title: 2021 Karlsruhe Open
text: # 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
  