ATP - Queens 1R start

First round commenced at Queens.

2021 cinch Championships - an ATP 500 tournament, on Grass, in London, United Kingdom, 14-20 June 2021.

Event not held last year due to COVID-19

Defending champion (2019):

Wildcard Feliciano Lopez who defeated Gilles Simon 6-2 6-7(4) 7-6(2)

Filip Krajinovic withdrew after the main draw was published due to illness, and was replaced by lucky loser Alejandro Tabilo.

First round results:

- Adrian Mannarino defeated wildcard Liam Broady 6-4 6-4

- John Millman defeated Reilly Opelka 7-6(4) 5-7 7-6(6)

- Aslan Karatsev (5) defeated lucky loser Alejandro Tabilo 3-6 6-4 6-2

- Cameron Norrie defeated Albert Ramos- Vinolas 4-6 6-3 6-4

- Wildcard Jack Draper defeated Jannik Sinner (3) 7-6(6) 7-6(2)

- Qualifier Viktor Troicki defeated Lorenzo Sonego (7) 6-4 6-4

- Feliciano Lopez defeated qualifier Illya Marchenko 6-1 7-6(6)