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.
Draw
Finals
Top half
Bottom half
Qualifying Seeds
Qualifiers Marc-Andrea Hüsler Gabriel Diallo Alejandro Moro Cañas Francesco Passaro
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
External links Main draw Qualifying draw