# 2019 Thailand Open – Singles

Belinda Bencic was the champion the last time the event was held in 2017, but chose to compete in St. Petersburg instead.
Dayana Yastremska won the title, defeating Ajla Tomljanović in the final, 6–2, 2–6, 7–6$^{(7–3)}$.

## Seeds

* Garbiñe Muguruza (quarterfinals)
* Caroline Garcia (first round)
* Hsieh Su-wei (first round)
* Zheng Saisai (quarterfinals)
* Zhang Shuai (second round, retired)
* Ajla Tomljanović (final)
* Pauline Parmentier (first round)
* Dayana Yastremska (champion)

## 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 | Final |
| 8 | Dayana Yastremska | 6 | 6 | | | | | |
| | Magda Linette | 4 | 3 | | | | | |
| | Magda Linette | 4 | 3 | 8 | Dayana Yastremska | 6 | 2 | 7$^7$ |
| | | | | 6 | Ajla Tomljanović | 2 | 6 | 6$^3$ |
| 6 | Ajla Tomljanović | 6 | 6 | 6 | Ajla Tomljanović | 2 | 6 | 6$^3$ |
| | Tamara Zidanšek | 4 | 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 | G Muguruza | 6 | 6 | | | | | | | | | | | | | | |
| WC | S Lisicki | 3 | 4 | | 1 | G Muguruza | 6 | 7 | | | | | | | | | |
| | M Barthel | 6 | 1 | 6 | | M Barthel | 3 | 5 | | | | | | | | | |
| | F Ferro | 1 | 6 | 4 | | | | | | 1 | G Muguruza | 6$^5$ | 1 | | | | |
| WC | S Peng | 6 | 6 | | | | | | | 8 | D Yastremska | 7$^7$ | 6 | | | | |
| Q | C Paquet | 2 | 3 | | WC | S Peng | 1 | 4 | | | | | | | | | |
| Q | A Rus | 0 | 3 | | 8 | D Yastremska | 6 | 6 | | | | | | | | | |
| 8 | D Yastremska | 6 | 6 | | | | | | | | | | | 8 | D Yastremska | 6 | 6 |
| 3 | S-w Hsieh | 4 | 6$^2$ | | | | | | | | | | | | M Linette | 4 | 3 |
| | M Niculescu | 6 | 7$^7$ | | | M Niculescu | 6 | 3 | 2 | | | | | | | | |
| Q | P Hon | 1 | 6 | 2 | | M Linette | 4 | 6 | 6 | | | | | | | | |
| | M Linette | 6 | 2 | 6 | | | | | | | M Linette | 6 | 6 | | | | |
| | A Blinkova | 7 | 2 | 1 | | | | | | | Y Wang | 2 | 3 | | | | |
| | Y Wang | 5 | 6 | 6 | | Y Wang | 4 | | | | | | | | | | |
| | L Kumkhum | 2 | 1 | | 5 | S Zhang | 1$^r$ | | | | | | | | | | |
| 5 | S Zhang | 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 Tomljanović | 6 | 7$^8$ | | | | | | | | | | | | | | | |
| | S Vögele | 1 | 6$^6$ | | 6 | A Tomljanović | 7$^7$ | 6 | | | | | | | | | | |
| Q | C Perrin | 4 | 6 | 3 | | K Kozlova | 6$^0$ | 1 | | | | | | | | | | |
| | K Kozlova | 6 | 3 | 6 | | | | | | 6 | A Tomljanović | 6 | 6 | | | | | |
| | I-C Begu | 6 | 6 | | | | | | | 4 | S Zheng | 1 | 3 | | | | | |
| | E Rodina | 2 | 0 | | | I-C Begu | 2 | 4 | | | | | | | | | | |
| | M Minella | 7$^{10}$ | 4 | 4 | 4 | S Zheng | 6 | 6 | | | | | | | | | | |
| 4 | S Zheng | 6$^8$ | 6 | 6 | | | | | | | | | | | 6 | A Tomljanović | 6 | 6 |
| 7 | P Parmentier | 6 | 3 | 4 | | | | | | | | | | | | T Zidanšek | 4 | 1 |
| Q | Y Duan | 1 | 6 | 6 | Q | Y Duan | 6$^4$ | 5 | | | | | | | | | | |
| | V Golubic | 6 | 6 | | | V Golubic | 7$^7$ | 7 | | | | | | | | | | |
| | S Sorribes Tormo | 2 | 4 | | | | | | | | V Golubic | 6 | 1 | 2 | | | | |
| | T Zidanšek | 6 | 3 | | | | | | | | T Zidanšek | 4 | 6 | 6 | | | | |
| | T Babos | 0 | 1$^r$ | | | T Zidanšek | 6 | 0 | 7$^{11}$ | | | | | | | | | |
| Q | J Brady | 6 | 7$^7$ | | Q | J Brady | 3 | 6 | 6$^9$ | | | | | | | | | |
| 2/WC | C Garcia | 4 | 6$^3$ | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Arantxa Rus (qualified)
* Jennifer Brady (qualified)
* Caroline Dolehide (first round)
* Priscilla Hon (qualified)
* Conny Perrin (qualified)
* Han Xinyun (qualifying competition)
* Duan Yingying (qualified)
* Kurumi Nara (qualifying competition)
* Danka Kovinić (first round)
* Ayano Shimizu (qualifying competition)
* Ankita Raina (qualifying competition)
* Karman Thandi (first round)

### Qualifiers

* Arantxa Rus
* Jennifer Brady
* Chloé Paquet
* Priscilla Hon
* Conny Perrin
* Duan Yingying

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Arantxa Rus | 4 | 6 | 6 | | | | |
| WC | Nudnida Luangnam | 6 | 2 | 1 | | | | |
| WC | Nudnida Luangnam | 6 | 2 | 1 | 1 | Arantxa Rus | 6 | 7$^7$ |
| | | | | | | Liang En-shuo | 2 | 6$^2$ |
| | Liang En-shuo | 6 | 6 | | | Liang En-shuo | 2 | 6$^2$ |
| 9 | Danka Kovinić | 1 | 3 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Jennifer Brady | 6 | 6 | | | | |
| | Zuzana Zlochová | 1 | 1 | | | | |
| | Zuzana Zlochová | 1 | 1 | 2 | Jennifer Brady | 6 | 6 |
| | | | | 8 | Kurumi Nara | 1 | 2 |
| | Xun Fangying | 4 | 0 | 8 | Kurumi Nara | 1 | 2 |
| 8 | Kurumi Nara | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Caroline Dolehide | 6$^7$ | 6 | 5 | | | |
| | Yang Zhaoxuan | 7$^9$ | 2 | 7 | | | |
| | Yang Zhaoxuan | 7$^9$ | 2 | 7 | Yang Zhaoxuan | 3 | 3 |
| | | | | | Chloé Paquet | 6 | 6 |
| | Chloé Paquet | 6 | 7 | | Chloé Paquet | 6 | 6 |
| 12 | Karman Thandi | 3 | 5 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Priscilla Hon | 6 | 6 | | | | |
| | Naomi Broady | 3 | 2 | | | | |
| | Naomi Broady | 3 | 2 | 4 | Priscilla Hon | 6 | 6 |
| | | | | 10 | Ayano Shimizu | 2 | 3 |
| | Peangtarn Plipuech | 2 | 4 | 10 | Ayano Shimizu | 2 | 3 |
| 10 | Ayano Shimizu | 6 | 6 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Conny Perrin | 6 | 6 | | | | |
| | Zhang Yuxuan | 0 | 1 | | | | |
| | Zhang Yuxuan | 0 | 1 | 5 | Conny Perrin | 7$^7$ | 6 |
| | | | | 11 | Ankita Raina | 6$^1$ | 3 |
| WC | Ng Kwan-yau | 0 | 0 | 11 | Ankita Raina | 6$^1$ | 3 |
| 11 | Ankita Raina | 6 | 6 | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Han Xinyun | 6 | 6 | | | | | |
| WC | Yanin Wisitwarapron | 1 | 1 | | | | | |
| WC | Yanin Wisitwarapron | 1 | 1 | 6 | Han Xinyun | 1 | 6 | 5 |
| | | | | 7 | Duan Yingying | 6 | 2 | 7 |
| WC | Watsachol Sawatdee | 3 | 3 | 7 | Duan Yingying | 6 | 2 | 7 |
| 7 | Duan Yingying | 6 | 6 | | | | | |