5 | Viktorija Golubic | 7$^7$ | 6 | 5 | Viktorija Golubic | 6 | 6 |
| | | | | | Jasmine Paolini | 1 | 3 |
| | Jasmine Paolini | 6 | 6 | | Jasmine Paolini | 1 | 3 |
| | Varvara Gracheva | 3 | 1 | | | | |

### 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 Cornet | 5 | 7$^{10}$ | 1 | | | | | | | | | | | | | |
| | O Dodin | 7 | 6$^8$ | 6 | | O Dodin | 7 | 5 | 5 | | | | | | | | |
| | A Bolsova | 6 | 6 | | | A Bolsova | 5 | 7 | 7 | | | | | | | | |
| | M Trevisan | 2 | 4 | | | | | | | | A Bolsova | 6$^3$ | 0 | | | | |
| WC | H Tan | 6 | 4 | 6 | | | | | | WC | H Tan | 7$^7$ | 6 | | | | |
| | Y Wang | 4 | 6 | 3 | WC | H Tan | 6 | 6 | | | | | | | | | |
| | M Gasparyan | 7$^7$ | 1 | 4 | 6 | A Rus | 4 | 2 | | | | | | | | | |
| 6 | A Rus | 6$^4$ | 6 | 6 | | | | | | | | | | WC | H Tan | 6$^4$ | 3 |
| 4 | T Zidanšek | 6$^1$ | 6 | 6 | | | | | | | | | | 5 | V Golubic | 7$^7$ | 6 |
| | T Martincová | 7$^7$ | 2 | 1 | 4 | T Zidanšek | 6$^3$ | 3 | | | | | | | | | |
| | A Sasnovich | 7 | 0 | 7 | | A Sasnovich | 7$^7$ | 6 | | | | | | | | | |
| Q | T Andrianjafitrimo | 5 | 6 | 5 | | | | | | | A Sasnovich | 1 | 0 | | | | |
| Q | L Stefani | 4 | 6 | 4 | | | | | | 5 | V Golubic | 6 | 6 | | | | |
| | G Minnen | 6 | 3 | 6 | | G Minnen | 4 | 6 | 6$^2$ | | | | | | | | |
| WC | C Burel | 2 | 6$^4$ | | 5 | V Golubic | 6 | 4 | 7$^7$ | | | | | | | | |
| 5 | V Golubic | 6 | 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 | Semifinals | Semifinals | Semifinals |
| 7 | N Stojanović | 6 | 1 | 6 | | | | | | | | | | | | |
| | S Vögele | 3 | 6 | 4 | 7 | N Stojanović | 6 | 2 | 1 | | | | | | | |
| WC | E Jacquemot | 5 | 7 | 2 | | J Paolini | 4 | 6 | 6 | | | | | | | |
| | J Paolini | 7 | 5 | 6 | | | | | | | J Paolini | 6 | 7 | | | |
| | K Kozlova | 6 | 6 | | | | | | | | AK Schmiedlová | 3 | 5 | | | |
| WC | D Parry | 2 | 3 | | | K Kozlova | 3 | 7 | 4 | | | | | | | |
| | AK Schmiedlová | 2 | 7 | 6 | | AK Schmiedlová | 6 | 5 | 6 | | | | | | | |
| 3 | A Van Uytvanck | 6 | 5 | 3 | | | | | | | | | | J Paolini | 6 | 6 |
| 8 | C McHale | 4 | 6 | 2 | | | | | | | | | | V Gracheva | 3 | 1 |
| Q | V Tomova | 6 | 2 | 6 | Q | V Tomova | 4 | 5$^r$ | | | | | | | | |
| Q | C Tauson | 6 | 3 | 3 | | V Gracheva | 6 | 5 | | | | | | | | |
| | V Gracheva | 3 | 6 | 6 | | | | | | | V Gracheva | 6 | 6 | | | |
| LL | A Hesse | 0 | 6 | 2 | | | | | | 2 | R Peterson | 4 | 0 | | | |
| | A Kalinskaya | 6 | 4 | 6 | | A Kalinskaya | 6 | 4 | 0$^r$ | | | | | | | |
| | Xiy Wang | 6 | 4 | 5 | 2 | R Peterson | 4 | 6 | 4 | | | | | | | |
| 2 | R Peterson | 4 | 6 | 7 | | | | | | | | | | | | |

## Qualifying
### Seeds

* Clara Tauson (qualified)
* Viktoriya Tomova (qualified)
* Wang Xiyu (moved to main draw)
* Kateryna Kozlova (moved to main draw)
* Leonie Küng (first round)
* Kurumi Nara (first round)
* Tessah Andrianjafitrimo (qualified)
* Amandine Hesse (qualifying competition, lucky loser)

### Qualifiers

* Clara Tauson
* Viktoriya Tomova
* Luisa Stefani
* Tessah Andrianjafitrimo

### Lucky loser

* Amandine Hesse

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | 1 | Clara Tauson | 6 | 6 |
| | | | | 8 | Amandine Hesse | 2 | 4 |
| | Julia Wachaczyk | 4 | 1 | 8 | Amandine Hesse | 2 | 4 |
| 8 | Amandine Hesse | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | | 2 | Viktoriya Tomova | 4 | 7 | 6 |
| | | | | | | Vivian Heisen | 6 | 5 | 1 |
| | Vivian Heisen | 3 | 6 | 6 | | Vivian Heisen | 6 | 5 | 1 |
| 5 | Leonie Küng | 6 | 4 | 2 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition |
| | | | | | Bye |
| | | | | | Luisa Stefani |
| | Luisa Stefani | 6 | 1 | 6 | Luisa Stefani |
| 6 | Kurumi Nara | 1 | 6 | 4 | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | | | Emily Webley-Smith | 6 | 2 | 4 |
| | | | | | 7 | Tessah Andrianjafitrimo | 2 | 6 | 6 |
| | Yana Sizikova | 6 | 0 | 5 | 7 | Tessah Andrianjafitrimo | 2 | 6 | 6 |
| 7 | Tessah Andrianjafitrimo | 4 | 6 | 7 | | | | | |