Stadium: Court A5 Round: 25 Ground: Synthetic outdoor
| WTA - Tokyo | 2022/09/19 09:55 | Petra Martic v Rina Saigo | 6-1,6-1 |
| WTA - Tokyo | 2022/09/18 05:55 | Chihiro Muramatsu v Rina Saigo | 6-2,3-6,0-6 |
| WTA - Tokyo | 2022/09/17 08:35 | Rina Saigo v Sophie Chang | 6-4,6-0 |
| ITF - W60 Praga | 2022/08/28 12:20 | Denise Hrdinkova v Rina Saigo | 6-3,6-3 |
| ITF - W60 Prerov | 2022/08/24 08:00 | Rina Saigo v Barbora Palicova | 6-3,3-6,4-6 |
| ITF - W60 Prerov | 2022/08/23 08:00 | Rina Saigo v Anna Turati | 4-6,7-6,10-8 |
| ITF - W60 Prerov | 2022/08/22 08:00 | Angelica Moratelli v Rina Saigo | 3-6,2-6 |
| ITF - W25 Mogyorod | 2022/08/18 11:20 | Rina Saigo v Brenda Fruhvirtova | 2-6,1-6 |
| WTA - Tokyo | 2022/09/17 11:25 | Haruna Arakawa v Xiaodi You | 6-3,1-6,0-6 |
| ITF - W25 Foxhills | 2022/08/02 11:30 | Haruna Arakawa v Xinyu Gao | 1-6,0-6 |
| ITF - W25 Nottingham | 2022/07/26 15:20 | Julie Belgraver v Haruna Arakawa | 6-2,4-6,6-2 |
| ITF - W25 Figueira Da Foz | 2022/07/20 14:40 | Jamie Loeb v Haruna Arakawa | 6-2,6-2 |
| ITF - W25 Guimaraes | 2022/07/13 15:05 | Haruna Arakawa v Erika Sema | 1-6,2-6 |
| ITF - W25 Corroios-Seixal | 2022/07/07 13:15 | Lin Zhu v Haruna Arakawa | 6-1,6-3 |
| ITF - W25 Corroios-Seixal | 2022/07/05 09:30 | Haruna Arakawa v Pei-Chi Lee | 6-4,6-4 |
| ITF - W25 Porto | 2022/06/30 11:50 | Alana Parnaby v Haruna Arakawa | 6-4,6-4 |