ATP - Vienna 1R start

First round commenced in Vienna.

2023 Erste Bank Open, an ATP 500 tournament, on Hard Indoor, Vienna, Austria, 23-29 October 2023.

Defending champion:

Daniil Medvedev (1) who defeated Denis Shapovalov 4-6 6-3 6-2

Mackenzie McDonald withdrew after the main draw published, and was replaced by lucky loser Lorenzo Sonego.

First round results:

- Jiri Lehecka defeated J.J. Wolf 6-4 6-4

- Karen Khachanov (8) defeated Roman Safiullin 6-4 6-4

- Alexander Zverev (5) defeated wildcard Sebastian Ofner 6-4 6-1

- Cameron Norrie defeated qualifier Filip Misolic 7-6(7) 4-6 6-3

- Matteo Arnaldi defeated qualifier Albert Ramos-Vinolas 7-6(4) 7-6(2)