Stadium: Court 1 Round: 28 Ground: Hardcourt outdoor
| ITF Women Hong Kong | 2018/07/13 03:00 | Sakura Hosogi v Ayumi Koshiishi | 3-6,6-4,6-3 |
| ITF W15 Monastir | 2021/05/21 08:30 | Kelia Le Bihan v Sakura Hosogi | 1-6,2-6 |
| ITF W15 Monastir | 2021/05/20 08:30 | Anastasia Sukhotina v Sakura Hosogi | 5-7,6-2,0-6 |
| ITF W15 Monastir | 2021/05/19 12:25 | Natsuho Arakawa v Sakura Hosogi | 1-6,0-6 |
| ITF W15 Monastir | 2021/05/13 08:30 | Angelica Raggi v Sakura Hosogi | 7-6,4-6,6-2 |
| ITF W15 Monastir | 2021/05/12 08:25 | Ferdaous Bahri v Sakura Hosogi | 0-6,4-6 |
| ITF W15 Sharm El Sheikh | 2021/03/21 07:00 | Sakura Hosogi v Eri Hozumi | 7-5,6-2 |
| ITF W15 Sharm El Sheikh | 2021/03/20 07:00 | Ayano Shimizu v Sakura Hosogi | 5-7,6-7 |
| ITF W15 Sharm El Sheikh | 2021/03/19 07:00 | Momoko Kobori v Sakura Hosogi | 3-6,4-6 |
| ITF W15 Monastir | 2021/05/21 08:25 | Angelica Raggi v Ayumi Koshiishi | 4-6,2-6 |
| ITF W15 Monastir | 2021/05/20 10:10 | Ayumi Koshiishi v Chiara Scholl | 6-2,6-3 |
| ITF W15 Monastir | 2021/05/19 08:30 | Jasmijn Gimbrere v Ayumi Koshiishi | 4-6,1-6 |
| ITF W15 Monastir | 2021/05/11 08:30 | Erika Sema v Ayumi Koshiishi | 6-3,7-6 |
| ITF W15 Monastir | 2021/05/07 11:40 | Miharu Imanishi v Ayumi Koshiishi | 4-6,6-2,6-4 |
| ITF W15 Monastir | 2021/05/06 10:20 | Ayumi Koshiishi v Gozal Ainitdinova | 6-1,6-1 |
| ITF W15 Monastir | 2021/05/04 09:00 | Ayumi Koshiishi v Olivia Gram | 6-2,6-1 |
| ITF W15 Monastir | 2021/05/03 15:30 | Ayumi Koshiishi v Tara Malik | 6-3,6-4 |