Talk:2023-06-05 Prostějov (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| 🇨🇿 CZE Jiří Lehečka (Quarterfinals)
 * align=left| 🇦🇷 ARG Federico Coria (First Round)
 * align=left| 🇦🇷 ARG Facundo Bagnis (Second Round)
 * align=left| 🇭🇺 HUN Zsombor Piros (Second Round)
 * align=left| 🇨🇿 CZE Tomáš Macháč (Final)
 * align=left| 🇸🇰 SVK Lukáš Klein (Semifinals)
 * align=left| 🇸🇪 SWE Elias Ymer (Second Round, Retired)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇦🇷 ARG Facundo Bagnis (Second Round)
 * align=left| 🇭🇺 HUN Zsombor Piros (Second Round)
 * align=left| 🇨🇿 CZE Tomáš Macháč (Final)
 * align=left| 🇸🇰 SVK Lukáš Klein (Semifinals)
 * align=left| 🇸🇪 SWE Elias Ymer (Second Round, Retired)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇨🇿 CZE Tomáš Macháč (Final)
 * align=left| 🇸🇰 SVK Lukáš Klein (Semifinals)
 * align=left| 🇸🇪 SWE Elias Ymer (Second Round, Retired)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇸🇰 SVK Lukáš Klein (Semifinals)
 * align=left| 🇸🇪 SWE Elias Ymer (Second Round, Retired)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇸🇪 SWE Elias Ymer (Second Round, Retired)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇮🇹 ITA Flavio Cobolli (First Round)
 * align=left| 🇮🇹 ITA Flavio Cobolli (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| URU Ariel Behar 🇨🇿 CZE Adam Pavlásek (Champions)
 * align=left| 🇨🇿 CZE Roman Jebavý 🇻🇪 VEN Luis David Martínez (First Round)
 * align=left| 🇮🇹 ITA Marco Bortolotti 🇪🇸 ESP Sergio Martos Gornés (Final)
 * align=left| 🇺🇦 UKR Vladyslav Manafov 🇵🇱 POL Szymon Walków (First Round)
 * align=left| 🇨🇿 CZE Roman Jebavý 🇻🇪 VEN Luis David Martínez (First Round)
 * align=left| 🇮🇹 ITA Marco Bortolotti 🇪🇸 ESP Sergio Martos Gornés (Final)
 * align=left| 🇺🇦 UKR Vladyslav Manafov 🇵🇱 POL Szymon Walków (First Round)
 * align=left| 🇮🇹 ITA Marco Bortolotti 🇪🇸 ESP Sergio Martos Gornés (Final)
 * align=left| 🇺🇦 UKR Vladyslav Manafov 🇵🇱 POL Szymon Walków (First Round)
 * align=left| 🇮🇹 ITA Marco Bortolotti 🇪🇸 ESP Sergio Martos Gornés (Final)
 * align=left| 🇺🇦 UKR Vladyslav Manafov 🇵🇱 POL Szymon Walków (First Round)
 * align=left| 🇺🇦 UKR Vladyslav Manafov 🇵🇱 POL Szymon Walków (First Round)
 * align=left| 🇺🇦 UKR Vladyslav Manafov 🇵🇱 POL Szymon Walków (First Round)

Singles

 * Seeds
 * Draw

Doubles

 * Seeds
 * Draw