Stadium: Court 4 Round: 26 Ground: Clay
| ITF W15 Gimcheon | 2019/06/12 01:00 | Ayumi Koshiishi v Dayeon Back | 7-5,6-2 |
| ITF W35 Nagpur | 2024/03/06 07:05 | Dayeon Back v Anjali Rathi | 6-1,6-1 |
| ITF W35 Traralgon | 2024/02/20 02:40 | Dayeon Back v Destanee Aiava | 4-6,1-6 |
| ITF W60 Gold Coast | 2023/11/30 01:30 | Dayeon Back v Miho Kuramochi | 5-7,3-6 |
| ITF W60 Gold Coast | 2023/11/29 02:30 | Seone Mendez v Dayeon Back | 3-6,3-6 |
| ITF W60 Gold Coast | 2023/11/27 00:00 | Dayeon Back v Elena Micic | 3-6,6-2,6-4 |
| ITF W60 Gold Coast | 2023/11/25 23:00 | Dayeon Back v Roisin Gilheany | 3-6,7-5,6-2 |
| ITF W60 Brisbane | 2023/11/21 01:35 | Dayeon Back v Lea Ma | 0-6,4-6 |
| ITF W60 Brisbane | 2023/11/19 05:10 | Dayeon Back v Alana Subasic | 4-6,6-2,6-3 |
| ITF W35 Nagpur | 2024/03/06 04:30 | Ayumi Koshiishi v Diana Marcinkevica | 6-4,7-6 |
| ITF W35 Gurugram | 2024/02/28 07:30 | Ayumi Koshiishi v Sahaja Yamalapalli | 4-6,2-6 |
| ITF W50 Roehampton | 2024/02/11 13:40 | Isabelle Lacy v Ayumi Koshiishi | 6-3,6-4 |
| ITF W50 Edgbaston | 2024/02/05 09:55 | Lara Salden v Ayumi Koshiishi | 0-6,6-1,6-3 |
| ITF W50 Edgbaston | 2024/02/04 12:30 | Summer Yardley v Ayumi Koshiishi | 1-6,2-6 |
| ITF W35 Sharm El Sheikh | 2024/01/30 07:30 | Ayumi Koshiishi v Amelia Waligora | 4-6,4-6 |
| ITF W35 Monastir | 2024/01/22 08:30 | Ayumi Koshiishi v Saoirse Breen | 7-5,3-6,10-12 |
| ITF W25 Monastir | 2023/12/12 10:40 | Ayumi Koshiishi v Jenny Lim | 2-6,3-6 |