2021 European Open – Singles
Ugo Humbert was the defending champion, but chose not to participate this year. Jannik Sinner won the title, defeating Diego Schwartzman in the final, 6–2, 6–2. Seeds
The top four seeds received a bye into the second round. Draw

Finals

Top half

Bottom half

Qualifying

Seeds

Qualifiers

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

References

External links
 Main draw
 Qualifying draw

2021 ATP Tour
2021 Singles