# 2019 Engie Open Nantes Atlantique – Singles

Timea Bacsinszky was the defending champion, but chose not to participate.
Cristina Bucșa won the title, defeating Tamara Korpatsch in the final, 6–2, 6–7$^{(11–13)}$, 7–6$^{(8–6)}$.

## Seeds

* Tatjana Maria (quarterfinals, retired)
* Varvara Gracheva (first round)
* Aliona Bolsova (first round)
* Vitalia Diatchenko (quarterfinals)
* Tamara Korpatsch (final)
* Ana Bogdan (semifinals)
* Chloé Paquet (first round)
* Ekaterine Gorgodze (second 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 | Final |
| | Cristina Bucșa | 6 | 6 | | | | | | |
| | Martina Caregaro | 2 | 1 | | | | | | |
| | Martina Caregaro | 2 | 1 | | | Cristina Bucșa | 6 | 6$^{11}$ | 7$^8$ |
| | | | | | 5 | Tamara Korpatsch | 2 | 7$^{13}$ | 6$^6$ |
| 6 | Ana Bogdan | 6 | 3 | 3 | 5 | Tamara Korpatsch | 2 | 7$^{13}$ | 6$^6$ |
| 5 | Tamara Korpatsch | 0 | 6 | 6 | | | | | |

### 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 |
| 1 | T Maria | 6 | 6 | | | | | | | | | | | | | | |
| Q | J Terziyska | 3 | 4 | | 1 | T Maria | 6 | 6$^2$ | 6 | | | | | | | | |
| | L Salden | 6 | 6 | | | L Salden | 3 | 7$^7$ | 1 | | | | | | | | |
| | O Sáez Larra | 2 | 2 | | | | | | | 1 | T Maria | 4 | 0$^r$ | | | | |
| Q | T Gravouil | 4 | 4 | | | | | | | | C Bucșa | 6 | 3 | | | | |
| | C Bucșa | 6 | 6 | | | C Bucșa | 6 | 6 | | | | | | | | | |
| WC | S Cakarevic | 6 | 4 | 5 | 8 | E Gorgodze | 4 | 2 | | | | | | | | | |
| 8 | E Gorgodze | 4 | 6 | 7 | | | | | | | | | | | C Bucșa | 6 | 6 |
| 3 | A Bolsova | 5 | 1 | | | | | | | | | | | | M Caregaro | 2 | 1 |
| | M Caregaro | 7 | 6 | | | M Caregaro | 6 | 6 | | | | | | | | | |
| | V Heisen | 6 | 6 | | | V Heisen | 0 | 2 | | | | | | | | | |
| Q | V Meliss | 4 | 4 | | | | | | | | M Caregaro | 7$^7$ | 5 | 7$^8$ | | | |
| | A Albié | 6 | 6 | | | | | | | | A Albié | 6$^5$ | 7 | 6$^6$ | | | |
| Q | L Cortez Llorca | 4 | 2 | | | A Albié | 6 | 6 | | | | | | | | | |
| Q | M Noël | 6 | 6 | | Q | M Noël | 3 | 1 | | | | | | | | | |
| 7 | C Paquet | 3 | 4 | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 6 | A Bogdan | 6$^1$ | 6 | 6 | | | | | | | | | | | | | | |
| | M Georges | 7$^7$ | 2 | 4 | 6 | A Bogdan | 7$^7$ | 3 | 6 | | | | | | | | | |
| LL | E Lechemia | 4 | 2 | | | O Dodin | 6$^3$ | 6 | 2 | | | | | | | | | |
| PR | O Dodin | 6 | 6 | | | | | | | 6 | A Bogdan | 7$^9$ | 6 | | | | | |
| Q | S Djoubri | 2 | 3 | | | | | | | 4 | V Diatchenko | 6$^7$ | 3 | | | | | |
| | J Malečková | 6 | 6 | | | J Malečková | 2 | 1 | | | | | | | | | | |
| | D Marcinkēviča | 2 | 2 | | 4 | V Diatchenko | 6 | 6 | | | | | | | | | | |
| 4 | V Diatchenko | 6 | 6 | | | | | | | | | | | 6 | A Bogdan | 6 | 3 | 3 |
| 5 | T Korpatsch | 6 | 6 | | | | | | | | | | | 5 | T Korpatsch | 0 | 6 | 6 |
| WC | A Tubello | 3 | 4 | | 5 | T Korpatsch | 6 | 6 | | | | | | | | | | |
| Q | M Armitano | 7$^9$ | 6$^6$ | 3 | Q | A Amanmuradova | 3 | 3 | | | | | | | | | | |
| Q | A Amanmuradova | 6$^7$ | 7$^8$ | 6 | | | | | | 5 | T Korpatsch | 6 | 6 | | | | | |
| | M Yerolymos | 4 | 5 | | | | | | | | A Hesse | 1 | 1 | | | | | |
| WC | I Ramialison | 6 | 7 | | WC | I Ramialison | 3 | 4 | | | | | | | | | | |
| | A Hesse | 6 | 7$^7$ | | | A Hesse | 6 | 6 | | | | | | | | | | |
| 2 | V Gracheva | 3 | 6$^4$ | | | | | | | | | | | | | | | |