2021 Karlsruhe Open
# 2021 Karlsruhe Open

The 2021 Karlsruhe Open (also known as the Liqui Moly Open for sponsorship reasons) was a professional tennis tournament played on outdoor clay courts. It was the 2nd edition of the tournament and part of the 2021 WTA 125K series, offering a total of $115,000 in prize money. It took place in Karlsruhe, Germany between 7 and 12 September 2021. The tournament did not take place in 2020 due to the COVID-19 pandemic.

## Champions

### Singles

* Mayar Sherif def. Martina Trevisan, 6–3, 6–2

### Doubles

* Irina Bara / Ekaterine Gorgodze def. Katarzyna Piter / Mayar Sherif, 6–3, 2–6, [10–7]

## Singles main draw entrants

### Seeds

| Country | Player | $Rank^1$ | Seed |
| - | - | - | - |
| FRA | Clara Burel | 92 | 1 |
| SVK | Anna Karolína Schmiedlová | 93 | 2 |
| EGY | Mayar Sherif | 96 | 3 |
| ITA | Martina Trevisan | 106 | 4 |
| SLO | Kaja Juvan | 109 | 5 |
| BEL | Maryna Zanevska | 113 | 6 |
| AUS | Astra Sharma | 114 | 7 |
| ROU | Irina Bara | 118 | 8 |

* $^1$ Rankings as of 30 August 2021.

### Other entrants

The following players received a wildcard into the singles main draw:

* Sina Herrmann
* Tatjana Maria
* Nastasja Schunk
* Alexandra Vecic

The following players qualified into the singles main draw:

* Giulia Gatto-Monticone
* Katharina Hobgarski
* Yana Morderger
* Tereza Mrdeža

### Withdrawals

**Before the tournament**

* Ana Bogdan → replaced by Maddison Inglis
* Elisabetta Cocciaretto → replaced by Jaqueline Cristian
* Varvara Gracheva → replaced by Paula Ormaechea
* Polona Hercog → replaced by Ekaterine Gorgodze
* Kristína Kučová → replaced by Rebecca Šramková
* Varvara Lepchenko → replaced by Grace Min
* Jasmine Paolini → replaced by Lucia Bronzetti
* Nuria Párrizas Díaz → replaced by Katarina Zavatska
* Kristýna Plíšková → replaced by Tamara Korpatsch
* Arantxa Rus → replaced by Anastasia Gasanova
* Elena-Gabriela Ruse → replaced by Dalma Gálfi
* Viktoriya Tomova → replaced by Cristina Bucșa
* Zhang Shuai → replaced by Katarzyna Kawa

## Doubles entrants

### Seeds

| Country | Player | Country | Player | $Rank^1$ | Seed |
| - | - | - | - | - | - |
| AUS | Astra Sharma | NED | Rosalie van der Hoek | 218 | 1 |
| GER | Vivian Heisen | BEL | Kimberley Zimmermann | 232 | 2 |
| POL | Katarzyna Piter | EGY | Mayar Sherif | 271 | 3 |
| ROU | Irina Bara | GEO | Ekaterine Gorgodze | 286 | 4 |

* $^1$ Rankings as of 30 August 2021.

### Other entrants

The following pair received a wildcard into the doubles main draw:

* Nastasja Schunk / Alexandra Vecic
