Stadium: Court 11 Round: 27 Ground: Hardcourt outdoor
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/31 05:20 | Tere-Apisah, Abigail v Erina Hayashi | 6-7,1-6 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/30 02:00 | Erina Hayashi v Lam, Wing Kiu Jacqueline | 6-1,6-0 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/28 08:00 | Erina Hayashi v Sakura Hosogi | 4-6,6-3,14-12 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/24 01:00 | Broady, Naomi v Erina Hayashi | 3-6,2-6 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/23 01:00 | Erina Hayashi v Kanako Morisaki | 7-5,6-4 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/22 02:25 | Himeno Sakatsume v Erina Hayashi | 6-2,6-7,1-6 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/21 04:00 | Erina Hayashi v Hiromi Abe | 6-2,6-3 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/31 04:30 | Nefedova, Anastasia Evgenyevna v Momoko Kobori | 3-6,1-6 |
| Hong Kong, Simples W-ITF-HKG-01B | 2019/05/30 02:00 | Kolar, Nastja v Momoko Kobori | 1-6,1-6 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/26 02:00 | Momoko Kobori v Jovic, J. | 1-6,6-4,5-7 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/24 01:00 | Momoko Kobori v Mai Hontama | 6-4,1-6,7-5 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/22 02:30 | Momoko Kobori v Ena Shibahara | 3-6,7-5,6-3 |
| Kurume, Singles W-ITF-JPN-11A | 2019/05/15 03:25 | Naho Sato v Momoko Kobori | 6-2,6-1 |
| Fukuoka, Singles W-ITF-JPN-10A | 2019/05/09 03:20 | Momoko Kobori v Emina Bektas | 6-7,1-6 |