# 2023 Hamburg European Open – Men's singles

Alexander Zverev defeated Laslo Djere in the final, 7–5, 6–3 to win the men's singles tennis title at the 2023 Hamburg European Open in his hometown of Hamburg.
Lorenzo Musetti was the defending champion, but lost to Djere in the quarterfinals.

## Seeds

* Casper Ruud (quarterfinals)
* Andrey Rublev (second round)
* Lorenzo Musetti (quarterfinals)
* Alexander Zverev (champion)
* Francisco Cerúndolo (first round, retired)
* Tomás Martín Etcheverry (first round)
* Alejandro Davidovich Fokina (second round)
* Miomir Kecmanović (first 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 |
| | Arthur Fils | 2 | 4 | | | | |
| 4 | Alexander Zverev | 6 | 6 | | | | |
| 4 | Alexander Zverev | 6 | 6 | 4 | Alexander Zverev | 7 | 6 |
| | | | | | Laslo Djere | 5 | 3 |
| | Laslo Djere | 6 | 6 | | Laslo Djere | 5 | 3 |
| | Zhang Zhizhen | 3 | 2 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | C Ruud | 6 | 1 | 6 | | | | | | | | | | | | | |
| | S Báez | 3 | 6 | 3 | 1 | C Ruud | 1 | 6 | 6 | | | | | | | | |
| PR | H Dellien | 7$^7$ | 1 | 3 | Q | C Garín | 6 | 2 | 2 | | | | | | | | |
| Q | C Garín | 6$^3$ | 6 | 6 | | | | | | 1 | C Ruud | 0 | 4 | | | | |
| | A Fils | 7 | 7 | | | | | | | | A Fils | 6 | 6 | | | | |
| LL | DE Galán | 5 | 5 | | | A Fils | 7 | 7 | | | | | | | | | |
| | D Lajović | 3 | 6 | 6 | | D Lajović | 5 | 5 | | | | | | | | | |
| 8 | M Kecmanović | 6 | 4 | 3 | | | | | | | | | | | A Fils | 2 | 4 |
| 4 | A Zverev | 6 | 6 | | | | | | | | | | | 4 | A Zverev | 6 | 6 |
| | A Molčan | 0 | 3 | | 4 | A Zverev | 6 | 7 | | | | | | | | | |
| WC | M Marterer | 7$^7$ | 6 | | WC | M Marterer | 3 | 5 | | | | | | | | | |
| WC | R Molleker | 6$^2$ | 2 | | | | | | | 4 | A Zverev | 6 | 6 | | | | |
| | L Van Assche | 7$^7$ | 6 | | | | | | | | L Van Assche | 3 | 4 | | | | |
| | A Müller | 6$^3$ | 4 | | | L Van Assche | 3 | 7$^7$ | 6 | | | | | | | | |
| | P Cachin | 6 | 5 | 2 | 7 | A Davidovich Fokina | 6 | 6$^5$ | 4 | | | | | | | | |
| 7 | A Davidovich Fokina | 2 | 7 | 6 | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 6 | TM Etcheverry | 6$^2$ | 3 | | | | | | | | | | | | | |
| | L Djere | 7$^7$ | 6 | | | L Djere | 6 | 3 | 6 | | | | | | | |
| LL | T Monteiro | 3 | 6 | 4 | PR | G Pella | 2 | 6 | 3 | | | | | | | |
| PR | G Pella | 6 | 4 | 6 | | | | | | | L Djere | 7 | 6 | | | |
| Q | T Seyboth Wild | 6$^6$ | 4 | | | | | | | 3 | L Musetti | 5 | 3 | | | |
| LL | J Kovalík | 7$^8$ | 6 | | LL | J Kovalík | 6 | 2 | 4 | | | | | | | |
| Q | E Ymer | 4 | 1 | | 3 | L Musetti | 3 | 6 | 6 | | | | | | | |
| 3 | L Musetti | 6 | 6 | | | | | | | | | | | L Djere | 6 | 6 |
| 5 | F Cerúndolo | 6 | 2 | 2$^r$ | | | | | | | | | | Z Zhang | 3 | 2 |
| | Y Hanfmann | 4 | 6 | 4 | | Y Hanfmann | 6 | 1 | 4 | | | | | | | |
| Q | J Choinski | 4 | 5 | | | Z Zhang | 4 | 6 | 6 | | | | | | | |
| | Z Zhang | 6 | 7 | | | | | | | | Z Zhang | 6 | 6 | | | |
| | D Altmaier | 7 | 6 | | | | | | | | D Altmaier | 4 | 4 | | | |
| | R Gasquet | 5 | 4 | | | D Altmaier | 6 | 6 | | | | | | | | |
| | B Zapata Miralles | 7 | 1 | 6$^7$ | 2/WC | A Rublev | 2 | 2 | | | | | | | | |
| 2/WC | A Rublev | 5 | 6 | 7$^9$ | | | | | | | | | | | | |

## Qualifying
### Seeds

* Daniel Elahi Galán (qualifying competition, lucky loser)
* Pavel Kotov (first round)
* Cristian Garín (qualified)
* Thiago Seyboth Wild (qualified)
* Thiago Monteiro (qualifying competition, lucky loser)
* Thiago Agustín Tirante (first round)
* Jan Choinski (qualified)
* Ivan Gakhov (first round)

### Qualifiers

* Jan Choinski
* Elias Ymer
* Cristian Garín
* Thiago Seyboth Wild

### Lucky losers

* Daniel Elahi Galán
* Thiago Monteiro
* Jozef Kovalík

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Daniel Elahi Galán | 4 | 7$^7$ | 6 | | | | | |
| WC | Max Hans Rehberg | 6 | 6$^5$ | 3 | | | | | |
| WC | Max Hans Rehberg | 6 | 6$^5$ | 3 | 1 | Daniel Elahi Galán | 1 | 6 | 4 |
| | | | | | 7 | Jan Choinski | 6 | 4 | 6 |
| WC | Marvin Möller | 3 | 4 | | 7 | Jan Choinski | 6 | 4 | 6 |
| 7 | Jan Choinski | 6 | 6 | | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Pavel Kotov | 3 | 7 | 4 | | | |
| | Jozef Kovalík | 6 | 5 | 6 | | | |
| | Jozef Kovalík | 6 | 5 | 6 | Jozef Kovalík | 3 | 3 |
| | | | | | Elias Ymer | 6 | 6 |
| | Elias Ymer | 6 | 6 | | Elias Ymer | 6 | 6 |
| 8 | Ivan Gakhov | 3 | 2 | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Cristian Garín | 6 | 6 | | | | | |
| WC | Marko Topo | 3 | 4 | | | | | |
| WC | Marko Topo | 3 | 4 | 3 | Cristian Garín | 2 | 6 | 7$^7$ |
| | | | | | Kimmer Coppejans | 6 | 3 | 6$^5$ |
| | Kimmer Coppejans | 6 | 7$^7$ | | Kimmer Coppejans | 6 | 3 | 6$^5$ |
| 6 | Thiago Agustín Tirante | 1 | 6$^4$ | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Thiago Seyboth Wild | 6 | 6 | | | | |
| | Andrea Collarini | 4 | 4 | | | | |
| | Andrea Collarini | 4 | 4 | 4 | Thiago Seyboth Wild | 6 | 6 |
| | | | | 5 | Thiago Monteiro | 4 | 3 |
| Alt | Renzo Olivo | 6$^2$ | 0$^r$ | 5 | Thiago Monteiro | 4 | 3 |
| 5 | Thiago Monteiro | 7$^7$ | 0 | | | | |