2020 Hamburg European Open

The 2020 Hamburg European Open was a men's tennis tournament played on outdoor red clay courts. It was the 114th edition of the German Open Tennis Championships and part of the ATP Tour 500 series of the 2020 ATP Tour (called the Hamburg Open). Originally scheduled for 13 to 19 July 2020, but due to the ongoing COVID-19 pandemic, it was rescheduled from 20 to 27 September 2020 and took place at the Am Rothenbaum in Hamburg, Germany.

Seeds

 * 1 Rankings as of September 14, 2020.

Other entrants
The following players received wildcards into the main draw:
 * 🇩🇪 Yannick Hanfmann
 * 🇷🇺 Karen Khachanov
 * 🇩🇪 Philipp Kohlschreiber

The following player received entry as a special exempt into the main draw:
 * 🇩🇪 Dominik Koepfer

The following player used a protected ranking into the main draw:
 * Kevin Anderson

The following players received entry from the qualifying draw:
 * Pablo Cuevas
 * 🇺🇸 Tommy Paul
 * 🇺🇸 Tennys Sandgren
 * 🇨🇿 Jiří Veselý

The following players received entry as a lucky loser:
 * 🇰🇿 Alexander Bublik
 * 🇫🇷 Gilles Simon

Withdrawals

 * 🇮🇹 Matteo Berrettini → replaced by 🇫🇷 Ugo Humbert
 * 🇪🇸 Pablo Carreño Busta → replaced by 🇳🇴 Casper Ruud
 * 🇦🇺 Alex de Minaur → replaced by 🇩🇪 Jan-Lennard Struff
 * 🇧🇪 David Goffin → replaced by 🇪🇸 Albert Ramos Viñolas
 * 🇵🇱 Hubert Hurkacz → replaced by 🇮🇹 Lorenzo Sonego
 * 🇺🇸 John Isner → replaced by 🇫🇷 Adrian Mannarino
 * 🇦🇷 Diego Schwartzman → replaced by 🇰🇿 Alexander Bublik
 * 🇨🇦 Denis Shapovalov → replaced by 🇫🇷 Gilles Simon

Retirements

 * 🇫🇷 Benoît Paire (COVID-19)

Seeds

 * 1 Rankings as of September 14, 2020.

Other entrants
The following pairs received wildcard s into the doubles main draw:
 * 🇩🇪 Yannick Hanfmann / 🇩🇪 Mats Moraing
 * 🇩🇰 Frederik Nielsen / 🇩🇪 Tim Pütz

The following pair received entry from the qualifying draw:
 * 🇲🇩 Radu Albot / 🇵🇰 Aisam-ul-Haq Qureshi

The following pair received entry as lucky losers:
 * 🇩🇪 Marvin Möller / 🇩🇪 Milan Welte

Withdrawals

 * 🇪🇸 Marcel Granollers / 🇦🇷 Horacio Zeballos → replaced by 🇩🇪 Marvin Möller / 🇩🇪 Milan Welte

Retirements

 * 🇨🇴 Robert Farah / 🇨🇴 Juan Sebastián Cabal (COVID-19 reasons)

Singles

 * 🇷🇺 Andrey Rublev def. Stefanos Tsitsipas, 6–4, 3–6, 7–5

Doubles

 * 🇦🇺 John Peers / 🇳🇿 Michael Venus def. Ivan Dodig /  Mate Pavić, 6–3, 6–4