# 2021 Queen's Club Championships – Singles

Matteo Berrettini defeated Cameron Norrie in the final, 6–4, 6–7$^{(5–7)}$, 6–3, to win the singles tennis title at the 2021 Queen's Club Championships. Berrettini's win earned him his fourth career ATP Tour singles title, his first ATP 500 victory, and also made him the first player to win the tournament on their main draw debut since Boris Becker in 1985. Norrie was contesting for his first title in his fourth career final.
Feliciano López was the defending champion from when the event was last held in 2019, but he lost in the second round to Denis Shapovalov.

## Seeds

* Matteo Berrettini (champion)
* Denis Shapovalov (semifinals)
* Jannik Sinner (first round)
* Alex de Minaur (semifinals)
* Aslan Karatsev (second round)
* Dan Evans (quarterfinals)
* Lorenzo Sonego (first round)
* Fabio Fognini (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Matteo Berrettini | 6 | 6 | | | | | |
| 4 | Alex de Minaur | 4 | 4 | | | | | |
| 4 | Alex de Minaur | 4 | 4 | 1 | Matteo Berrettini | 6 | 6$^5$ | 6 |
| | | | | | Cameron Norrie | 4 | 7$^7$ | 3 |
| | Cameron Norrie | 7 | 6 | | Cameron Norrie | 4 | 7$^7$ | 3 |
| 2 | Denis Shapovalov | 5 | 3 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | M Berrettini | 7$^7$ | 7$^7$ | | | | | | | | | | | | | | |
| | S Travaglia | 6$^5$ | 6$^4$ | | 1 | M Berrettini | 6 | 6 | | | | | | | | | |
| | B Paire | 3 | 2 | | WC | A Murray | 3 | 3 | | | | | | | | | |
| WC | A Murray | 6 | 6 | | | | | | 1 | M Berrettini | 7$^7$ | 6 | | | | | |
| WC | L Broady | 4 | 4 | | | | | | 6 | D Evans | 6$^5$ | 3 | | | | | |
| | A Mannarino | 6 | 6 | | | A Mannarino | 4 | 6$^7$ | | | | | | | | | |
| | A Popyrin | 4 | 4 | | 6 | D Evans | 6 | 7$^9$ | | | | | | | | | |
| 6 | D Evans | 6 | 6 | | | | | | | | | | | 1 | M Berrettini | 6 | 6 |
| 4 | A de Minaur | 3 | 6 | 6 | | | | | | | | | | 4 | A de Minaur | 4 | 4 |
| | L Đere | 6 | 3 | 4 | 4 | A de Minaur | 6 | 6 | | | | | | | | | |
| | R Opelka | 6$^4$ | 7 | 6$^6$ | | J Millman | 1 | 3 | | | | | | | | | |
| | J Millman | 7$^7$ | 5 | 7$^8$ | | | | | 4 | A de Minaur | 3 | 6 | 6 | | | | |
| | M Čilić | 6 | 6$^5$ | 7$^7$ | | | | | | M Čilić | 6 | 3 | 4 | | | | |
| Q | S Ofner | 2 | 7$^7$ | 6$^4$ | | M Čilić | 6 | 7$^7$ | | | | | | | | | |
| PR | Y-h Lu | 4 | 6$^3$ | | 8 | F Fognini | 3 | 6$^4$ | | | | | | | | | |
| 8 | F Fognini | 6 | 7$^7$ | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | A Karatsev | 3 | 6 | 6 | | | | | | | | | | | | |
| LL | A Tabilo | 6 | 4 | 2 | 5 | A Karatsev | 5 | 2 | | | | | | | | |
| | C Norrie | 4 | 6 | 6 | | C Norrie | 7 | 6 | | | | | | | | |
| | A Ramos Viñolas | 6 | 3 | 4 | | | | | | C Norrie | 6 | 6 | | | | |
| | A Bublik | 6 | 3 | 6 | | | | | WC | J Draper | 3 | 3 | | | | |
| | J Chardy | 4 | 6 | 3 | | A Bublik | 6$^5$ | 6$^0$ | | | | | | | | |
| WC | J Draper | 7$^8$ | 7$^7$ | | WC | J Draper | 7$^7$ | 7$^7$ | | | | | | | | |
| 3 | J Sinner | 6$^6$ | 6$^2$ | | | | | | | | | | | C Norrie | 7 | 6 |
| 7 | L Sonego | 4 | 4 | | | | | | | | | | 2 | D Shapovalov | 5 | 3 |
| Q | V Troicki | 6 | 6 | | Q | V Troicki | 3 | 6$^3$ | | | | | | | | |
| | A Bedene | 6 | 3 | 4 | | F Tiafoe | 6 | 7$^7$ | | | | | | | | |
| | F Tiafoe | 4 | 6 | 6 | | | | | | F Tiafoe | 3 | 4 | | | | |
| | F López | 6 | 7$^8$ | | | | | | 2 | D Shapovalov | 6 | 6 | | | | |
| Q | I Marchenko | 1 | 6$^6$ | | | F López | 2 | 3 | | | | | | | | |
| Q | A Vukic | 6$^6$ | 6$^6$ | | 2 | D Shapovalov | 6 | 6 | | | | | | | | |
| 2 | D Shapovalov | 7$^8$ | 7$^8$ | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Lucas Pouille (first round)
* Bernabé Zapata Miralles (qualifying competition)
* Botic van de Zandschulp (first round)
* Marc-Andrea Hüsler (first round)
* Jason Jung (first round)
* Illya Marchenko (qualified)
* Alejandro Tabilo (qualifying competition, lucky loser)
* Sebastian Ofner (qualified)

### Qualifiers

* Viktor Troicki
* Sebastian Ofner
* Illya Marchenko
* Aleksandar Vukic

### Lucky loser

* Alejandro Tabilo

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Lucas Pouille | 4 | 7$^7$ | 4 | | | | |
| | Viktor Troicki | 6 | 6$^5$ | 6 | | | | |
| | Viktor Troicki | 6 | 6$^5$ | 6 | | Viktor Troicki | 6 | 6 |
| | | | | | 7 | Alejandro Tabilo | 4 | 3 |
| | Roberto Marcora | 3 | 5 | | 7 | Alejandro Tabilo | 4 | 3 |
| 7 | Alejandro Tabilo | 6 | 7 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Bernabé Zapata Miralles | 6 | 6 | | | | | |
| WC | Stuart Parker | 3 | 4 | | | | | |
| WC | Stuart Parker | 3 | 4 | | 2 | Bernabé Zapata Miralles | 1 | 4 |
| | | | | | 8 | Sebastian Ofner | 6 | 6 |
| | Lukáš Rosol | 2 | 6 | 3 | 8 | Sebastian Ofner | 6 | 6 |
| 8 | Sebastian Ofner | 6 | 3 | 6 | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Botic van de Zandschulp | 2 | 6 | 6$^4$ | | | | |
| WC | James Ward | 6 | 4 | 7$^7$ | | | | |
| WC | James Ward | 6 | 4 | 7$^7$ | WC | James Ward | 4 | 6$^4$ |
| | | | | | 6 | Illya Marchenko | 6 | 7$^7$ |
| | Ruben Bemelmans | 3 | 6 | 2 | 6 | Illya Marchenko | 6 | 7$^7$ |
| 6 | Illya Marchenko | 6 | 1 | 6 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Marc-Andrea Hüsler | 6 | 5 | 4 | | | | | |
| WC | Ryan Peniston | 4 | 7 | 6 | | | | | |
| WC | Ryan Peniston | 4 | 7 | 6 | WC | Ryan Peniston | 6 | 6$^8$ | 4 |
| | | | | | | Aleksandar Vukic | 4 | 7$^{10}$ | 6 |
| | Aleksandar Vukic | 7$^7$ | 7$^{10}$ | | | Aleksandar Vukic | 4 | 7$^{10}$ | 6 |
| 5 | Jason Jung | 6$^4$ | 6$^8$ | | | | | | |