Stadium: MTA Center Court Round: 62 Ground: Clay
| ITF W15 Antalya | 2023/11/05 07:00 | Koharu Niimi v Zoziya Kardava | 3-6,0-6 |
| UTR Pro Takasaki Women | 2023/09/10 00:00 | Koharu Niimi v Mua Shigeta | 5-7,3-6 |
| UTR Pro Takasaki Women | 2023/09/09 07:12 | Koharu Niimi v Annette Robertson | 6-1,6-2 |
| 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 | 2023/11/05 07:00 | Franziska Sziedat v Rebeca Maria Tudose | 6-0,6-0 |
| ITF W15 Heraklion | 2023/10/16 07:00 | Rebeca Maria Tudose v Stefanie Auer | 1-6,4-6 |
| ITF W25 Slobozia | 2023/09/18 07:00 | Rebeca Maria Tudose v Iulia Andreea Ionescu | 2-6,1-6 |
| ITF W25 Slobozia | 2023/09/17 07:00 | Andreea Stefania Dinca v Rebeca Maria Tudose | 7-6,6-7,4-10 |
| ITF W15 Buzau | 2023/09/03 09:30 | Krystyna Pochtovyk v Rebeca Maria Tudose | 6-1,6-1 |
| ITF W15 Brasov | 2023/08/27 07:00 | Rebeca Maria Tudose v Ana-Maria Gavrilovici | 3-6,3-6 |
| ITF W15 Bacau | 2023/07/09 09:30 | Rebeca Maria Tudose v Katerina Mandelikova | 2-6,3-6 |
| ITF W15 Bucharest | 2023/06/20 08:35 | Ioana Zvonaru v Rebeca Maria Tudose | 6-1,6-1 |