ATP - Hamburg 1R complete

First round completed in Hamburg.

2021 Hamburg European Open - an ATP 500 tournament, on Clay, in Hamburg, Germany, 12-18 July 2021.

Event held last year from 20-27 September 2020 due to COVID-19.

2020 champion (not defending):

Andrey Rublev (5) who defeated Stefanos Tsitsipas (2) 6-4 3-6 7-5

The following players withdrew after the main draw was published:

Pablo Andujar replaced by lucky loser Sumit Nagal 

Aljaz Bedene replaced by lucky loser Sébastian Baez 

First round results:

- Dominik Koepfer defeated qualifier Maximilian Marterer 7-6(2) 2-6 7-6(4)

- Filip Krajinovic (6) defeated wildcard Daniel Altmaier 6-3 6-7(3) 6-1

- Laslo Djere defeated Jan-Lennard Struff (7) 6-4 7-5

- Qualifier Juan Pablo Varillas defeated lucky loser Sumit Nagal 6-0 6-4

- Federico Delbonis defeated qualifier Zhang Zhizhen 6-1 5-7 6-4

- Dusan Lajovic (5) defeated Lucas Pouille 6-4 6-4

- Qualifier Alex Molcan defeated Gianluca Mager 4-6 6-4 7-6(3)

- Qualifier Carlos Taberner defeated Feliciano Lopez 6-4 3-6 6-3