# 2021 Transylvania Open – Singles

Anett Kontaveit defeated Simona Halep in the final, 6–2, 6–3 to win the first edition of the women's singles tennis event at the 2021 Transylvania Open. Kontaveit won the title without dropping a set. By winning the title, Kontaveit qualified for the WTA Finals, overtaking Ons Jabeur in the Race to Guadalajara, and also entered the top 10 of the WTA rankings for the first time. Her win over Halep in the final also marked her first victory over the former world No. 1.
Halep reached the final losing just 12 games. Her loss snapped a 14 match win streak on home soil.

## Seeds

* Simona Halep (final)
* Anett Kontaveit (champion)
* Emma Raducanu (quarterfinals)
* Jil Teichmann (first round)
* Ajla Tomljanović (second round)
* Marta Kostyuk (semifinals)
* Irina-Camelia Begu (first round)
* Anhelina Kalinina (quarterfinals)

## 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 | Simona Halep | 6 | 6 | | | | |
| 6 | Marta Kostyuk | 0 | 1 | | | | |
| 6 | Marta Kostyuk | 0 | 1 | 1 | Simona Halep | 2 | 3 |
| | | | | 2 | Anett Kontaveit | 6 | 6 |
| | Rebecca Peterson | 3 | 2 | 2 | Anett Kontaveit | 6 | 6 |
| 2 | Anett Kontaveit | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | S Halep | 6 | 6 | | | | | | | | | | | | | |
| | E-G Ruse | 1 | 2 | | 1 | S Halep | 6 | 6 | | | | | | | | |
| | A Petkovic | 4 | 6 | 4 | | V Gracheva | 4 | 2 | | | | | | | | |
| | V Gracheva | 6 | 2 | 6 | | | | | 1 | S Halep | 6 | 6 | | | | |
| WC | J Cristian | 3 | 7$^{10}$ | 7$^7$ | | | | | WC | J Cristian | 1 | 1 | | | | |
| | K Juvan | 6 | 6$^8$ | 6$^3$ | WC | J Cristian | 7$^7$ | 7 | | | | | | | | |
| | A Potapova | 2 | 7 | 5 | 5 | A Tomljanović | 6$^5$ | 5 | | | | | | | | |
| 5 | A Tomljanović | 6 | 5 | 7 | | | | | | | | | 1 | S Halep | 6 | 6 |
| 3 | E Raducanu | 4 | 7 | 6 | | | | | | | | | 6 | M Kostyuk | 0 | 1 |
| | P Hercog | 6 | 5 | 1 | 3 | E Raducanu | 6 | 6 | | | | | | | | |
| | A Bogdan | 7$^7$ | 6 | | | A Bogdan | 3 | 4 | | | | | | | | |
| PR | I Jorović | 6$^1$ | 4 | | | | | | 3 | E Raducanu | 2 | 1 | | | | |
| Q | A Bondár | 3 | 5 | | | | | | 6 | M Kostyuk | 6 | 6 | | | | |
| PR | M Barthel | 6 | 7 | | PR | M Barthel | 4 | 4 | | | | | | | | |
| | B Pera | 3 | 4 | | 6 | M Kostyuk | 6 | 6 | | | | | | | | |
| 6 | M Kostyuk | 6 | 6 | | | | | | | | | | | | | |

### Bottom 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 |
| 7 | I-C Begu | 6$^2$ | 6 | 4 | | | | | | | | | | | | | |
| WC | I Bara | 7$^7$ | 0 | 6 | WC | I Bara | 0 | 3 | | | | | | | | | |
| LL | J Fett | 1 | 3 | | | R Peterson | 6 | 6 | | | | | | | | | |
| | R Peterson | 6 | 6 | | | | | | | R Peterson | 6 | 3 | 6 | | | | |
| Q | L Tsurenko | 7 | 6 | | | | | | Q | L Tsurenko | 2 | 6 | 3 | | | | |
| WC | A Prisăcariu | 5 | 2 | | Q | L Tsurenko | 6 | 7 | | | | | | | | | |
| Q | A Gasanova | 4 | 6 | 7 | Q | A Gasanova | 2 | 5 | | | | | | | | | |
| 4 | J Teichmann | 6 | 0 | 5 | | | | | | | | | | | R Peterson | 3 | 2 |
| 8 | A Kalinina | 6 | 6 | | | | | | | | | | | 2 | A Kontaveit | 6 | 6 |
| Q | L Pattinama Kerkhove | 1 | 1 | | 8 | A Kalinina | 6 | 6 | | | | | | | | | |
| Q | A Ignatik | 7 | 4 | 4 | | A-L Friedsam | 2 | 2 | | | | | | | | | |
| | A-L Friedsam | 5 | 6 | 6 | | | | | 8 | A Kalinina | 3 | 1 | | | | | |
| | D Kovinić | 4 | 4 | | | | | | 2 | A Kontaveit | 6 | 6 | | | | | |
| | A Van Uytvanck | 6 | 6 | | | A Van Uytvanck | 3 | 4 | | | | | | | | | |
| Q | A Krunić | 3 | 5 | | 2 | A Kontaveit | 6 | 6 | | | | | | | | | |
| 2 | A Kontaveit | 6 | 7 | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Anna Bondár (qualified)
* Anna-Lena Friedsam (moved to main draw)
* Anastasia Gasanova (qualified)
* Aleksandra Krunić (qualified)
* Lesia Tsurenko (qualified)
* Lesley Pattinama Kerkhove (qualified)
* Ekaterine Gorgodze (first round)
* Rebecca Šramková (first round)
* Ellen Perez (withdrew, still playing in Tenerife)
* Anastasia Zakharova (first round)
* Jana Fett (qualifying competition, lucky loser)
* Seone Mendez (qualifying competition)

### Qualifiers

* Anna Bondár
* Alexandra Ignatik
* Anastasia Gasanova
* Aleksandra Krunić
* Lesia Tsurenko
* Lesley Pattinama Kerkhove

### Lucky loser

* Jana Fett

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Anna Bondár | 6 | 6 | | | | | |
| | Angelina Gabueva | 2 | 1 | | | | | |
| | Angelina Gabueva | 2 | 1 | | 1 | Anna Bondár | 6 | 6 |
| | | | | | 11 | Jana Fett | 2 | 0 |
| | Amina Anshba | 2 | 7$^7$ | 3 | 11 | Jana Fett | 2 | 0 |
| 11 | Jana Fett | 6 | 6$^3$ | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | WC | Vanessa Popa Teiușanu | 0 | 1 |
| | | | | | Alexandra Ignatik | 6 | 6 |
| | Alexandra Ignatik | 6 | 6 | | Alexandra Ignatik | 6 | 6 |
| 8 | Rebecca Šramková | 3 | 2 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Anastasia Gasanova | 6 | 6 | | | | |
| WC | Ilinca Amariei | 1 | 1 | | | | |
| WC | Ilinca Amariei | 1 | 1 | 3 | Anastasia Gasanova | 6 | 6 |
| | | | | WC | Briana Szabó | 1 | 0 |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Aleksandra Krunić | 6 | 6 | | | | |
| | Anna Danilina | 2 | 0 | | | | |
| | Anna Danilina | 2 | 0 | 4 | Aleksandra Krunić | 6 | 6 |
| | | | | | Yuriko Miyazaki | 1 | 2 |
| | Yuriko Miyazaki | 6 | 7 | | Yuriko Miyazaki | 1 | 2 |
| 7 | Ekaterine Gorgodze | 4 | 5 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Lesia Tsurenko | 7$^7$ | 6 | | | | |
| | Yvonne Cavallé Reimers | 6$^3$ | 3 | | | | |
| | Yvonne Cavallé Reimers | 6$^3$ | 3 | 5 | Lesia Tsurenko | 7 | 6 |
| | | | | WC | Andreea Roșca | 5 | 1 |
| WC | Andreea Roșca | 7$^7$ | 6 | WC | Andreea Roșca | 5 | 1 |
| 10 | Anastasia Zakharova | 6$^4$ | 3 | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | | 6 | Lesley Pattinama Kerkhove | 6 | 6 | |
| | | | | | 12 | Seone Mendez | 3 | 1 | |