Talk:2023-07-31 San Marino (c)

The   (known as for sponsorship reasons) was a wo/men's tennis tournament played on outdoor  courts in Tokyo, Japan, that was part of the Championship series of tournaments on the  ATP Tour. It was the 22nd edition of the and was held.

Singles
{| class="wikitable" style="text-align:center;font-size:90%" !width=40| Seed !width=150| Country !width=150| Player !width=60| Result !width=190| Playing against }}
 * align=left| 🇫🇷 FRA Alexandre Müller (First Round)
 * align=left| 🇪🇸 ESP Jaume Munar (Champion)
 * align=left| 🇧🇪 BEL David Goffin (Quarterfinals)
 * align=left| 🇮🇹 ITA Fabio Fognini (Quarterfinals)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇧🇪 BEL Kimmer Coppejans (Second Round)
 * align=left| 🇨🇿 CZE Zdeněk Kolář (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)
 * align=left| 🇧🇪 BEL David Goffin (Quarterfinals)
 * align=left| 🇮🇹 ITA Fabio Fognini (Quarterfinals)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇧🇪 BEL Kimmer Coppejans (Second Round)
 * align=left| 🇨🇿 CZE Zdeněk Kolář (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇧🇪 BEL Kimmer Coppejans (Second Round)
 * align=left| 🇨🇿 CZE Zdeněk Kolář (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)
 * align=left| 🇧🇪 BEL Kimmer Coppejans (Second Round)
 * align=left| 🇨🇿 CZE Zdeněk Kolář (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)
 * align=left| 🇨🇿 CZE Zdeněk Kolář (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)
 * align=left| 🇦🇺 AUS Marc Polmans (First Round)

Doubles
{| class="wikitable" style="text-align:center;font-size:90%" !width=40| Seed !width=150| Country !width=150| Player !width=60| Result !width=190| Playing against }}
 * align=left| 🇮🇹 ITA Marco Bortolotti 🇮🇹 ITA Andrea Pellegrino (First Round)
 * align=left| 🇧🇾 BLR Ivan Liutarevich 🇺🇦 UKR Vladyslav Manafov (Champions)
 * align=left| 🇫🇷 FRA Théo Arribagé 🇫🇷 FRA Luca Sanchez (Final)
 * align=left| 🇪🇸 ESP Íñigo Cervantes 🇪🇸 ESP Sergio Martos Gornés (Quarterfinals)
 * align=left| 🇧🇾 BLR Ivan Liutarevich 🇺🇦 UKR Vladyslav Manafov (Champions)
 * align=left| 🇫🇷 FRA Théo Arribagé 🇫🇷 FRA Luca Sanchez (Final)
 * align=left| 🇪🇸 ESP Íñigo Cervantes 🇪🇸 ESP Sergio Martos Gornés (Quarterfinals)
 * align=left| 🇫🇷 FRA Théo Arribagé 🇫🇷 FRA Luca Sanchez (Final)
 * align=left| 🇪🇸 ESP Íñigo Cervantes 🇪🇸 ESP Sergio Martos Gornés (Quarterfinals)
 * align=left| 🇫🇷 FRA Théo Arribagé 🇫🇷 FRA Luca Sanchez (Final)
 * align=left| 🇪🇸 ESP Íñigo Cervantes 🇪🇸 ESP Sergio Martos Gornés (Quarterfinals)
 * align=left| 🇪🇸 ESP Íñigo Cervantes 🇪🇸 ESP Sergio Martos Gornés (Quarterfinals)
 * align=left| 🇪🇸 ESP Íñigo Cervantes 🇪🇸 ESP Sergio Martos Gornés (Quarterfinals)

Singles

 * Seeds
 * Draw

Doubles

 * Seeds
 * Draw