# 2025 Transylvania Open – Singles

Anastasia Potapova defeated Lucia Bronzetti in the final, 4–6, 6–1, 6–2 to win the singles title at the 2025 Transylvania Open. It was her third career WTA Tour title.
Karolína Plíšková was the reigning champion, but did not participate this year.
This tournament marked the final professional appearance of two-time major champion and former world No. 1 Simona Halep, who announced her retirement from professional tennis at the tournament. She lost to Bronzetti in the first round.
The first round match between Viktorija Golubic and Arantxa Rus was the longest match on the 2025 WTA Tour thus far. It lasted 3 hours and 30 minutes and had the joint-third longest regular (first to seven) third-set tiebreak of the 2020s (with a 12–10 final scoreline).

## Seeds

* Anastasia Potapova (champion)
* Olga Danilović (second round)
* Peyton Stearns (second round)
* Anhelina Kalinina (quarterfinals)
* Kateřina Siniaková (semifinals, retired)
* Jéssica Bouzas Maneiro (first round)
* Elisabetta Cocciaretto (quarterfinals)
* Jaqueline Cristian (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 | Final |
| 1 | Anastasia Potapova | 6 | 7 | | | | | |
| LL | Aliaksandra Sasnovich | 3 | 5 | | | | | |
| LL | Aliaksandra Sasnovich | 3 | 5 | 1 | Anastasia Potapova | 4 | 6 | 6 |
| | | | | | Lucia Bronzetti | 6 | 1 | 2 |
| | Lucia Bronzetti | 4 | | | Lucia Bronzetti | 6 | 1 | 2 |
| 5 | Kateřina Siniaková | 0$^r$ | | | | | | |

### 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 | Semifinals |
| 1 | A Potapova | 6 | 6 | | | | | | | | | | | | | | | |
| PR | J Grabher | 4 | 0 | | 1 | A Potapova | 6 | 7 | | | | | | | | | | |
| | A Rus | 5 | 6 | 6$^{10}$ | | V Golubic | 4 | 5 | | | | | | | | | | |
| | V Golubic | 7 | 4 | 7$^{12}$ | | | | | | 1 | A Potapova | 6 | 6 | | | | | |
| Q | S Sorribes Tormo | 2 | 2 | | | | | | | Q | E Seidel | 2 | 3 | | | | | |
| | A Blinkova | 6 | 6 | | | A Blinkova | 2 | 6$^5$ | | | | | | | | | | |
| Q | E Seidel | 6 | 6 | | Q | E Seidel | 6 | 7$^7$ | | | | | | | | | | |
| 8 | J Cristian | 4 | 2 | | | | | | | | | | | | 1 | A Potapova | 6 | 7 |
| 4 | A Kalinina | 6 | 6 | | | | | | | | | | | | LL | A Sasnovich | 3 | 5 |
| WC | E-G Ruse | 2 | 3 | | 4 | A Kalinina | 1 | 6 | 6 | | | | | | | | | |
| Q | A Bondár | 6$^2$ | 6$^6$ | | | S Lamens | 6 | 4 | 4 | | | | | | | | | |
| | S Lamens | 7$^7$ | 7$^8$ | | | | | | | 4 | A Kalinina | 6 | 4 | 6$^3$ | | | | |
| | S Cîrstea | 1 | 6 | 4 | | | | | | LL | A Sasnovich | 2 | 6 | 7$^7$ | | | | |
| Q | M Stakusic | 6 | 1 | 6 | Q | M Stakusic | 3 | 5 | | | | | | | | | | |
| LL | A Sasnovich | 6$^0$ | 7 | 6 | LL | A Sasnovich | 6 | 7 | | | | | | | | | | |
| 6 | J Bouzas Maneiro | 7$^7$ | 5 | 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 |
| 7 | E Cocciaretto | 6 | 7 | | | | | | | | | | | | | |
| | I-C Begu | 3 | 5 | | 7 | E Cocciaretto | 6 | 6 | | | | | | | | |
| WC | A Bogdan | 6 | 6 | | WC | A Bogdan | 3 | 0 | | | | | | | | |
| PR | J Burrage | 2 | 3 | | | | | | | 7 | E Cocciaretto | 1 | 4 | | | |
| WC | S Halep | 1 | 1 | | | | | | | | L Bronzetti | 6 | 6 | | | |
| | L Bronzetti | 6 | 6 | | | L Bronzetti | 6 | 7$^7$ | | | | | | | | |
| | V Gracheva | 6 | 2 | 2 | 3 | P Stearns | 2 | 6$^1$ | | | | | | | | |
| 3 | P Stearns | 2 | 6 | 6 | | | | | | | | | | | L Bronzetti | 4 |
| 5 | K Siniaková | 6 | 6$^5$ | 6 | | | | | | | | | | 5 | K Siniaková | 0$^r$ |
| Q | F Jones | 4 | 7$^7$ | 4 | 5 | K Siniaková | 2 | 6 | 6 | | | | | | | |
| Q | D Snigur | 5 | 6 | 4 | | C Dolehide | 6 | 1 | 4 | | | | | | | |
| | C Dolehide | 7 | 2 | 6 | | | | | | 5 | K Siniaková | 6 | 7$^9$ | | | |
| | M Sherif | 6 | 4 | 1 | | | | | | | V Tomova | 3 | 6$^7$ | | | |
| | V Tomova | 3 | 6 | 6 | | V Tomova | 7 | 7 | | | | | | | | |
| | A Parks | 3 | 3 | | 2 | O Danilović | 5 | 5 | | | | | | | | |
| 2 | O Danilović | 6 | 6 | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Anna Bondár (qualified)
* Sara Sorribes Tormo (qualified)
* Anca Todoni (qualifying competition)
* Viktorija Golubic (moved to main draw)
* Marina Stakusic (qualified)
* Maja Chwalińska (qualifying competition)
* Jessika Ponchet (first round)
* Daria Snigur (qualified)
* Dalma Gálfi (first round)
* Anastasia Zakharova (qualifying competition)
* Ella Seidel (qualified)
* Aliaksandra Sasnovich (qualifying competition, lucky loser)

### Qualifiers

* Anna Bondár
* Sara Sorribes Tormo
* Daria Snigur
* Francesca Jones
* Marina Stakusic
* Ella Seidel

### Lucky loser

* Aliaksandra Sasnovich

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Anna Bondár | 6 | 7$^7$ | | | | |
| | Leyre Romero Gormaz | 4 | 6$^4$ | | | | |
| | Leyre Romero Gormaz | 4 | 6$^4$ | 1 | Anna Bondár | 6 | 6 |
| | | | | 10 | Anastasia Zakharova | 4 | 2 |
| | Barbora Palicová | 3 | 4 | 10 | Anastasia Zakharova | 4 | 2 |
| 10 | Anastasia Zakharova | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Sara Sorribes Tormo | 6 | 6 | | | | |
| WC | Maria Sara Popa | 0 | 3 | | | | |
| WC | Maria Sara Popa | 0 | 3 | 2 | Sara Sorribes Tormo | 6 | 7 |
| | | | | 12 | Aliaksandra Sasnovich | 4 | 5 |
| | Miriam Bulgaru | 3 | 4 | 12 | Aliaksandra Sasnovich | 4 | 5 |
| 12 | Aliaksandra Sasnovich | 6 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Anca Todoni | 7$^9$ | 4 | 7 | | | | |
| | Rebeka Masarova | 6$^7$ | 6 | 5 | | | | |
| | Rebeka Masarova | 6$^7$ | 6 | 5 | 3 | Anca Todoni | 6$^3$ | 4 |
| | | | | | 8 | Daria Snigur | 7$^7$ | 6 |
| | Susan Bandecchi | 2 | 0 | | 8 | Daria Snigur | 7$^7$ | 6 |
| 8 | Daria Snigur | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| Alt | Hina Inoue | 6 | 6 | | | | | |
| WC | Briana Szabó | 1 | 2 | | | | | |
| WC | Briana Szabó | 1 | 2 | | Alt | Hina Inoue | 4 | 3 |
| | | | | | | Francesca Jones | 6 | 6 |
| | Francesca Jones | 1 | 7$^7$ | 6 | | Francesca Jones | 6 | 6 |
| 9 | Dalma Gálfi | 6 | 6$^2$ | 3 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Marina Stakusic | 7$^{10}$ | 6 | | | | |
| WC | Georgia Crăciun | 6$^8$ | 3 | | | | |
| WC | Georgia Crăciun | 6$^8$ | 3 | 5 | Marina Stakusic | 6 | 7 |
| | | | | | Tamara Korpatsch | 2 | 5 |
| | Tamara Korpatsch | 6 | 6 | | Tamara Korpatsch | 2 | 5 |
| 7 | Jessika Ponchet | 3 | 4 | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Maja Chwalińska | 6 | 6 | | | | |
| WC | Ilinca Amariei | 1 | 1 | | | | |
| WC | Ilinca Amariei | 1 | 1 | 6 | Maja Chwalińska | 4 | 6$^2$ |
| | | | | 11 | Ella Seidel | 6 | 7$^7$ |
| | Lola Radivojević | 1 | 2 | 11 | Ella Seidel | 6 | 7$^7$ |
| 11 | Ella Seidel | 6 | 6 | | | | |