Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF W100 Takasaki | 2023/11/13 00:55 | Joanna Garland v Ena Koike | 6-7,6-3,1-6 |
| ITF W60 Rome, GA | 2023/10/04 18:35 | Raveena Kingsley v Ena Koike | 6-7,6-3,6-2 |
| ITF W60 Rome, GA | 2023/10/03 14:00 | Sara Daavettila v Ena Koike | 7-5,3-6,6-7 |
| ITF W60 Rome, GA | 2023/10/02 16:30 | Adaugo Ukaegbu v Ena Koike | 1-6,0-6 |
| ITF W40 Palma del Río | 2023/06/28 18:45 | Ena Koike v Eva Guerrero Alvarez | 2-6,2-6 |
| ITF W40 Palma del Río | 2023/06/26 07:30 | Ena Koike v Nagi Hanatani | 4-6,6-3,7-5 |
| ITF W40 Palma del Río | 2023/06/25 06:30 | Dalayna Hewitt v Ena Koike | 4-6,1-6 |
| ITF W25 Zaragoza | 2023/06/20 09:30 | Jamie Loeb v Ena Koike | 7-6,7-5 |
| ITF W100 Takasaki | 2023/11/13 01:00 | Erika Sema v Tina Nadine Smith | 6-4,5-7,6-4 |
| UTR Pro Noda - naised | 2023/10/22 00:00 | Aoi Ito v Erika Sema | 0-6,4-5 |
| UTR Pro Noda - naised | 2023/10/21 01:30 | Mana Ayukawa v Erika Sema | 1-6,1-6 |
| UTR Pro Noda - naised | 2023/10/20 01:30 | Kurumi Tamura v Erika Sema | 2-6,3-6 |
| UTR Pro Noda - naised | 2023/10/19 02:22 | Naomi Hagi v Erika Sema | 2-6,1-6 |
| ITF W25 Cairns | 2023/10/13 03:20 | Destanee Aiava v Erika Sema | 7-5,6-1 |
| ITF W25 Cairns | 2023/10/12 03:15 | Mia Horvit v Erika Sema | 2-6,3-6 |
| ITF W25 Cairns | 2023/10/11 03:15 | Elena Micic v Erika Sema | 3-6,2-6 |