# 2021 Bad Homburg Open – Singles

Angelique Kerber defeated Kateřina Siniaková in the final, 6–3, 6–2, to win the singles tennis title at the 2021 Bad Homburg Open. It was Kerber's 13th career WTA Tour singles title, her first in three years.
This was the inaugural edition of the tournament.

## Seeds

* Petra Kvitová (semifinals)
* Victoria Azarenka (quarterfinals, withdrew)
* Jessica Pegula (second round)
* Angelique Kerber (champion)
* Nadia Podoroska (quarterfinals)
* Sorana Cîrstea (first round)
* Sara Sorribes Tormo (semifinals)
* Laura Siegemund (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 | Semifinals | Final | Final | Final | Final |
| 1 | Petra Kvitová | 6 | 4 | 6$^3$ | | | | |
| 4 | Angelique Kerber | 3 | 6 | 7$^7$ | | | | |
| 4 | Angelique Kerber | 3 | 6 | 7$^7$ | 4 | Angelique Kerber | 6 | 6 |
| | | | | | | Kateřina Siniaková | 3 | 2 |
| | Kateřina Siniaková | 6 | 6 | | | Kateřina Siniaková | 3 | 2 |
| 7 | Sara Sorribes Tormo | 2 | 4 | | | | | |

### 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 | P Kvitová | 4 | 6 | 6 | | | | | | | | | | | | | | | |
| Q | K Piter | 6 | 1 | 4 | 1 | P Kvitová | 6 | 6$^4$ | 6 | | | | | | | | | | |
| Q | A Zaja | 0 | 4 | | | A Li | 2 | 7$^7$ | 1 | | | | | | | | | | |
| | A Li | 6 | 6 | | | | | | | 1 | P Kvitová | 6 | 7$^{12}$ | | | | | | |
| | PM Țig | 7$^7$ | 6 | | | | | | | 5 | N Podoroska | 3 | 6$^{10}$ | | | | | | |
| WC | M Barthel | 6$^4$ | 3 | | | PM Țig | 6$^4$ | 6 | 4 | | | | | | | | | | |
| WC | M Guth | 0 | 3 | | 5 | N Podoroska | 7$^7$ | 2 | 6 | | | | | | | | | | |
| 5 | N Podoroska | 6 | 6 | | | | | | | | | | | | 1 | P Kvitová | 6 | 4 | 6$^3$ |
| 4 | A Kerber | 6 | 6 | | | | | | | | | | | | 4 | A Kerber | 3 | 6 | 7$^7$ |
| Q | E Yashina | 1 | 1 | | 4 | A Kerber | 6 | 6 | | | | | | | | | | | |
| | A Blinkova | 7$^7$ | 4 | 6 | | A Blinkova | 0 | 2 | | | | | | | | | | | |
| | C Tauson | 6$^4$ | 6 | 2 | | | | | | 4 | A Kerber | 2 | 6 | 6 | | | | | |
| | D Kovinić | 2 | 1 | | | | | | | | A Anisimova | 6 | 3 | 3 | | | | | |
| | A Anisimova | 6 | 6 | | A Anisimova | A Anisimova | 6 | 7 | | | | | | | | | | | |
| | A Petkovic | 6 | 6 | | A Petkovic | A Petkovic | 1 | 5 | | | | | | | | | | | |
| 6 | S Cîrstea | 3 | 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 | Semifinals |
| 8 | L Siegemund | 2 | 7$^7$ | 6 | | | | | | | | | | | | | |
| LL | R Bhatia | 6 | 6$^2$ | 1 | 8 | L Siegemund | 6 | 6 | | | | | | | | | |
| | R Peterson | 5 | 6 | 6$^5$ | | T Korpatsch | 2 | 2 | | | | | | | | | |
| | T Korpatsch | 7 | 2 | 7$^7$ | | | | | | 8 | L Siegemund | 5 | 4 | | | | |
| | K Siniaková | 6 | 6 | | | | | | | | K Siniaková | 7 | 6 | | | | |
| | V Gracheva | 3 | 2 | | | K Siniaková | 6 | 5 | 6 | | | | | | | | |
| | A Hesse | 1 | 2 | | 3 | J Pegula | 3 | 7 | 4 | | | | | | | | |
| 3 | J Pegula | 6 | 6 | | | | | | | | | | | | K Siniaková | 6 | 6 |
| 7 | S Sorribes Tormo | 6 | 3 | 6 | | | | | | | | | | 7 | S Sorribes Tormo | 2 | 4 |
| | M Trevisan | 4 | 6 | 2 | 7 | S Sorribes Tormo | 6 | 6 | | | | | | | | | |
| | A Danilina | 2 | 2 | | | M Doi | 4 | 4 | | | | | | | | | |
| | M Doi | 6 | 6 | | | | | | | 7 | S Sorribes Tormo | w/o | | | | | |
| | A Cornet | 6 | 2 | 6 | | | | | | 2/WC | V Azarenka | | | | | | |
| | A Rus | 3 | 6 | 1 | | A Cornet | 4 | 6 | 6$^7$ | | | | | | | | |
| Q | Y Hatouka | 5 | 0 | | 2/WC | V Azarenka | 6 | 3 | 7$^9$ | | | | | | | | |
| 2/WC | V Azarenka | 7 | 6 | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Yuliya Hatouka (qualified)
* Riya Bhatia (qualifying competition, lucky loser)
* Katarzyna Piter (qualified)
* Anna Zaja (qualified)
* Ekaterina Yashina (qualified)
* Kimberley Zimmermann (qualifying competition)
* Nastasja Schunk (qualifying competition)
* Julia Middendorf (qualifying competition)

### Qualifiers

* Yuliya Hatouka
* Ekaterina Yashina
* Katarzyna Piter
* Anna Zaja

### Lucky loser

* Riya Bhatia

### Draw
#### First qualifier

| Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Yuliya Hatouka | 6 | 6 | |
| 6 | Kimberley Zimmermann | 3 | 3 | |

#### Second qualifier

| Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Riya Bhatia | 6$^1$ | 0 | |
| 5 | Ekaterina Yashina | 7$^7$ | 6 | |

#### Third qualifier

| Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Katarzyna Piter | 7$^8$ | 2 | 7$^7$ |
| 7/WC | Nastasja Schunk | 6$^6$ | 6 | 6$^5$ |

#### Fourth qualifier

| Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4/PR | Anna Zaja | 6 | 7 | |
| 8/WC | Julia Middendorf | 2 | 5 | |