# 2021 Budapest Grand Prix – Singles

Simona Halep was the defending champion, having won the previous edition in 2013, but chose not to participate.
Yulia Putintseva won the title, defeating Anhelina Kalinina in the final, 6–4, 6–0.

## Seeds

* Yulia Putintseva (champion)
* Danielle Collins (semifinals, retired)
* Bernarda Pera (second round)
* Irina-Camelia Begu (first round)
* Ana Bogdan (second round)
* Aliaksandra Sasnovich (second round)
* Viktoriya Tomova (first round)
* Sara Errani (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 | Semifinals | Final | Final | Final | Final |
| 1 | Yulia Putintseva | 6 | 3 | 6 | | | | |
| WC | Dalma Gálfi | 2 | 6 | 2 | | | | |
| WC | Dalma Gálfi | 2 | 6 | 2 | 1 | Yulia Putintseva | 6 | 6 |
| | | | | | | Anhelina Kalinina | 4 | 0 |
| | Anhelina Kalinina | 7$^7$ | 4 | | | Anhelina Kalinina | 4 | 0 |
| 2 | Danielle Collins | 6$^5$ | 1$^r$ | | | | | |

### 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 | Semifinals |
| 1 | Y Putintseva | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | E Gorgodze | 2 | 4 | | 1 | Y Putintseva | 6 | 6 | | | | | | | | | | | |
| | A Konjuh | 4 | 6 | 6 | | A Konjuh | 4 | 3 | | | | | | | | | | | |
| Q | T Mrdeža | 6 | 3 | 2 | | | | | | 1 | Y Putintseva | 6$^4$ | 6 | 7 | | | | | |
| PR | K Kozlova | 7$^{11}$ | 6 | | | | | | | PR | K Kozlova | 7$^7$ | 0 | 5 | | | | | |
| | B Haas | 6$^9$ | 3 | | PR | K Kozlova | 4 | 6 | 6 | | | | | | | | | | |
| | V Lepchenko | 4 | 5 | | 5 | A Bogdan | 6 | 4 | 2 | | | | | | | | | | |
| 5 | A Bogdan | 6 | 7 | | | | | | | | | | | | 1 | Y Putintseva | 6 | 3 | 6 |
| 4 | I-C Begu | 3 | 4 | | | | | | | | | | | | WC | D Gálfi | 2 | 6 | 2 |
| PR | AK Schmiedlová | 6 | 6 | | PR | AK Schmiedlová | 2 | 5 | | | | | | | | | | | |
| | A Bolsova | 6$^4$ | 3 | | WC | D Gálfi | 6 | 7 | | | | | | | | | | | |
| WC | D Gálfi | 7$^7$ | 6 | | | | | | | WC | D Gálfi | 6 | 6 | | | | | | |
| | T Korpatsch | 2 | 2 | | | | | | | Q | O Danilović | 4 | 2 | | | | | | |
| Q | O Danilović | 6 | 6 | | Q | O Danilović | 6 | 6 | | | | | | | | | | | |
| | I Bara | 4 | 7 | 6 | | I Bara | 4 | 3 | | | | | | | | | | | |
| 8 | S Errani | 6 | 5 | 2 | | | | | | | | | | | | | | | |

### Bottom 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 |
| 6 | A Sasnovich | 6 | 2 | | | | | | | | | | | | | |
| | T Babos | 0 | 0$^r$ | | 6 | A Sasnovich | 6$^4$ | 2 | | | | | | | | |
| | M Sherif | 3 | 1 | | WC | P Udvardy | 7$^7$ | 6 | | | | | | | | |
| WC | P Udvardy | 6 | 6 | | | | | | WC | P Udvardy | 4 | 4 | | | | |
| | A Kalinina | 6 | 7$^7$ | | | | | | | A Kalinina | 6 | 6 | | | | |
| | A Kalinskaya | 4 | 6$^5$ | | | A Kalinina | 7 | 6 | | | | | | | | |
| Q | J Grabher | 7 | 1 | 2 | 3 | B Pera | 5 | 3 | | | | | | | | |
| 3 | B Pera | 5 | 6 | 6 | | | | | | | | | | A Kalinina | 7$^7$ | 4 |
| 7 | V Tomova | 2 | 3 | | | | | | | | | | 2 | D Collins | 6$^5$ | 1$^r$ |
| Q | P Ormaechea | 6 | 6 | | Q | P Ormaechea | 6 | 7$^8$ | | | | | | | | |
| PR | I Jorović | 5 | 7$^8$ | 7$^7$ | PR | I Jorović | 1 | 6$^6$ | | | | | | | | |
| Q | J Cristian | 7 | 6$^6$ | 6$^3$ | | | | | Q | P Ormaechea | 1 | 4 | | | | |
| | E Cocciaretto | 4 | 5 | | | | | | 2 | D Collins | 6 | 6 | | | | |
| WC | RL Jani | 6 | 7 | | WC | RL Jani | 5 | 0 | | | | | | | | |
| LL | M Di Giuseppe | 2 | 1 | | 2 | D Collins | 7 | 6 | | | | | | | | |
| 2 | D Collins | 6 | 6 | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Jaqueline Cristian (qualified)
* Olga Danilović (qualified)
* Cristina Bucșa (qualifying competition)
* Lara Arruabarrena (first round)
* Katie Volynets (first round)
* Julia Grabher (qualified)
* Tereza Mrdeža (qualified)
* Martina Di Giuseppe (qualifying competition; lucky loser)
* Ekaterine Gorgodze (qualified)
* Jamie Loeb (qualifying competition)
* Katharina Gerlach (first round)
* Kateryna Bondarenko (first round)

### Qualifiers

* Jaqueline Cristian
* Olga Danilović
* Tereza Mrdeža
* Paula Ormaechea
* Ekaterine Gorgodze
* Julia Grabher

### Lucky loser

* Martina Di Giuseppe

### Draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Jaqueline Cristian | 1 | 6 | 6 | | | | | |
| WC | Fanny Stollár | 6 | 1 | 2 | | | | | |
| WC | Fanny Stollár | 6 | 1 | 2 | 1 | Jaqueline Cristian | 6 | 4 | 7$^7$ |
| | | | | | 8 | Martina Di Giuseppe | 1 | 6 | 6$^3$ |
| | Carolina Alves | 4 | 7 | 4 | 8 | Martina Di Giuseppe | 1 | 6 | 6$^3$ |
| 8 | Martina Di Giuseppe | 6 | 5 | 6 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Olga Danilović | 6 | 6 | | | | | | |
| | Irene Burillo Escorihuela | 4 | 3 | | | | | | |
| | Irene Burillo Escorihuela | 4 | 3 | | 2 | Olga Danilović | 6 | 3 | 6 |
| | | | | | Alt | Miriam Bulgaru | 3 | 6 | 3 |
| Alt | Miriam Bulgaru | 6 | 4 | 6 | Alt | Miriam Bulgaru | 3 | 6 | 3 |
| 11 | Katharina Gerlach | 3 | 6 | 2 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Cristina Bucșa | 6 | 5 | 6 | | | | |
| WC | Dorka Drahota-Szabó | 3 | 7 | 0 | | | | |
| WC | Dorka Drahota-Szabó | 3 | 7 | 0 | 3 | Cristina Bucșa | 4 | 6$^2$ |
| | | | | | 7 | Tereza Mrdeža | 6 | 7$^7$ |
| WC | Natália Szabanin | 4 | 2 | | 7 | Tereza Mrdeža | 6 | 7$^7$ |
| 7 | Tereza Mrdeža | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Lara Arruabarrena | 2 | 2 | | | |
| | Victoria Duval | 6 | 6 | | | |
| | Victoria Duval | 6 | 6 | Victoria Duval | 6$^3$ | 2 |
| | | | | Paula Ormaechea | 7$^7$ | 6 |
| | Paula Ormaechea | 6 | 6 | Paula Ormaechea | 7$^7$ | 6 |
| 12 | Kateryna Bondarenko | 2 | 3 | | | |

#### Fifth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Katie Volynets | 6$^5$ | 6 | 3 | | | | | |
| | Andrea Lázaro García | 7$^7$ | 1 | 6 | | | | | |
| | Andrea Lázaro García | 7$^7$ | 1 | 6 | | Andrea Lázaro García | 6 | 3 | 2 |
| | | | | | 9 | Ekaterine Gorgodze | 3 | 6 | 6 |
| | Anna Bondár | 6$^3$ | 6 | 3 | 9 | Ekaterine Gorgodze | 3 | 6 | 6 |
| 9 | Ekaterine Gorgodze | 7$^7$ | 4 | 6 | | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | Julia Grabher | 6 | 6 | | | | |
| WC | Amarissa Kiara Tóth | 3 | 4 | | | | |
| WC | Amarissa Kiara Tóth | 3 | 4 | 6 | Julia Grabher | 6 | 6 |
| | | | | 10 | Jamie Loeb | 0 | 3 |
| | Zuzana Zlochová | 5 | 3 | 10 | Jamie Loeb | 0 | 3 |
| 10 | Jamie Loeb | 7 | 6 | | | | |