2020 Erste Bank Open

The 2020 Erste Bank Open was a men's tennis tournament played on indoor hard courts. It was the 46th edition of the event, and part of the ATP Tour 500 Series of the 2020 ATP Tour. It was held at the Wiener Stadthalle in Vienna, Austria, from 26 October until 1 November 2020.

One seed Andrey Rublev won the singles title.

Seeds

 * Rankings are as of 19 October 2020

Other entrants
The following players received wildcards into the singles main draw:
 * 🇷🇸 Novak Djokovic
 * 🇦🇹 Dennis Novak
 * 🇦🇹 Jurij Rodionov
 * 🇮🇹 Jannik Sinner

The following player received entry using a special exempt:
 * 🇬🇧 Dan Evans

The following players received entry using a protected ranking into the singles main draw:
 * Kevin Anderson
 * 🇯🇵 Kei Nishikori

The following players received entry from the qualifying draw:
 * 🇭🇺 Attila Balázs
 * Aljaž Bedene
 * 🇸🇰 Norbert Gombos
 * 🇨🇦 Vasek Pospisil

The following players received entry as lucky losers:
 * Jason Jung
 * 🇺🇦 Vitaliy Sachko
 * 🇮🇹 Lorenzo Sonego

Withdrawals

 * 🇮🇹 Matteo Berrettini → replaced by 🇺🇸 Taylor Fritz
 * 🇮🇹 Fabio Fognini → replaced by 🇷🇸 Filip Krajinović
 * 🇧🇪 David Goffin → replaced by 🇩🇪 Jan-Lennard Struff
 * 🇺🇸 John Isner → replaced by Jason Jung
 * 🇯🇵 Kei Nishikori → replaced by 🇺🇦 Vitaliy Sachko
 * 🇨🇦 Milos Raonic → replaced by 🇵🇱 Hubert Hurkacz
 * 🇦🇷 Diego Schwartzman → replaced by 🇮🇹 Lorenzo Sonego

Seeds

 * Rankings are as of 19 October 2020

Other entrants
The following pairs received wildcards into the doubles main draw:
 * 🇦🇹 Dominic Thiem / 🇦🇹 Dennis Novak
 * 🇬🇧 Daniel Evans / 🇦🇹 Oliver Marach

The following pair received entry from the qualifying draw:
 * 🇵🇱 Karol Drzewiecki / 🇵🇱 Szymon Walków

Singles

 * 🇷🇺 Andrey Rublev def. 🇮🇹 Lorenzo Sonego, 6–4, 6–4

Doubles

 * 🇵🇱 Łukasz Kubot / 🇧🇷 Marcelo Melo def. 🇬🇧 Jamie Murray / 🇬🇧 Neal Skupski, 7–6(7–5), 7–5