| UTR Pro Takasaki Women | 2023/09/09 01:15 | Yuno Kitahara v Koharu Niimi | 6-4,6-2 |
| UTR Pro Takasaki Women | 2023/09/07 02:44 | Tomoko Kato v Koharu Niimi | 6-2,7-6 |
| UTR Pro Takasaki Women | 2023/09/06 03:00 | Sayuri Hata v Koharu Niimi | 1-6,6-3,4-6 |
| ITF W15 Antalya | 2023/03/30 08:00 | Martha Matoula v Koharu Niimi | 6-1,6-2 |
| ITF W15 Antalya | 2023/03/29 13:40 | Karolina Kozakova v Koharu Niimi | 1-6,3-6 |
| ITF W15 Antalya | 2023/03/28 09:10 | Koharu Niimi v Ines Faltinger | 6-1,6-1 |
| ITF W15 Antalya | 2023/03/27 08:50 | Xenia Bandurowska v Koharu Niimi | 4-6,5-7 |
| ITF W15 Antalya | 2023/03/26 08:00 | Elizaveta Masnaia v Koharu Niimi | 2-6,3-6 |
| UTR Pro Takasaki Women | 2023/09/06 00:00 | Miyu Nakashima v Annette Robertson | 6-3,6-2 |
| UTR Pro Takasaki Women | 2023/09/04 01:54 | Anna Rahman v Annette Robertson | 6-4,6-1 |
| UTR Pro Noda Women | 2023/08/26 01:45 | Noelani Teso v Annette Robertson | 6-3,6-1 |
| UTR Pro Noda Women | 2023/08/24 03:00 | Kaili Demi Teso v Annette Robertson | 6-1,6-0 |
| UTR Pro Noda Women | 2023/08/22 04:18 | Kanna Soeda v Annette Robertson | 6-3,6-2 |
| ITF W15 Sapporo | 2023/08/07 05:00 | Kanon Sawashiro v Annette Robertson | 6-0,6-0 |
| ITF W15 Lakewood | 2023/07/04 17:00 | Makayla Mills v Annette Robertson | 6-3,6-2 |
| ITF W15 Lakewood | 2023/07/03 17:00 | Annette Robertson v Kristen Seabury | 6-0,6-3 |