# 2025 ASB Classic – Men's singles

Gaël Monfils defeated Zizou Bergs in the final, 6–3, 6–4 to win the men's singles tennis title at the 2025 ASB Classic. It was his 13th ATP Tour title. Aged 38 years and 131 days old, Monfils became the oldest men's singles champion on the ATP Tour since its establishment in 1990, and the third-oldest men's singles tour-level champion in the Open Era.
Alejandro Tabilo was the defending champion, but lost in the second round to Nishesh Basavareddy.

## Seeds

The top four seeds received a bye into the second round.
* Ben Shelton (second round)
* Alejandro Tabilo (second round)
* Sebastián Báez (second round)
* Francisco Cerúndolo (second round)
* Giovanni Mpetshi Perricard (withdrew)
* Flavio Cobolli (first round, retired)
* Nuno Borges (semifinals)
* Alex Michelsen (quarterfinals)
* Jan-Lennard Struff (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 | Semifinals | Final | Final | Final | Final |
| 7 | Nuno Borges | 2 | 6 | 5 | | | | |
| Q | Zizou Bergs | 6 | 3 | 7 | | | | |
| Q | Zizou Bergs | 6 | 3 | 7 | Q | Zizou Bergs | 3 | 4 |
| | | | | | | Gaël Monfils | 6 | 6 |
| | Gaël Monfils | 7$^7$ | 6 | | | Gaël Monfils | 6 | 6 |
| Q | Nishesh Basavareddy | 6$^5$ | 4 | | | | | |

### 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 | Semifinals |
| | | | | | 1 | B Shelton | 6$^2$ | 6 | 5 | | | | | | | | | | |
| LL | P Carreño Busta | 2 | 6 | 5 | | J Menšík | 7$^7$ | 4 | 7 | | | | | | | | | | |
| | J Menšík | 6 | 4 | 7 | | | | | | | J Menšík | 7$^7$ | 2 | 6$^4$ | | | | | |
| | M Navone | 7$^8$ | 6$^5$ | 6 | | | | | | 7 | N Borges | 6$^4$ | 6 | 7$^7$ | | | | | |
| LL | A Mannarino | 6$^6$ | 7$^7$ | 1 | | M Navone | 6 | 5 | 4 | | | | | | | | | | |
| | L Darderi | 7 | 3 | 5 | 7 | N Borges | 4 | 7 | 6 | | | | | | | | | | |
| 7 | N Borges | 5 | 6 | 7 | | | | | | | | | | | 7 | N Borges | 2 | 6 | 5 |
| | | | | | | | | | | | | | | | Q | Z Bergs | 6 | 3 | 7 |
| | | | | | 4 | F Cerúndolo | 2 | 5 | | | | | | | | | | | |
| | R Carballés Baena | 6 | 3 | 7 | | R Carballés Baena | 6 | 7 | | | | | | | | | | | |
| LL | D Altmaier | 3 | 6 | 5 | | | | | | | R Carballés Baena | 6 | 2 | 3 | | | | | |
| Q | Z Bergs | 6 | 7 | | | | | | | Q | Z Bergs | 1 | 6 | 6 | | | | | |
| WC | I Becroft | 3 | 5 | | Q | Z Bergs | 6 | 6 | | | | | | | | | | | |
| Q | L Nardi | 6 | 1 | | Q | L Nardi | 1 | 4 | | | | | | | | | | | |
| 6 | F Cobolli | 2 | 1$^r$ | | | | | | | | | | | | | | | | |

### 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 |
| 9 | J-L Struff | 6 | 6 | | | | | | | | | | | | | | | |
| | Y Bu | 3 | 4 | | 9 | J-L Struff | 1 | 6$^5$ | | | | | | | | | | |
| | P Martínez | 6 | 6$^5$ | 3 | | G Monfils | 6 | 7$^7$ | | | | | | | | | | |
| | G Monfils | 1 | 7$^7$ | 6 | | | | | | | G Monfils | 6 | 6 | | | | | |
| | C Norrie | 2 | 3 | | | | | | | LL | F Díaz Acosta | 3 | 1 | | | | | |
| LL | F Díaz Acosta | 6 | 6 | | LL | F Díaz Acosta | 6 | 7$^7$ | | | | | | | | | | |
| | | | | | 3 | S Báez | 4 | 6$^1$ | | | | | | | | | | |
| | | | | | | | | | | | | | | | | G Monfils | 7$^7$ | 6 |
| 8 | A Michelsen | 6$^8$ | 6 | 6 | | | | | | | | | | | Q | N Basavareddy | 6$^5$ | 4 |
| Q | S Nagal | 7$^{10}$ | 4 | 2 | 8 | A Michelsen | 7$^7$ | 6 | | | | | | | | | | |
| WC | G Diallo | 6$^5$ | 6 | 6$^7$ | | L Sonego | 6$^3$ | 2 | | | | | | | | | | |
| | L Sonego | 7$^7$ | 2 | 7$^9$ | | | | | | 8 | A Michelsen | 6 | 2 | 4 | | | | |
| Q | N Basavareddy | 6 | 6 | | | | | | | Q | N Basavareddy | 2 | 6 | 6 | | | | |
| LL | F Comesaña | 2 | 2 | | Q | N Basavareddy | 6 | 5 | 6 | | | | | | | | | |
| | | | | | 2 | A Tabilo | 4 | 7 | 4 | | | | | | | | | |

## Qualifying
### Seeds

* Adrian Mannarino (qualifying competition, lucky loser)
* Zizou Bergs (qualified)
* Facundo Díaz Acosta (qualifying competition, lucky loser)
* Botic van de Zandschulp (first round)
* Francisco Comesaña (qualifying competition, lucky loser)
* Daniel Altmaier (qualifying competition, lucky loser)
* Luca Nardi (qualified)
* Sumit Nagal (qualified)

### Qualifiers

* Sumit Nagal
* Zizou Bergs
* Luca Nardi
* Nishesh Basavareddy

### Lucky losers

* Facundo Díaz Acosta
* Francisco Comesaña
* Adrian Mannarino
* Daniel Altmaier
* Pablo Carreño Busta

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Adrian Mannarino | 6 | 6 | | | | | |
| PR | Dominic Stricker | 4 | 4 | | | | | |
| PR | Dominic Stricker | 4 | 4 | | 1 | Adrian Mannarino | 6$^5$ | 3 |
| | | | | | 8 | Sumit Nagal | 7$^7$ | 6 |
| WC | Alexander Klintcharov | 6 | 3 | 1 | 8 | Sumit Nagal | 7$^7$ | 6 |
| 8 | Sumit Nagal | 1 | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Zizou Bergs | 2 | 7$^8$ | 6 | | | | | |
| | Pablo Carreño Busta | 6 | 6$^6$ | 4 | | | | | |
| | Pablo Carreño Busta | 6 | 6$^6$ | 4 | 2 | Zizou Bergs | 3 | 6 | 6 |
| | | | | | 5 | Francisco Comesaña | 6 | 4 | 3 |
| Alt | Maxime Janvier | 1 | 7$^7$ | 3 | 5 | Francisco Comesaña | 6 | 4 | 3 |
| 5 | Francisco Comesaña | 6 | 6$^5$ | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Facundo Díaz Acosta | 6 | 6 | | | | | | |
| WC | Ajeet Rai | 4 | 2 | | | | | | |
| WC | Ajeet Rai | 4 | 2 | | 3 | Facundo Díaz Acosta | 5 | 7$^7$ | 2 |
| | | | | | 7 | Luca Nardi | 7 | 6$^2$ | 6 |
| | Daniel Masur | 7$^7$ | 4 | 2 | 7 | Luca Nardi | 7 | 6$^2$ | 6 |
| 7 | Luca Nardi | 6$^3$ | 6 | 6 | | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Botic van de Zandschulp | 7$^7$ | 5 | 3 | | | | |
| | Nishesh Basavareddy | 6$^3$ | 7 | 6 | | | | |
| | Nishesh Basavareddy | 6$^3$ | 7 | 6 | | Nishesh Basavareddy | 6 | 6 |
| | | | | | 6 | Daniel Altmaier | 2 | 1 |
| Alt | Charles Broom | 5 | 1 | | 6 | Daniel Altmaier | 2 | 1 |
| 6 | Daniel Altmaier | 7 | 6 | | | | | |