2020 İstanbul Cup

The 2020 İstanbul Cup (also known as the TEB BNP Paribas Tennis Championship İstanbul for sponsorship reasons) was a tennis tournament played on outdoor clay courts. It was the 13th edition of the İstanbul Cup, and part of the WTA International tournaments of the 2020 WTA Tour. It took place in Istanbul, Turkey, from 8 through 13 September 2020.

Seeds

 * Rankings are as of August 31, 2020.

Other entrants
The following players received wildcard s into the singles main draw:
 * 🇹🇷 Çağla Büyükakçay
 * 🇹🇷 Berfu Cengiz
 * 🇹🇷 Pemra Özgen

The following players received entry using a protected ranking into the singles main draw:
 * 🇺🇦 Kateryna Bondarenko
 * 🇸🇰 Anna Karolína Schmiedlová

The following players received entry from the qualifying draw:
 * 🇨🇦 Eugenie Bouchard
 * 🇷🇸 Olga Danilović
 * 🇨🇿 Tereza Martincová
 * 🇦🇺 Ellen Perez

Withdrawals

 * Before the tournament
 * 🇨🇿 Marie Bouzková → replaced by 🇺🇦 Kateryna Bondarenko
 * 🇷🇴 Sorana Cîrstea → replaced by 🇧🇪 Greet Minnen
 * Hsieh Su-wei → replaced by 🇷🇴 Patricia Maria Țig
 * 🇷🇺 Veronika Kudermetova → replaced by 🇷🇺 Margarita Gasparyan
 * 🇵🇱 Magda Linette → replaced by 🇧🇾 Aliaksandra Sasnovich
 * 🇧🇪 Elise Mertens → replaced by 🇺🇦 Katarina Zavatska
 * 🇫🇷 Kristina Mladenovic → replaced by 🇮🇹 Jasmine Paolini
 * Jeļena Ostapenko → replaced by 🇸🇰 Viktória Kužmová
 * 🇰🇿 Yulia Putintseva → replaced by Stefanie Vögele
 * Anastasija Sevastova → replaced by Kaja Juvan
 * 🇩🇪 Laura Siegemund → replaced by 🇧🇬 Viktoriya Tomova
 * 🇦🇺 Ajla Tomljanović → replaced by 🇲🇪 Danka Kovinić
 * Tamara Zidanšek → replaced by 🇸🇰 Anna Karolína Schmiedlová

Seeds

 * 1 Rankings as of August 31, 2020.

Other entrants
The following pairs received wildcard s into the doubles main draw: The following pair received entry as alternates:
 * 🇹🇷 Ayla Aksu / 🇹🇷 İpek Öz
 * 🇨🇦 Eugenie Bouchard / 🇹🇷 Başak Eraydın
 * 🇸🇰 Anna Karolína Schmiedlová / 🇺🇦 Katarina Zavatska

Withdrawals

 * Before the tournament
 * 🇬🇧 Heather Watson

Singles

 * 🇷🇴 Patricia Maria Țig def. 🇨🇦 Eugenie Bouchard 2–6, 6–1, 7–6(7–4)

Doubles

 * Alexa Guarachi / 🇺🇸 Desirae Krawczyk def. 🇦🇺 Ellen Perez / 🇦🇺 Storm Sanders, 6–1, 6–3