# 2023 Swiss Indoors – Singles

Defending champion Félix Auger-Aliassime defeated Hubert Hurkacz in the final, 7–6$^{(7–3)}$, 7–6$^{(7–5)}$ to win the singles tennis title at the 2023 Swiss Indoors. He saved a match point en route to his fifth career ATP Tour title (and his first in a year), in the quarterfinals against Alexander Shevchenko.

## Seeds

* Holger Rune (semifinals)
* Casper Ruud (second round)
* Taylor Fritz (second round)
* Hubert Hurkacz (final)
* Alex de Minaur (second round)
* Félix Auger-Aliassime (champion)
* Nicolás Jarry (second round)
* Sebastian Korda (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 | Semifinals | Final | Final | Final | Final |
| 1 | Holger Rune | 3 | 2 | | | | | |
| 6/WC | Félix Auger-Aliassime | 6 | 6 | | | | | |
| 6/WC | Félix Auger-Aliassime | 6 | 6 | | 6/WC | Félix Auger-Aliassime | 7$^7$ | 7$^7$ |
| | | | | | 4 | Hubert Hurkacz | 6$^3$ | 6$^5$ |
| 4 | Hubert Hurkacz | 6 | 3 | 7$^7$ | 4 | Hubert Hurkacz | 6$^3$ | 6$^5$ |
| | Ugo Humbert | 4 | 6 | 6$^5$ | | | | |

### 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 | H Rune | 1 | 7 | 6 | | | | | | | | | | | | | | |
| | M Kecmanović | 6 | 5 | 3 | 1 | H Rune | 7$^7$ | 6 | | | | | | | | | | |
| Q | C O'Connell | 7$^7$ | 4 | 3 | | S Báez | 6$^2$ | 1 | | | | | | | | | | |
| | S Báez | 6$^3$ | 6 | 6 | | | | | | 1 | H Rune | 6 | 3 | 7$^8$ | | | | |
| | A Murray | 7 | 6 | | | | | | | | TM Etcheverry | 1 | 6 | 6$^6$ | | | | |
| | Y Hanfmann | 5 | 4 | | | A Murray | 7$^7$ | 3 | 2 | | | | | | | | | |
| | TM Etcheverry | 6 | 1 | 6 | | TM Etcheverry | 6$^5$ | 6 | 6 | | | | | | | | | |
| 8 | S Korda | 3 | 6 | 3 | | | | | | | | | | | 1 | H Rune | 3 | 2 |
| 3 | T Fritz | 7$^9$ | 7$^7$ | | | | | | | | | | | | 6/WC | F Auger-Aliassime | 6 | 6 |
| | M Purcell | 6$^7$ | 6$^4$ | | 3 | T Fritz | 7$^9$ | 6$^6$ | 6$^5$ | | | | | | | | | |
| | S Wawrinka | 3 | 6$^8$ | | Q | A Shevchenko | 6$^7$ | 7$^8$ | 7$^7$ | | | | | | | | | |
| Q | A Shevchenko | 6 | 7$^{10}$ | | | | | | | Q | A Shevchenko | 6$^2$ | 6 | 6$^1$ | | | | |
| Q | B van de Zandschulp | 7 | 6$^3$ | 6 | | | | | | 6/WC | F Auger-Aliassime | 7$^7$ | 3 | 7$^7$ | | | | |
| | R Bautista Agut | 5 | 7$^7$ | 2 | Q | B van de Zandschulp | 4 | 2 | | | | | | | | | | |
| WC | L Riedi | 3 | 2 | | 6/WC | F Auger-Aliassime | 6 | 6 | | | | | | | | | | |
| 6/WC | F Auger-Aliassime | 6 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | A de Minaur | 6 | 6 | | | | | | | | | | | | | | | | |
| | D Schwartzman | 4 | 4 | | 5 | A de Minaur | 4 | 3 | | | | | | | | | | | |
| | T Griekspoor | 7$^7$ | 2 | 6 | | T Griekspoor | 6 | 6 | | | | | | | | | | | |
| LL | T Seyboth Wild | 6$^4$ | 6 | 3 | | | | | | | T Griekspoor | 7$^8$ | 4 | 4 | | | | | |
| | J-L Struff | 7$^9$ | 6 | | | | | | | 4 | H Hurkacz | 6$^6$ | 6 | 6 | | | | | |
| | C Eubanks | 6$^7$ | 4 | | | J-L Struff | 1 | 4 | | | | | | | | | | | |
| | D Lajović | 6$^2$ | 3 | | 4 | H Hurkacz | 6 | 6 | | | | | | | | | | | |
| 4 | H Hurkacz | 7$^7$ | 6 | | | | | | | | | | | | 4 | H Hurkacz | 6 | 3 | 7$^7$ |
| 7 | N Jarry | 7$^8$ | 6$^2$ | 6 | | | | | | | | | | | | U Humbert | 4 | 6 | 6$^5$ |
| | A Mannarino | 6$^6$ | 7$^7$ | 4 | 7 | N Jarry | 6$^3$ | 6$^4$ | | | | | | | | | | | |
| | U Humbert | 6 | 4 | 7$^7$ | | U Humbert | 7$^7$ | 7$^7$ | | | | | | | | | | | |
| SE | M Giron | 3 | 6 | 6$^3$ | | | | | | | U Humbert | 6 | 2 | 6 | | | | | |
| WC | D Stricker | 7$^7$ | 6 | | | | | | | WC | D Stricker | 4 | 6 | 2 | | | | | |
| Q | B Hassan | 6$^2$ | 2 | | WC | D Stricker | 6 | 3 | 7$^7$ | | | | | | | | | | |
| | A Bublik | 6$^5$ | 2 | | 2 | C Ruud | 4 | 6 | 6$^1$ | | | | | | | | | | |
| 2 | C Ruud | 7$^7$ | 6 | | | | | | | | | | | | | | | | |

## Qualifying
### Seeds

* Christopher O'Connell (qualified)
* Jordan Thompson (withdrew)
* Botic van de Zandschulp (qualified)
* Pedro Cachin (first round)
* Thiago Seyboth Wild (qualifying competition, lucky loser)
* Dominik Koepfer (qualifying competition)
* Arthur Rinderknech (qualifying competition)
* Alexander Shevchenko (qualified)

### Qualifiers

* Christopher O'Connell
* Benjamin Hassan
* Botic van de Zandschulp
* Alexander Shevchenko

### Lucky loser

* Thiago Seyboth Wild

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Christopher O'Connell | 7$^7$ | 7 | | | | | |
| | Maxime Cressy | 6$^3$ | 5 | | | | | |
| | Maxime Cressy | 6$^3$ | 5 | | 1 | Christopher O'Connell | 7$^7$ | 7$^7$ |
| | | | | | 5 | Thiago Seyboth Wild | 6$^4$ | 6$^4$ |
| | Michael Mmoh | 5 | 6 | 3 | 5 | Thiago Seyboth Wild | 6$^4$ | 6$^4$ |
| 5 | Thiago Seyboth Wild | 7 | 4 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| Alt | Benjamin Hassan | 6 | 5 | 7$^7$ | | | | | |
| | Hamad Medjedovic | 2 | 7 | 6$^3$ | | | | | |
| | Hamad Medjedovic | 2 | 7 | 6$^3$ | Alt | Benjamin Hassan | 6 | 2 | 6 |
| | | | | | 6 | Dominik Koepfer | 2 | 6 | 4 |
| Alt | Sumit Nagal | 6 | 1 | 6$^3$ | 6 | Dominik Koepfer | 2 | 6 | 4 |
| 6 | Dominik Koepfer | 3 | 6 | 7$^7$ | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Botic van de Zandschulp | 6 | 7$^7$ | | | | |
| WC | Mika Brunold | 1 | 6$^5$ | | | | |
| WC | Mika Brunold | 1 | 6$^5$ | 3 | Botic van de Zandschulp | 7$^7$ | 6 |
| | | | | 7 | Arthur Rinderknech | 6$^4$ | 3 |
| WC | Marc-Andrea Hüsler | 4 | 3 | 7 | Arthur Rinderknech | 6$^4$ | 3 |
| 7 | Arthur Rinderknech | 6 | 6 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Pedro Cachin | 3 | 6 | 4 | | | | |
| WC | Rémy Bertola | 6 | 3 | 6 | | | | |
| WC | Rémy Bertola | 6 | 3 | 6 | WC | Rémy Bertola | 3 | 5 |
| | | | | | 8 | Alexander Shevchenko | 6 | 7 |
| | Fabio Fognini | 4 | 7 | 0 | 8 | Alexander Shevchenko | 6 | 7 |
| 8 | Alexander Shevchenko | 6 | 5 | 6 | | | | |