The 2025 Kinoshita Group Japan Open was a men's tennis tournament played on outdoor hardcourts. It was the 51st edition of the Japan Open, and an ATP 500 tournament on the 2025 ATP Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from 24 to 30 September 2025.
Champions Singles
Carlos Alcaraz def. Taylor Fritz, 6–4, 6–4
Doubles
Hugo Nys / Édouard Roger-Vasselin def. Rohan Bopanna / Takeru Yuzuki, 7–5, 7–5
Singles main-draw entrants Seeds Country Player Rank1 Seed Carlos Alcaraz11 Taylor Fritz52 Holger Rune113 Casper Ruud124Tomáš Macháč225 Ugo Humbert246 Denis Shapovalov267 Frances Tiafoe298 1 Rankings are as of 15 September 2025.
Other entrants The following players received wildcards into the singles main draw: Shintaro Mochizuki Yoshihito Nishioka Yosuke Watanuki
The following player received entry using a protected ranking: Jenson Brooksby
The following players received entry from the qualifying draw: Márton Fucsovics Ethan Quinn Sho Shimabukuro Aleksandar Vukic
Withdrawals Jack Draper → replaced by Marcos Giron Jiří Lehečka → replaced by Daniel Altmaier Alexei Popyrin → replaced by Jenson Brooksby Ben Shelton → replaced by Hamad Medjedovic
Doubles main-draw entrants
Seeds Country Player Country Player Rank1 SeedChristian HarrisonEvan King331Hugo NysÉdouard Roger-Vasselin382Máximo GonzálezAndrés Molteni453Sander ArendsLuke Johnson544 Rankings are as of 15 September 2025.
Other entrants The following pairs received wildcards into the doubles main draw: Rohan Bopanna / Takeru Yuzuki Kaito Uesugi / Seita Watanabe
The following pair received entry from the qualifying draw: Fernando Romboli / Jan Zieliński
References
External links Official website