# 2023 ASB Classic – Men's singles

Richard Gasquet defeated Cameron Norrie in the final, 4–6, 6–4, 6–4 to win the men's singles tennis title at the 2023 ASB Classic. It was his 16th ATP Tour singles title, and his first since 2018.
Ugo Humbert was the defending champion from when the event was last held in 2020, but lost in the first round to Christopher Eubanks.

## Seeds

The top four seeds received a bye into the second round.
* Casper Ruud (second round)
* Cameron Norrie (final)
* Diego Schwartzman (second round, retired)
* Francisco Cerúndolo (withdrew)
* Alexander Bublik (first round)
* John Isner (first round)
* Sebastián Báez (first round)
* Adrian Mannarino (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 | Final |
| | Constant Lestienne | | | | | | | |
| | Richard Gasquet | w/o | | | | | | |
| | Richard Gasquet | w/o | | | Richard Gasquet | 4 | 6 | 6 |
| | | | | 2 | Cameron Norrie | 6 | 4 | 4 |
| | Jenson Brooksby | 3 | 4 | 2 | Cameron Norrie | 6 | 4 | 4 |
| 2 | Cameron Norrie | 6 | 6 | | | | | |

### 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 |
| | | | | | 1 | C Ruud | 6 | 3 | 6$^3$ | | | | | | |
| | J Munar | 6 | 1 | 6$^4$ | | L Đere | 3 | 6 | 7$^7$ | | | | | | |
| | L Đere | 3 | 6 | 7$^7$ | | | | | | L Đere | 6 | 6$^2$ | 5 | | |
| | C Lestienne | 6 | 6 | | | | | | | C Lestienne | 2 | 7$^7$ | 7 | | |
| | P Cachin | 3 | 1 | | | C Lestienne | 1 | 7$^7$ | 7 | | | | | | |
| Q | G Barrère | 6$^3$ | 7$^7$ | 6 | Q | G Barrère | 6 | 6$^4$ | 5 | | | | | | |
| 6 | J Isner | 7$^7$ | 6$^5$ | 3 | | | | | | | | | | C Lestienne | |
| | | | | | | | | | | | | | | R Gasquet | w/o |
| | | | | | LL | J Sousa | 6$^2$ | 2 | | | | | | | |
| | R Gasquet | 6 | 6 | | | R Gasquet | 7$^7$ | 6 | | | | | | | |
| WC | K Pannu | 3 | 1 | | | | | | | R Gasquet | 1 | 6 | 6 | | |
| WC | U Humbert | 6$^4$ | 6$^3$ | | | | | | | D Goffin | 6 | 1 | 1 | | |
| Q | C Eubanks | 7$^7$ | 7$^7$ | | Q | C Eubanks | 2 | 4 | | | | | | | |
| | D Goffin | 6 | 6 | | | D Goffin | 6 | 6 | | | | | | | |
| 5 | A Bublik | 3 | 4 | | | | | | | | | | | | |

### 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 |
| 7 | S Báez | 6$^1$ | 1 | | | | | | | | | | | | | | | |
| WC | B Shelton | 7$^7$ | 6 | | WC | B Shelton | 3 | 2 | | | | | | | | | | |
| | A Molčan | 3 | 4 | | | Q Halys | 6 | 6 | | | | | | | | | | |
| | Q Halys | 6 | 6 | | | | | | | | Q Halys | 6$^3$ | 6$^2$ | | | | | |
| | J Brooksby | 6$^2$ | 6 | 6 | | | | | | | J Brooksby | 7$^7$ | 7$^7$ | | | | | |
| | F Fognini | 7$^7$ | 1 | 3 | | J Brooksby | 6 | 0 | | | | | | | | | | |
| | | | | | 3 | D Schwartzman | 1 | 0$^r$ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | J Brooksby | 3 | 4 |
| 8 | A Mannarino | 4 | 6$^4$ | | | | | | | | | | | | 2 | C Norrie | 6 | 6 |
| | JJ Wolf | 6 | 7$^7$ | | | JJ Wolf | 4 | 4 | | | | | | | | | | |
| | M Giron | 6$^5$ | 6 | 7 | | M Giron | 6 | 6 | | | | | | | | | | |
| LL | F Coria | 7$^7$ | 4 | 5 | | | | | | | M Giron | 1 | 7$^7$ | 2 | | | | |
| Q | J Lehečka | 6 | 7 | | | | | | | 2 | C Norrie | 6 | 6$^5$ | 6 | | | | |
| Q | T Monteiro | 3 | 5 | | Q | J Lehečka | 4 | 7$^7$ | 3 | | | | | | | | | |
| | | | | | 2 | C Norrie | 6 | 6$^4$ | 6 | | | | | | | | | |

## Qualifying
### Seeds

* Thiago Monteiro (qualified)
* Federico Coria (qualifying competition, lucky loser)
* Dušan Lajović (first round)
* Jiří Lehečka (qualified)
* João Sousa (qualifying competition, lucky loser)
* Facundo Bagnis (qualifying competition)
* Grégoire Barrère (qualified)
* Taro Daniel (first round)

### Qualifiers

* Thiago Monteiro
* Grégoire Barrère
* Christopher Eubanks
* Jiří Lehečka

### Lucky losers

* Federico Coria
* João Sousa

### 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 | Thiago Monteiro | 3 | 7 | 7$^8$ | | | | | |
| | Daniel Altmaier | 6 | 5 | 6$^6$ | | | | | |
| | Daniel Altmaier | 6 | 5 | 6$^6$ | 1 | Thiago Monteiro | 6$^5$ | 6 | 6 |
| | | | | | WC | Ajeet Rai | 7$^7$ | 3 | 4 |
| WC | Ajeet Rai | 7 | 0 | 6 | WC | Ajeet Rai | 7$^7$ | 3 | 4 |
| 8 | Taro Daniel | 5 | 6 | 3 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Federico Coria | 3 | 6 | 6 | | | | |
| | Luca Van Assche | 6 | 4 | 2 | | | | |
| | Luca Van Assche | 6 | 4 | 2 | 2 | Federico Coria | 3 | 5 |
| | | | | | 7 | Grégoire Barrère | 6 | 7 |
| | Alexandar Lazarov | 1 | 4 | | 7 | Grégoire Barrère | 6 | 7 |
| 7 | Grégoire Barrère | 6 | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Dušan Lajović | 6 | 3 | 4 | | | | | |
| | Christopher Eubanks | 2 | 6 | 6 | | | | | |
| | Christopher Eubanks | 2 | 6 | 6 | | Christopher Eubanks | 6$^3$ | 7 | 6 |
| | | | | | 5 | João Sousa | 7$^7$ | 5 | 4 |
| WC | Finn Reynolds | 6$^1$ | 4 | | 5 | João Sousa | 7$^7$ | 5 | 4 |
| 5 | João Sousa | 7$^7$ | 6 | | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Jiří Lehečka | 5 | 6 | 6 | | | | | |
| | Jan Choinski | 7 | 0 | 2 | | | | | |
| | Jan Choinski | 7 | 0 | 2 | 4 | Jiří Lehečka | 6 | 3 | 6 |
| | | | | | 6 | Facundo Bagnis | 2 | 6 | 1 |
| | Tseng Chun-hsin | 3 | 3 | | 6 | Facundo Bagnis | 2 | 6 | 1 |
| 6 | Facundo Bagnis | 6 | 6 | | | | | | |