# 2018 Bucharest Open – Singles

Irina-Camelia Begu was the defending champion, but lost to Ons Jabeur in the first round.
Anastasija Sevastova won the title, defeating Petra Martić in the final, 7–6$^{(7–4)}$, 6–2.

## Seeds

* Anastasija Sevastova (champion)
* Mihaela Buzărnescu (semifinals)
* Irina-Camelia Begu (first round)
* Petra Martić (final)
* Sorana Cîrstea (quarterfinals)
* Ana Bogdan (first round)
* Pauline Parmentier (second round, retired)
* Polona Hercog (semifinals, retired)

## 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 |
| 1 | Anastasija Sevastova | 6 | 0 | | | | |
| 8 | Polona Hercog | 1 | 0$^r$ | | | | |
| 8 | Polona Hercog | 1 | 0$^r$ | 1 | Anastasija Sevastova | 7$^7$ | 6 |
| | | | | 4 | Petra Martić | 6$^4$ | 2 |
| 4 | Petra Martić | 6 | 6 | 4 | Petra Martić | 6$^4$ | 2 |
| 2 | Mihaela Buzărnescu | 4 | 4 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Sevastova | 4 | 6 | 7$^7$ | | | | | | | | | | | | | |
| | D Jakupović | 6 | 2 | 6$^1$ | 1 | A Sevastova | 6 | 7 | | | | | | | | | |
| | M Duque Mariño | 2 | 4 | | | A Rus | 1 | 5 | | | | | | | | | |
| | A Rus | 6 | 6 | | | | | | 1 | A Sevastova | 3 | 6 | 6 | | | | |
| | Y Bonaventure | 6$^5$ | 1 | | | | | | 5 | S Cîrstea | 6 | 3 | 2 | | | | |
| | M Zanevska | 7$^7$ | 6 | | | M Zanevska | 2 | 5 | | | | | | | | | |
| Q | Ç Büyükakçay | 3 | 3 | | 5 | S Cîrstea | 6 | 7 | | | | | | | | | |
| 5 | S Cîrstea | 6 | 6 | | | | | | | | | | | 1 | A Sevastova | 6 | 0 |
| 3 | I-C Begu | 2 | 1 | | | | | | | | | | | 8 | P Hercog | 1 | 0$^r$ |
| | O Jabeur | 6 | 6 | | | O Jabeur | 6 | 6 | | | | | | | | | |
| | V Zvonareva | 6 | 6 | | | V Zvonareva | 2 | 2 | | | | | | | | | |
| | E Alexandrova | 1 | 2 | | | | | | | O Jabeur | 3 | 1 | | | | | |
| | V Tomova | 4 | 5 | | | | | | 8 | P Hercog | 6 | 6 | | | | | |
| Q | I Bara | 6 | 7 | | Q | I Bara | 5 | 2 | | | | | | | | | |
| WC | E-G Ruse | 6 | 2 | 3 | 8 | P Hercog | 7 | 6 | | | | | | | | | |
| 8 | P Hercog | 2 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | A Bogdan | 6 | 6$^4$ | 5 | | | | | | | | | | | | | | |
| | AK Schmiedlová | 4 | 7$^7$ | 7 | | AK Schmiedlová | 4 | 6 | 2 | | | | | | | | | |
| PR | L Siegemund | 6 | 6 | | PR | L Siegemund | 6 | 3 | 6 | | | | | | | | | |
| | J Paolini | 4 | 0 | | | | | | | PR | L Siegemund | 5 | 6 | 4 | | | | |
| Q | C Liu | 4 | 6 | 6 | | | | | | 4 | P Martić | 7 | 4 | 6 | | | | |
| WC | A Roșca | 6 | 3 | 4 | Q | C Liu | 2 | 7$^7$ | 4 | | | | | | | | | |
| Q | R Šramková | 2 | 4 | | 4 | P Martić | 6 | 6$^5$ | 6 | | | | | | | | | |
| 4 | P Martić | 6 | 6 | | | | | | | | | | | | 4 | P Martić | 6 | 6 |
| 7 | P Parmentier | 2 | 6 | 6 | | | | | | | | | | | 2 | M Buzărnescu | 4 | 4 |
| | A Dulgheru | 6 | 1 | 4 | 7 | P Parmentier | 6$^0$ | 0$^r$ | | | | | | | | | | |
| WC | M Bulgaru | 1 | 3 | | | Y Wang | 7$^7$ | 3 | | | | | | | | | | |
| | Y Wang | 6 | 6 | | | | | | | | Y Wang | 6$^4$ | 3 | | | | | |
| | T Zidanšek | 7 | 6 | | | | | | | 2 | M Buzărnescu | 7$^7$ | 6 | | | | | |
| | R Peterson | 5 | 0 | | | T Zidanšek | 3 | 5 | | | | | | | | | | |
| | D Kovinić | 2 | 4 | | 2 | M Buzărnescu | 6 | 7 | | | | | | | | | | |
| 2 | M Buzărnescu | 6 | 6 | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Deborah Chiesa (first round)
* Irina Bara (qualified)
* Georgina García Pérez (qualifying competition)
* Paula Badosa Gibert (qualifying competition)
* Çağla Büyükakçay (qualified)
* Dejana Radanović (second round)
* Elena Rybakina (second round)
* Sesil Karatantcheva (first round)

### Qualifiers

* Rebecca Šramková
* Irina Bara
* Çağla Büyükakçay
* Claire Liu

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Deborah Chiesa | 2 | 1 | | | | | | | | |
| WC | Anna Bondár | 6 | 6 | | | | | | | | |
| WC | Anna Bondár | 6 | 6 | WC | Anna Bondár | 6 | 7$^7$ | | | | |
| | | | | | Jaqueline Cristian | 2 | 6$^4$ | | | | |
| | Cornelia Lister | 3 | 4 | | Jaqueline Cristian | 2 | 6$^4$ | | | | |
| | Jaqueline Cristian | 6 | 6 | | | | | | | | |
| | Jaqueline Cristian | 6 | 6 | | | | | WC | Anna Bondár | 6$^2$ | 4 |
| | | | | | | | | | Rebecca Šramková | 7$^7$ | 6 |
| | Rebecca Šramková | 7$^7$ | 6 | | | | | | | | | Rebecca Šramková | 7$^7$ | 6 |
| | Başak Eraydın | 6$^3$ | 3 | | | | | | | | |
| | Başak Eraydın | 6$^3$ | 3 | | Rebecca Šramková | 6 | 6 | | | | |
| | | | | 6 | Dejana Radanović | 1 | 1 | | | | |
| PR | Anne Schäfer | 2 | 5 | 6 | Dejana Radanović | 1 | 1 | | | | |
| 6 | Dejana Radanović | 6 | 7 | | | | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Irina Bara | 6 | 4 | 6 | | | | | | | | | | |
| | Anastasia Grymalska | 1 | 6 | 3 | | | | | | | | | | |
| | Anastasia Grymalska | 1 | 6 | 3 | 2 | Irina Bara | 6 | 6 | | | | | | |
| | | | | | | Katarina Zavatska | 2 | 2 | | | | | | |
| | Katarina Zavatska | 7$^7$ | 6 | | | Katarina Zavatska | 2 | 2 | | | | | | |
| | Polina Leykina | 6$^4$ | 2 | | | | | | | | | | | |
| | Polina Leykina | 6$^4$ | 2 | | | | | | | 2 | Irina Bara | 5 | 6 | 6 |
| | | | | | | | | | | | Alexandra Cadanțu | 7 | 2 | 2 |
| | Alexandra Cadanțu | 6 | 6 | | | | | | | | | | | | Alexandra Cadanțu | 7 | 2 | 2 |
| WC | Panna Udvardy | 0 | 0 | | | | | | | | | | | |
| WC | Panna Udvardy | 0 | 0 | | | Alexandra Cadanțu | 5 | 6 | 6 | | | | | |
| | | | | | 7 | Elena Rybakina | 7 | 2 | 2 | | | | | |
| | Marine Partaud | 3 | 6 | 3 | 7 | Elena Rybakina | 7 | 2 | 2 | | | | | |
| 7 | Elena Rybakina | 6 | 3 | 6 | | | | | | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Georgina García Pérez | 1 | 7 | 6 | | | | | | | | | |
| | Daniela Seguel | 6 | 5 | 0 | | | | | | | | | |
| | Daniela Seguel | 6 | 5 | 0 | 3 | Georgina García Pérez | 3 | 6 | 6 | | | | |
| | | | | | | Nicoleta Dascălu | 6 | 4 | 2 | | | | |
| | İpek Soylu | 3 | 6$^5$ | | | Nicoleta Dascălu | 6 | 4 | 2 | | | | |
| | Nicoleta Dascălu | 6 | 7$^7$ | | | | | | | | | | |
| | Nicoleta Dascălu | 6 | 7$^7$ | | | | | | | 3 | Georgina García Pérez | 3 | 6$^4$ |
| | | | | | | | | | | 5 | Çağla Büyükakçay | 6 | 7$^7$ |
| WC | Irina Fetecău | 3 | 4 | | | | | | | | | | | 5 | Çağla Büyükakçay | 6 | 7$^7$ |
| | Olga Ianchuk | 6 | 6 | | | | | | | | | | |
| | Olga Ianchuk | 6 | 6 | | | Olga Ianchuk | 5 | 7 | 2 | | | | |
| | | | | | 5 | Çağla Büyükakçay | 7 | 5 | 6 | | | | |
| | Réka Luca Jani | 4 | 4 | | 5 | Çağla Büyükakçay | 7 | 5 | 6 | | | | |
| 5 | Çağla Büyükakçay | 6 | 6 | | | | | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Paula Badosa Gibert | 6 | 6 | | | | | | | | | | |
| | Ulrikke Eikeri | 0 | 3 | | | | | | | | | | |
| | Ulrikke Eikeri | 0 | 3 | | 4 | Paula Badosa Gibert | 6 | 6 | | | | | |
| | | | | | | Chantal Škamlová | 0 | 1 | | | | | |
| | Cristina Dinu | 4 | 6$^2$ | | | Chantal Škamlová | 0 | 1 | | | | | |
| | Chantal Škamlová | 6 | 7$^7$ | | | | | | | | | | |
| | Chantal Škamlová | 6 | 7$^7$ | | | | | | 4 | Paula Badosa Gibert | 3 | 6 | 4 |
| | | | | | | | | | | Claire Liu | 6 | 4 | 6 |
| | Claire Liu | 6 | 3 | 6 | | | | | | | | | | Claire Liu | 6 | 4 | 6 |
| | Mari Osaka | 0 | 6 | 4 | | | | | | | | | |
| | Mari Osaka | 0 | 6 | 4 | | Claire Liu | 6 | 6 | | | | | |
| | | | | | WC | Andreea Prisăcariu | 3 | 1 | | | | | |
| WC | Andreea Prisăcariu | 6 | 6 | | WC | Andreea Prisăcariu | 3 | 1 | | | | | |
| 8 | Sesil Karatantcheva | 4 | 3 | | | | | | | | | | |