2020 J&T Banka Ostrava Open – Singles

This was the first edition of the tournament, primarily organised due to the cancellation of many tournaments during the 2020 season, because of the ongoing COVID-19 pandemic.

Aryna Sabalenka won the title, defeating Victoria Azarenka in the final, 6–2, 6–2. The final of this event was the first WTA singles final to be contested between two Belarusian players. Sabalenka won the title after being 6–0, 4–0 down, and facing break points to go 5–0 down, in her quarterfinal match against Sara Sorribes Tormo. After losing 10 games in a row, Sabalenka then won 12 games in a row.

Seeds
The top four seeds received a bye into the second round. • # 🇺🇦 Elina Svitolina (second round)

• # 🇨🇿 Karolína Plíšková (second round)

• # 🇧🇾 Aryna Sabalenka (champion)

• # 🇧🇾 Victoria Azarenka (final)

• # Petra Martić (first round)

• # 🇰🇿 Elena Rybakina (first round)

• # 🇧🇪 Elise Mertens (quarterfinals)

• # 🇪🇪 Anett Kontaveit (second round)

Seeds
• # 🇷🇺 Veronika Kudermetova (qualified)

• # 🇨🇿 Marie Bouzková (qualifying competition)

• # 🇺🇸 Coco Gauff (qualified)

• # Jil Teichmann (qualifying competition)

• # 🇷🇺 Anna Blinkova (qualifying competition, retired)

• # 🇺🇸 Bernarda Pera (first round)

• # 🇪🇸 Paula Badosa (qualifying competition)

• # Arantxa Rus (qualifying competition)

• # 🇪🇸 Sara Sorribes Tormo (qualified)

• # 🇷🇺 Daria Kasatkina (qualified)

• # 🇷🇴 Irina-Camelia Begu (qualifying competition)

• # 🇨🇿 Barbora Krejčíková (qualified)

Qualifiers
• # 🇷🇺 Veronika Kudermetova

• # 🇷🇺 Daria Kasatkina

• # 🇺🇸 Coco Gauff

• # 🇨🇿 Barbora Krejčíková

• # 🇪🇸 Sara Sorribes Tormo

• # 🇨🇿 Tereza Martincová