2023 Japan Open Tennis Championships
Tennis tournament
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The 2023 Japan Open Tennis Championships (also known as the Kinoshita Group Japan Open for sponsorship reasons) was a men's tennis tournament played on outdoor hardcourts. It was the 48th edition of the Japan Open, and was part of the ATP Tour 500 series of the 2023 ATP Tour. It was held at the Ariake Coliseum in Tokyo, Japan, from 16 to 22 October 2023.[1]
| 2023 Japan Open Tennis Championships | |
|---|---|
| Date | 16–22 October |
| Edition | 48th |
| Category | ATP Tour 500 |
| Draw | 32S/16D |
| Prize money | $2,013,940 |
| Surface | Hard / outdoor |
| Location | Tokyo, Japan |
| Venue | Ariake Coliseum |
| Champions | |
| Singles | |
 Ben Shelton | |
| Doubles | |
 Rinky Hijikata / Max Purcell | |
Champions
Singles
Ben Shelton def. 
Aslan Karatsev, 7–5, 6–1
Doubles
Rinky Hijikata / Max Purcell def. 
Jamie Murray / 
Michael Venus, 6–4, 6–1
Singles main-draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| USA |
Taylor Fritz | 8 | 1 |
 NOR |
Casper Ruud | 9 | 2 |
 GER |
Alexander Zverev | 10 | 3 |
| AUS |
Alex de Minaur | 11 | 4 |
| USA |
Tommy Paul | 12 | 5 |
| USA |
Frances Tiafoe | 13 | 6 |
| Karen Khachanov | 14 | 7 | |
 CAN |
Félix Auger-Aliassime | 15 | 8 |
- 1 Rankings are as of 2 October 2023.[2]
Other entrants
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Withdrawals
- Andy Murray → replaced by
Sebastian Ofner 
Kei Nishikori → replaced by 
Zhang Zhizhen
Milos Raonic → replaced by Christopher O'Connell
Doubles main-draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
 IND |
AUS |
||||
 ESP |
 ARG |
||||
 ESA |
Marcelo Arévalo |  NED |
Jean-Julien Rojer | 33 | 3 |
 BEL |
Sander Gillé | BEL |
Joran Vliegen | 37 | 4 |
- Rankings are as of 2 October 2023.
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pair received entry from the qualifying draw:
The following pairs received entry as lucky losers:
Withdrawals
Rohan Bopanna / Matthew Ebden → replaced by Kaichi Uchida / Yasutaka Uchiyama
Marcel Granollers / 
Horacio Zeballos → replaced by Shintaro Mochizuki / Rio Noguchi
Hugo Nys / 
Jan Zieliński → replaced by Ben McLachlan / Yoshihito Nishioka
