Stadium: COURT C Round: 26 Ground: Synthetic outdoor
| ITF - W25 Makinohara | 2023/10/04 02:00 | Rina Saigo v Ari Matsumoto | 6-4,6-4 |
| WTA - Tokyo | 2023/09/25 05:00 | Cristina Bucsa v Rina Saigo | 6-1,6-2 |
| WTA - Tokyo | 2023/09/24 01:00 | Sakura Hosogi v Rina Saigo | 1-6,3-6 |
| WTA - Tokyo | 2023/09/23 03:00 | Giuliana Olmos v Rina Saigo | 6-7,3-6 |
| ITF - W40 Skopje | 2023/09/14 09:45 | Lina Gjorcheska v Rina Saigo | 6-7,6-2,6-2 |
| ITF - W40 Skopje | 2023/09/12 10:30 | Ilay Yoruk v Rina Saigo | 6-4,4-6,6-7 |
| ITF - W60 Vienna | 2023/09/07 09:00 | Irina Maria Bara v Rina Saigo | 6-3,6-4 |
| ITF - W60 Vienna | 2023/09/06 08:50 | Iva Primorac v Rina Saigo | 7-5,1-6,2-6 |
| ITF - W25 Makinohara | 2023/10/04 01:55 | Funa Kozaki v Miho Kuramochi | 6-3,3-6,6-1 |
| ITF - W25 Makinohara | 2023/10/03 00:30 | Funa Kozaki v Rio Tsuda | 6-4,6-2 |
| ITF - W40 Nanao | 2023/09/29 01:25 | Miho Kuramochi v Funa Kozaki | 6-2,2-6,6-1 |
| ITF - W40 Nanao | 2023/09/27 02:40 | Funa Kozaki v Eri Shimizu | 6-4,6-2 |
| ITF - W40 Nanao | 2023/09/25 01:00 | Funa Kozaki v Aely Arai | 6-4,6-3 |
| ITF - W100 Tokyo | 2023/09/03 01:00 | Fernanda Contreras Gomez v Funa Kozaki | 6-0,6-1 |
| ITF - W15 Sapporo | 2023/08/09 02:30 | Funa Kozaki v Man Ying Maggie Ng | 6-2,6-1 |
| ITF - W15 Sapporo | 2023/08/04 00:55 | Funa Kozaki v Rinon Okuwaki | 4-6,5-7 |