ATP - Washington D.C.

The ATP tour continues in the USA.

2021 Citi Open - an ATP 500 tournament, on Hard, in Washington D.C., USA, 31 July - 8 August 2021.

Event not held last year due to COVID-19

Defending champion (2019):

Nick Kyrgios who defeated Daniil Medvedev (3) 7-6(6) 7-6(4)

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

- Hubert Hurkacz replaced by Emil Ruusuvuori 

- John Isner replaced by Andreas Seppi 

- Aslan Karatsev replaced by Daniel Elahi Galan 

- Karen Khachanov replaced by Mackenzie McDonald 

- Dominik Koepfer replaced by Ilya Ivashka 

- Soonwoo Kwon replaced by James Duckworth 

- Jaume Munar replaced by Kevin Anderson 

- Guido Pella replaced by Steve Johnson 

- Albert Ramos-Vinolas replaced by Jordan Thompson  

- Milos Raonic replaced by Ricardas Berankis 

- Denis Shapovalov replaced by Egor Gerasimov 

Wildcard Rafael Nadal, world number 3, is top seed.

The other 15 seeds are all in the top 59

All sixteen seeds have first round byes.