ATP - Gstaad

The ATP tour continues in Switzerland.

2021 Swiss Open Gstaad - an ATP 250 tournament, on Clay, in Gstaad, Switzerland, 19-25 July 2021.

Event not held last year due to COVID-19

2019 champion (not defending):

Albert Ramos-Vinolas who defeated Cedrik-Marcel Stebe 6-3 6-2

The following players withdrew after entering but before the main draw was published:

- Facundo Bagnis replaced by Juan Ignacio Londero 

- Roberto Carballes Baena replaced by Tallon Griekspoor 

- Federico Coria replaced by Hugo Gaston 

- Norbert Gombos replaced by Dennis Novak 

- Philipp Kohlschreiber replaced by Alex Molcan

- Kamil Majchrzak replaced by Marc-Andrea Husler

- Dominic Thiem replaced by Arthur Rinderknech

- Jo-Wilfried Tsonga replaced by Marc Polmans

- Fernando Verdasco replaced by Thiago Seyboth Wild 

Denis Shapovalov, world number 10, is top seed.

The other 7 seeds are all in the top 90

The top four seeds have first round byes.