2020 ABN AMRO World Tennis Tournament – Singles

Defending champion Gaël Monfils defeated Félix Auger-Aliassime in the final, 6–2, 6–4 to win the singles tennis title at the 2020 Rotterdam Open.

Seeds
• #🇷🇺 Daniil Medvedev (first round)

• # Stefanos Tsitsipas (second round)

• #🇫🇷 Gaël Monfils (champion)

• #🇧🇪 David Goffin (second round)

• #🇮🇹 Fabio Fognini (first round)

• #🇪🇸 Roberto Bautista Agut (second round)

• #🇷🇺 Andrey Rublev (quarterfinals)

• #🇨🇦 Denis Shapovalov (first round)

Seeds
• # 🇭🇺 Márton Fucsovics (qualified)

• # 🇰🇿 Mikhail Kukushkin (qualified)

• # 🇩🇪 Philipp Kohlschreiber (qualified)

• # 🇫🇷 Grégoire Barrère (qualified)

• # 🇦🇹 Dennis Novak (first round)

• # 🇦🇺 Alexei Popyrin (qualifying competition)

• # 🇫🇮 Emil Ruusuvuori (qualifying competition)

• # 🇩🇪 Yannick Maden (qualifying competition)

Qualifiers
• # 🇭🇺 Márton Fucsovics

• # 🇰🇿 Mikhail Kukushkin

• # 🇩🇪 Philipp Kohlschreiber

• # 🇫🇷 Grégoire Barrère