# 2021 Hamburg European Open – Women's singles

Kim Clijsters was the defending champion, having won the previous edition in 2002, but chose not to participate.
Elena-Gabriela Ruse won her maiden WTA Tour singles title as a qualifier, defeating Andrea Petkovic in the final, 7–6$^{(8–6)}$, 6–4.
This tournament marked Dayana Yastremska's return to professional tennis, after her suspension for testing positive for a prohibited substance was lifted by the ITF.

## Seeds

The top four seeds received a bye into the second round.
* Dayana Yastremska (semifinals)
* Yulia Putintseva (second round)
* Tamara Zidanšek (quarterfinals)
* Danielle Collins (quarterfinals)
* Fiona Ferro (first round)
* Jil Teichmann (first round)
* Bernarda Pera (second round)
* Caroline Garcia (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 | Dayana Yastremska | 6 | 1 | 4 | | | | |
| Q | Elena-Gabriela Ruse | 2 | 6 | 6 | | | | |
| Q | Elena-Gabriela Ruse | 2 | 6 | 6 | Q | Elena-Gabriela Ruse | 7$^8$ | 6 |
| | | | | | | Andrea Petkovic | 6$^6$ | 4 |
| WC | Jule Niemeier | 6$^4$ | 6 | 5 | | Andrea Petkovic | 6$^6$ | 4 |
| | Andrea Petkovic | 7$^7$ | 4 | 7 | | | | |

### 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 | D Yastremska | 7$^7$ | 6 | | | | | | | | | | | |
| | M Fręch | 6 | 6 | | | M Fręch | 6$^5$ | 1 | | | | | | | | | | | |
| Q | M Melnikova | 4 | 4 | | | | | | | 1 | D Yastremska | 7$^7$ | 6 | | | | | | |
| | J Paolini | 5 | 5 | | | | | | | | S Errani | 6$^4$ | 4 | | | | | | |
| | A Konjuh | 7 | 7 | | | A Konjuh | 6$^5$ | 3 | | | | | | | | | | | |
| | S Errani | 7 | 6 | | | S Errani | 7$^7$ | 6 | | | | | | | | | | | |
| 5 | F Ferro | 5 | 3 | | | | | | | | | | | | 1 | D Yastremska | 6 | 1 | 4 |
| | | | | | | | | | | | | | | | Q | E-G Ruse | 2 | 6 | 6 |
| | | | | | 4 | D Collins | 1 | 6 | 6 | | | | | | | | | | |
| LL | K Kučová | 6 | 7$^7$ | | LL | K Kučová | 6 | 2 | 3 | | | | | | | | | | |
| WC | M Barthel | 3 | 6$^4$ | | | | | | | 4 | D Collins | 4 | 6 | 5 | | | | | |
| Q | A Zaja | 0 | 6 | 7 | | | | | | Q | E-G Ruse | 6 | 1 | 7 | | | | | |
| | V Tomova | 6 | 3 | 5 | Q | A Zaja | 2 | 2 | | | | | | | | | | | |
| Q | E-G Ruse | 7 | 7$^7$ | | Q | E-G Ruse | 6 | 6 | | | | | | | | | | | |
| 6 | J Teichmann | 5 | 6$^1$ | | | | | | | | | | | | | | | | |

### 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 | Semifinals |
| 8 | C Garcia | 4 | 2 | | | | | | | | | | | | | | | |
| WC | J Niemeier | 6 | 6 | | WC | J Niemeier | 6 | 6$^5$ | 6 | | | | | | | | | |
| Q | M Minella | 5 | 3 | | WC | T Korpatsch | 2 | 7$^7$ | 3 | | | | | | | | | |
| WC | T Korpatsch | 7 | 6 | | | | | | | WC | J Niemeier | 6 | 6 | | | | | |
| | I Bara | 2 | 6$^5$ | | | | | | | 3 | T Zidanšek | 2 | 4 | | | | | |
| | Kr Plíšková | 6 | 7$^7$ | | | Kr Plíšková | 3 | 6 | 3 | | | | | | | | | |
| | | | | | 3 | T Zidanšek | 6 | 3 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | WC | J Niemeier | 6$^4$ | 6 | 5 |
| 7 | B Pera | 6 | 6 | | | | | | | | | | | | A Petkovic | 7$^7$ | 4 | 7 |
| | K Kawa | 1 | 2 | | 7 | B Pera | 6 | 3 | 4 | | | | | | | | | |
| | A Sharma | 6 | 2 | 4 | | Y Bonaventure | 3 | 6 | 6 | | | | | | | | | |
| | Y Bonaventure | 1 | 6 | 6 | | | | | | | Y Bonaventure | 2 | 5 | | | | | |
| | A-L Friedsam | 4 | 5 | | | | | | | | A Petkovic | 6 | 7 | | | | | |
| | A Petkovic | 6 | 7 | | | A Petkovic | 6 | 1 | 6 | | | | | | | | | |
| | | | | | 2 | Y Putintseva | 2 | 6 | 4 | | | | | | | | | |

## Qualifying
### Seeds

* Magdalena Fręch (moved to the main draw)
* Kristína Kučová (qualifying competition, lucky loser)
* Marina Melnikova (qualified)
* Elena-Gabriela Ruse (qualified)
* Isabella Shinikova (qualifying competition)
* Katharina Gerlach (qualifying competition)
* Mandy Minella (qualified)
* Paula Ormaechea (first round)

### Qualifiers

* Anna Zaja
* Mandy Minella
* Marina Melnikova
* Elena-Gabriela Ruse

### Lucky loser

* Kristína Kučová

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| Alt | Jasmin Jebawy | 2 | 3 | | | | | |
| | Anna Zaja | 6 | 6 | | | | | |
| | Anna Zaja | 6 | 6 | | Anna Zaja | 7 | 3 | 6 |
| | | | | 6 | Katharina Gerlach | 5 | 6 | 4 |
| | Katarzyna Piter | 2 | 5 | 6 | Katharina Gerlach | 5 | 6 | 4 |
| 6 | Katharina Gerlach | 6 | 7 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Kristína Kučová | 6 | 4 | 6 | | | | |
| | Stephanie Wagner | 1 | 6 | 4 | | | | |
| | Stephanie Wagner | 1 | 6 | 4 | 2 | Kristína Kučová | 3 | 3 |
| | | | | | 7 | Mandy Minella | 6 | 6 |
| WC | Eva Lys | 5 | 4 | | 7 | Mandy Minella | 6 | 6 |
| 7 | Mandy Minella | 7 | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Marina Melnikova | 6 | 4 | | | | |
| | Noma Noha Akugue | 1 | 1$^r$ | | | | |
| | Noma Noha Akugue | 1 | 1$^r$ | 3 | Marina Melnikova | 6 | 6 |
| | | | | WC | Katharina Hobgarski | 4 | 0 |
| WC | Katharina Hobgarski | 6 | 6 | WC | Katharina Hobgarski | 4 | 0 |
| 8 | Paula Ormaechea | 1 | 3 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Elena-Gabriela Ruse | 6 | 6 | | | | |
| | Liang En-shuo | 2 | 1 | | | | |
| | Liang En-shuo | 2 | 1 | 4 | Elena-Gabriela Ruse | 6 | 6 |
| | | | | 5 | Isabella Shinikova | 3 | 3 |
| | Sina Herrmann | 4 | 2 | 5 | Isabella Shinikova | 3 | 3 |
| 5 | Isabella Shinikova | 6 | 6 | | | | |