Stadion: Court 3 Round: 25 Ground: Hardcourt outdoor
| ITF Damen - Hong Kong | 2018/07/13 03:00 | Sakura Hosogi v Ayumi Koshiishi | 3-6,6-4,6-3 |
| ITF Damen - W15 - Hua Hin | 2019/10/10 04:55 | Sakura Hosogi v Tamachan Momkoonthod | 1-6,3-6 |
| ITF Damen - W15 - Hua Hin | 2019/10/09 08:10 | Aunchisa Chanta v Sakura Hosogi | 6-3,2-6,2-6 |
| ITF Damen - W25 - Kyoto | 2019/09/05 02:20 | Sakura Hosogi v Akiko Omae | 5-7,1-6 |
| ITF Damen - W25 - Kyoto | 2019/09/04 01:00 | Michiru Furuya v Sakura Hosogi | 4-6,7-5,2-6 |
| ITF Damen - W25 - Kyoto | 2019/09/02 07:20 | Sakura Hosogi v Chisa Hosonuma | 6-2,6-2 |
| ITF Damen - W25 - Kyoto | 2019/09/02 04:00 | Sakura Hosogi v Nagisa Morimoto | 6-2,6-4 |
| ITF Damen - W25 - Nanao | 2019/08/27 01:00 | Miyabi Inoue v Sakura Hosogi | 6-3,6-7,7-5 |
| ITF Damen - W25 - Nanao | 2019/08/26 02:45 | Sakura Hosogi v Honoka Kobayashi | 3-6,7-6,8-10 |
| ITF Damen - W15 - Hua Hin | 2019/10/10 03:00 | Patcharin Cheapchandej v Ayumi Koshiishi | 6-1,6-3 |
| ITF Damen - W15 - Hua Hin | 2019/10/09 03:00 | Ayumi Koshiishi v Mananchaya Sawangkaew | 6-2,6-3 |
| ITF Damen - W25 - Kyoto | 2019/09/05 05:30 | Ayumi Koshiishi v Michika Ozeki | 0-6,3-6 |
| ITF Damen - W25 - Kyoto | 2019/09/04 04:25 | Miharu Imanishi v Ayumi Koshiishi | 3-6,4-6 |
| ITF Damen - W25 - Kyoto | 2019/09/02 04:00 | Ayumi Koshiishi v Utaka Kishigami | 7-5,7-6 |
| ITF Damen - W25 - Kyoto | 2019/09/02 00:00 | Ayumi Koshiishi v Hx Izabella Tan | 6-0,6-1 |
| ITF Damen - W25 - Nanao | 2019/08/27 01:00 | Ayumi Koshiishi v Anri Nagata | 4-6,0-6 |
| ITF Damen - W25 - Tsukuba | 2019/08/19 00:30 | Yui Chikaraishi v Ayumi Koshiishi | 2-6,6-2,10-7 |