2020 Hamburg European Open – Singles

Nikoloz Basilashvili was the two-time defending champion, but lost in the first round to Roberto Bautista Agut.

Andrey Rublev won the title, his third of the 2020 season, defeating Stefanos Tsitsipas in the final, 6–4, 3–6, 7–5. Tsitsipas served for the championship at 5–4 in the third set.

Seeds
• #🇷🇺 Daniil Medvedev (first round)

• # Stefanos Tsitsipas (final)

• #🇫🇷 Gaël Monfils (first round)

• #🇪🇸 Roberto Bautista Agut (quarterfinals)

• #🇷🇺 Andrey Rublev (champion)

• #🇮🇹 Fabio Fognini (second round)

• #🇦🇷 Diego Schwartzman (withdrew, still competing in Rome)

• #🇷🇺 Karen Khachanov (second round)

Seeds
• # 🇺🇸 Tennys Sandgren (qualified)

• # 🇯🇵 Yoshihito Nishioka (moved to main draw)

• # 🇫🇷 Gilles Simon (qualifying competition, lucky loser)

• # 🇰🇿 Alexander Bublik (qualifying competition, lucky loser)

• # 🇺🇸 Tommy Paul (qualified)

• # Pablo Cuevas (qualified)

• # 🇦🇷 Juan Ignacio Londero (first round)

• # 🇨🇿 Jiří Veselý (qualified)

Qualifiers
• # 🇺🇸 Tennys Sandgren

• # 🇨🇿 Jiří Veselý

• # Pablo Cuevas

• # 🇺🇸 Tommy Paul

Lucky losers
• # 🇫🇷 Gilles Simon

• # 🇰🇿 Alexander Bublik