# 2023 Halle Open – Singles

Alexander Bublik defeated Andrey Rublev in the final, 6–3, 3–6, 6–3 to win the singles tennis title at the 2023 Halle Open.
Hubert Hurkacz was the defending champion, but lost in the second round to Tallon Griekspoor.

## Seeds

* Daniil Medvedev (quarterfinals)
* Stefanos Tsitsipas (second round)
* Andrey Rublev (final)
* Jannik Sinner (quarterfinals, retired)
* Félix Auger-Aliassime (withdrew)
* Hubert Hurkacz (second round)
* Borna Ćorić (first round)
* Roberto Bautista Agut (semifinals)
* Alexander Zverev (semifinals)

## 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 |
| 8 | Roberto Bautista Agut | 3 | 4 | | | | | |
| 3 | Andrey Rublev | 6 | 6 | | | | | |
| 3 | Andrey Rublev | 6 | 6 | 3 | Andrey Rublev | 3 | 6 | 3 |
| | | | | | Alexander Bublik | 6 | 3 | 6 |
| | Alexander Bublik | 6 | 7 | | Alexander Bublik | 6 | 3 | 6 |
| 9 | Alexander Zverev | 3 | 5 | | | | | |

### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | D Medvedev | 6 | 6 | | | | | | | | | | | | | | | |
| Q | M Giron | 4 | 3 | | 1 | D Medvedev | 6 | 6$^5$ | 6 | | | | | | | | | |
| WC | O Otte | 6$^3$ | 3 | | | L Djere | 3 | 7$^7$ | 3 | | | | | | | | | |
| | L Djere | 7$^7$ | 6 | | | | | | | 1 | D Medvedev | 5 | 6$^3$ | | | | | |
| | M Ymer | 6 | 4 | 5 | | | | | | 8 | R Bautista Agut | 7 | 7$^7$ | | | | | |
| | B Nakashima | 4 | 6 | 7 | | B Nakashima | 5 | 6$^2$ | | | | | | | | | | |
| LL | A Vavassori | 3 | 4 | | 8 | R Bautista Agut | 7 | 7$^7$ | | | | | | | | | | |
| 8 | R Bautista Agut | 6 | 6 | | | | | | | | | | | | 8 | R Bautista Agut | 3 | 4 |
| 3 | A Rublev | 6 | 6$^5$ | 6 | | | | | | | | | | | 3 | A Rublev | 6 | 6 |
| | Y Wu | 4 | 7$^7$ | 2 | 3 | A Rublev | 7$^8$ | 6 | | | | | | | | | | |
| Q | L Wessels | 4 | 6 | 3 | WC | Y Hanfmann | 6$^6$ | 3 | | | | | | | | | | |
| WC | Y Hanfmann | 6 | 3 | 6 | | | | | | 3 | A Rublev | 3 | 6 | 6 | | | | |
| | T Griekspoor | 6 | 7 | | | | | | | | T Griekspoor | 6 | 3 | 4 | | | | |
| | R Carballés Baena | 2 | 5 | | | T Griekspoor | 6 | 1 | 7$^{10}$ | | | | | | | | | |
| Q | C Eubanks | 4 | 7$^{13}$ | 3 | 6 | H Hurkacz | 3 | 6 | 6$^8$ | | | | | | | | | |
| 6 | H Hurkacz | 6 | 6$^{11}$ | 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 | Semifinals |
| 7 | B Ćorić | 3 | 1 | | | | | | | | | | | | | | |
| | A Bublik | 6 | 6 | | | A Bublik | 6 | 6$^4$ | 6 | | | | | | | | |
| Q | R Safiullin | 1 | 6$^4$ | | | J-L Struff | 3 | 7$^7$ | 3 | | | | | | | | |
| | J-L Struff | 6 | 7$^7$ | | | | | | | | A Bublik | 7 | 2 | | | | |
| | L Sonego | 6 | 3 | 6 | | | | | | 4 | J Sinner | 5 | 0$^r$ | | | | |
| LL | A Karatsev | 2 | 6 | 2 | | L Sonego | 7$^7$ | 4 | 4 | | | | | | | | |
| | R Gasquet | 3 | 7 | 2 | 4 | J Sinner | 6$^4$ | 6 | 6 | | | | | | | | |
| 4 | J Sinner | 6 | 5 | 6 | | | | | | | | | | | A Bublik | 6 | 7 |
| 9 | A Zverev | 6 | 6 | | | | | | | | | | | 9 | A Zverev | 3 | 5 |
| WC | D Thiem | 3 | 4 | | 9 | A Zverev | 6 | 6 | | | | | | | | | |
| | D Shapovalov | 7$^7$ | 6 | | | D Shapovalov | 2 | 4 | | | | | | | | | |
| PR | L Harris | 6$^1$ | 4 | | | | | | | 9 | A Zverev | 7 | 6 | | | | |
| | N Jarry | 6 | 7 | | | | | | | | N Jarry | 5 | 3 | | | | |
| | C Moutet | 3 | 5 | | | N Jarry | 7$^9$ | 7 | | | | | | | | | |
| | G Barrère | 7$^8$ | 4 | 6$^3$ | 2/WC | S Tsitsipas | 6$^7$ | 5 | | | | | | | | | |
| 2/WC | S Tsitsipas | 6$^6$ | 6 | 7$^7$ | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Aslan Karatsev (qualifying competition, lucky loser)
* Zhang Zhizhen (first round)
* Marcos Giron (qualified)
* Daniel Altmaier (qualifying competition, retired)
* Max Purcell (withdrew)
* Luca Van Assche (first round)
* Christopher Eubanks (qualified)
* Benjamin Bonzi (first round)

### Qualifiers

* Roman Safiullin
* Louis Wessels
* Marcos Giron
* Christopher Eubanks

### Lucky losers

* Andrea Vavassori
* Aslan Karatsev

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Aslan Karatsev | 4 | 6 | 7 | | | | |
| WC | Maximilian Marterer | 6 | 3 | 5 | | | | |
| WC | Maximilian Marterer | 6 | 3 | 5 | 1 | Aslan Karatsev | 6$^4$ | 3 |
| | | | | | | Roman Safiullin | 7$^7$ | 6 |
| | Roman Safiullin | 6 | 7 | | | Roman Safiullin | 7$^7$ | 6 |
| 8 | Benjamin Bonzi | 0 | 5 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Zhang Zhizhen | 4 | 2 | | | | | |
| WC | Louis Wessels | 6 | 6 | | | | | |
| WC | Louis Wessels | 6 | 6 | WC | Louis Wessels | 6 | 3 | 6 |
| | | | | WC | Henri Squire | 3 | 6 | 3 |
| WC | Henri Squire | 6 | 6 | WC | Henri Squire | 3 | 6 | 3 |
| 6 | Luca Van Assche | 2 | 2 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Marcos Giron | 6 | 6 | | | | | |
| Alt | Pavel Kotov | 4 | 4 | | | | | |
| Alt | Pavel Kotov | 4 | 4 | 3 | Marcos Giron | 7$^7$ | 1 | 6 |
| | | | | Alt | Andrea Vavassori | 6$^2$ | 6 | 1 |
| | Radu Albot | 4 | 4 | Alt | Andrea Vavassori | 6$^2$ | 6 | 1 |
| Alt | Andrea Vavassori | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Daniel Altmaier | 7$^7$ | 6 | | | | | |
| | Borna Gojo | 6$^5$ | 3 | | | | | |
| | Borna Gojo | 6$^5$ | 3 | | 4 | Daniel Altmaier | 3 | 3$^r$ |
| | | | | | 7 | Christopher Eubanks | 6 | 2 |
| | Hugo Gaston | 7$^7$ | 6$^5$ | 3 | 7 | Christopher Eubanks | 6 | 2 |
| 7 | Christopher Eubanks | 6$^4$ | 7$^7$ | 6 | | | | |