# 2025 ATP Hong Kong Tennis Open – Singles

Alexandre Müller defeated Kei Nishikori in the final, 2–6, 6–1, 6–3 to win the singles tennis title at the 2025 ATP Hong Kong Tennis Open. It was his first ATP Tour singles title. Müller saved two match points in his second-round match against Miomir Kecmanović and became the third player in the Open Era to win a tour-level title after losing the first set in all of his matches, after Arthur Ashe (in 1975 WCT Finals) and Alexander Bublik (in 2024 Montpellier).
It was Nishikori's first ATP Tour final since the 2019 Brisbane International.
Andrey Rublev was the defending champion, but lost in the second round to Fábián Marozsán.

## Seeds

The top four seeds will receive a bye into the second round.
* Andrey Rublev (second round)
* Lorenzo Musetti (quarterfinals)
* Karen Khachanov (second round)
* Arthur Fils (quarterfinals)
* Nuno Borges (second round)
* Brandon Nakashima (first round)
* Pedro Martínez (second round)
* Luciano Darderi (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 | Final |
| | Shang Juncheng | 3$^r$ | | | | | | | |
| WC | Kei Nishikori | 4 | | | | | | | |
| WC | Kei Nishikori | 4 | | | WC | Kei Nishikori | 6 | 1 | 3 |
| | | | | | | Alexandre Müller | 2 | 6 | 6 |
| | Alexandre Müller | 4 | 7$^7$ | 6 | | Alexandre Müller | 2 | 6 | 6 |
| | Jaume Munar | 6 | 6$^5$ | 4 | | | | | |

### Top half

| 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 |
| | | | | 1 | A Rublev | 5 | 6 | 3 | | | | | | | | |
| | R Safiullin | 1 | 6$^9$ | | F Marozsán | 7 | 3 | 6 | | | | | | | | |
| | F Marozsán | 6 | 7$^{11}$ | | | | | | | F Marozsán | 6 | 3 | 4 | | | |
| | J Shang | 7$^7$ | 6 | | | | | | | J Shang | 1 | 6 | 6 | | | |
| WC | C Wong | 6$^3$ | 4 | | J Shang | 6 | 6 | | | | | | | | | |
| Q | F Passaro | 4 | 4 | 7 | P Martínez | 3 | 1 | | | | | | | | | |
| 7 | P Martínez | 6 | 6 | | | | | | | | | | | | J Shang | 3$^r$ |
| | | | | | | | | | | | | | | WC | K Nishikori | 4 |
| | | | | 3 | K Khachanov | 6 | 3 | 5 | | | | | | | | |
| | D Shapovalov | 2 | 3 | WC | K Nishikori | 4 | 6 | 7 | | | | | | | | |
| WC | K Nishikori | 6 | 6 | | | | | | WC | K Nishikori | 6 | 3 | 6 | | | |
| | C Norrie | 6 | 7 | | | | | | | C Norrie | 3 | 6 | 2 | | | |
| | L Tien | 3 | 5 | | C Norrie | 6 | 4 | 6 | | | | | | | | |
| | L Sonego | 7$^7$ | 6 | | L Sonego | 2 | 6 | 1 | | | | | | | | |
| 6 | B Nakashima | 6$^4$ | 3 | | | | | | | | | | | | | |

### 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 |
| 8 | L Darderi | 3 | 3 | | | | | | | | | | | | | | | |
| | M Kecmanović | 6 | 6 | | | M Kecmanović | 7 | 6$^6$ | 6$^{10}$ | | | | | | | | | |
| | A Müller | 2 | 6 | 6 | | A Müller | 5 | 7$^8$ | 7$^{12}$ | | | | | | | | | |
| Q | M-A Hüsler | 6 | 4 | 3 | | | | | | | A Müller | 3 | 6 | 6 | | | | |
| WC | Z Bergs | 6 | 6 | | | | | | | 4 | A Fils | 6 | 3 | 1 | | | | |
| Q | A Moro Cañas | 4 | 4 | | WC | Z Bergs | 6$^7$ | 4 | | | | | | | | | | |
| | | | | | 4 | A Fils | 7$^9$ | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | A Müller | 4 | 7$^7$ | 6 |
| 5 | N Borges | 3 | 6 | 7$^8$ | | | | | | | | | | | J Munar | 6 | 6$^5$ | 4 |
| | Y Bu | 6 | 3 | 6$^6$ | 5 | N Borges | 3 | 5 | | | | | | | | | | |
| | J Munar | 4 | 6 | 6 | | J Munar | 6 | 7 | | | | | | | | | | |
| | A Davidovich Fokina | 6 | 3 | 3 | | | | | | | J Munar | 2 | 7$^7$ | 7 | | | | |
| Q | G Diallo | 4 | 7$^7$ | 7 | | | | | | 2 | L Musetti | 6 | 6$^4$ | 5 | | | | |
| | R Carballés Baena | 6 | 6$^4$ | 5 | Q | G Diallo | 4 | 3 | | | | | | | | | | |
| | | | | | 2 | L Musetti | 6 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

* Pavel Kotov (qualifying competition)
* Gabriel Diallo (qualified)
* Daniel Altmaier (first round)
* Francesco Passaro (qualified)
* Laslo Djere (first round)
* Juan Manuel Cerúndolo (first round)
* Cristian Garín (first round)
* Hugo Grenier (qualifying competition)

### Qualifiers

* Marc-Andrea Hüsler
* Gabriel Diallo
* Alejandro Moro Cañas
* Francesco Passaro

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Pavel Kotov | 3 | 7 | 7$^7$ | | | | |
| | Valentin Royer | 6 | 5 | 6$^5$ | | | | |
| | Valentin Royer | 6 | 5 | 6$^5$ | 1 | Pavel Kotov | 6$^7$ | 4 |
| | | | | | | Marc-Andrea Hüsler | 7$^9$ | 6 |
| | Marc-Andrea Hüsler | 7 | 6 | | | Marc-Andrea Hüsler | 7$^9$ | 6 |
| 5 | Laslo Djere | 5 | 4 | | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Gabriel Diallo | 7$^7$ | 6 | | | | | | |
| WC | Ng Ki-lung | 6$^2$ | 2 | | | | | | |
| WC | Ng Ki-lung | 6$^2$ | 2 | | 2 | Gabriel Diallo | 4 | 6 | 7 |
| | | | | | 8 | Hugo Grenier | 6 | 1 | 5 |
| | Térence Atmane | 6 | 3 | 4 | 8 | Hugo Grenier | 6 | 1 | 5 |
| 8 | Hugo Grenier | 3 | 6 | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Daniel Altmaier | 4 | 3 | | | | |
| | Alejandro Moro Cañas | 6 | 6 | | | | |
| | Alejandro Moro Cañas | 6 | 6 | | Alejandro Moro Cañas | 6 | 6 |
| | | | | WC | Cui Jie | 2 | 3 |
| WC | Cui Jie | 6 | 6 | WC | Cui Jie | 2 | 3 |
| 6 | Juan Manuel Cerúndolo | 2 | 4 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Francesco Passaro | 7 | 4 | 6 | | | | | |
| | Aziz Dougaz | 5 | 6 | 3 | | | | | |
| | Aziz Dougaz | 5 | 6 | 3 | 4 | Francesco Passaro | 4 | 6 | 6 |
| | | | | | | Denis Yevseyev | 6 | 2 | 4 |
| | Denis Yevseyev | 6 | 2 | 6 | | Denis Yevseyev | 6 | 2 | 4 |
| 7 | Cristian Garín | 4 | 6 | 2 | | | | | |