Stadium: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF W25 Hamamatsu | 2022/10/13 02:30 | Ayumi Koshiishi v Eri Shimizu | 6-3,4-6,2-6 |
| ITF Women Nishi-Tama | 2017/03/20 01:00 | Ayumi Koshiishi v Eri Shimizu | 6-3,7-5 |
| ITF W35 Nakhon Si Thammarat | 2024/07/03 02:00 | Sonal Patil v Ayumi Koshiishi | 2-6,7-6,3-6 |
| ITF W35 Daegu | 2024/06/05 01:00 | Ayumi Koshiishi v Rina Saigo | 2-6,7-5,1-6 |
| ITF W35 Daegu | 2024/06/03 04:55 | Ayumi Koshiishi v Hwiwon Wi | 6-1,6-1 |
| ITF W35 Daegu | 2024/06/02 06:30 | Ayumi Koshiishi v Yesung Choo | 6-3,6-0 |
| ITF W35 Changwon | 2024/05/26 01:00 | Jeong Moon v Ayumi Koshiishi | 7-6,0-6,10-4 |
| ITF W50 Goyang | 2024/05/22 03:05 | Ayumi Koshiishi v Zongyu Li | 4-6,1-6 |
| ITF W50 Goyang | 2024/05/20 03:10 | Rina Saigo v Ayumi Koshiishi | 6-7,5-7 |
| ITF W75 Kurume | 2024/05/13 03:30 | Miho Kuramochi v Ayumi Koshiishi | 6-3,6-0 |
| ITF W35 Nakhon Si Thammarat | 2024/07/02 04:15 | Kamonwan Yodpetch v Eri Shimizu | 1-6,2-6 |
| ITF W35 Taipei | 2024/06/26 01:45 | Kyoka Okamura v Eri Shimizu | 6-2,6-0 |
| ITF W35 Taipei | 2024/06/18 06:30 | Eri Shimizu v En Shuo Liang | 3-6,5-7 |
| ITF W35 Daegu | 2024/06/09 05:00 | Eri Shimizu v Dayeon Back | 6-4,2-6,3-6 |
| ITF W35 Daegu | 2024/06/08 01:00 | Sakura Hosogi v Eri Shimizu | 4-6,6-2,6-7 |
| ITF W35 Daegu | 2024/06/07 01:00 | Ayano Shimizu v Eri Shimizu | 7-5,3-6,0-6 |
| ITF W35 Daegu | 2024/06/06 01:00 | Eri Shimizu v Zongyu Li | 6-4,6-4 |
| ITF W35 Daegu | 2024/06/05 00:50 | Eri Shimizu v Ye Eun Kim | 6-0,6-2 |