Stadium: Court 11 Round: 27 Ground: Hardcourt outdoor
| ITF - W25 Karuizawa | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| ITF - W25 Hong Kong | 2019/05/31 05:20 | Abigail Tere-Apisah v Erina Hayashi | 6-7,1-6 |
| ITF - W25 Hong Kong | 2019/05/30 02:00 | Erina Hayashi v Wing Kiu Jacqueline Lam | 6-1,6-0 |
| ITF - W25 Hong Kong | 2019/05/28 08:00 | Erina Hayashi v Sakura Hosogi | 4-6,6-3,14-12 |
| ITF - W25 Karuizawa | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| ITF - W25 Karuizawa | 2019/05/24 01:00 | Naomi Broady v Erina Hayashi | 3-6,2-6 |
| ITF - W25 Karuizawa | 2019/05/23 01:00 | Erina Hayashi v Kanako Morisaki | 7-5,6-4 |
| ITF - W25 Karuizawa | 2019/05/22 02:25 | Himeno Sakatsume v Erina Hayashi | 6-2,6-7,1-6 |
| ITF - W25 Karuizawa | 2019/05/21 04:00 | Erina Hayashi v Hiromi Abe | 6-2,6-3 |
| ITF - W25 Hong Kong | 2019/05/31 04:30 | Anastasia E Nefedova v Momoko Kobori | 3-6,1-6 |
| ITF - W25 Hong Kong | 2019/05/30 02:00 | Nastja Kolar v Momoko Kobori | 1-6,1-6 |
| ITF - W25 Karuizawa | 2019/05/26 02:00 | Momoko Kobori v Jovana Jaksic | 1-6,6-4,5-7 |
| ITF - W25 Karuizawa | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| ITF - W25 Karuizawa | 2019/05/24 01:00 | Momoko Kobori v Mai Hontama | 6-4,1-6,7-5 |
| ITF - W25 Karuizawa | 2019/05/22 02:30 | Momoko Kobori v Ena Shibahara | 3-6,7-5,6-3 |
| ITF - W60 Kurume | 2019/05/15 03:25 | Naho Sato v Momoko Kobori | 6-2,6-1 |
| ITF - W60 Fukuoka | 2019/05/09 03:20 | Momoko Kobori v Emina Bektas | 6-7,1-6 |