Stadium: Court B1 Round: 26 Ground: Hardcourt outdoor
| ITF W25 Hong Kong | 2019/06/01 02:00 | Erina Hayashi v Momoko Kobori | 7-5,6-2 |
| ITF W25 Karuizawa | 2019/05/25 01:00 | Momoko Kobori v Erina Hayashi | 6-4,6-3 |
| ITF W25 Tsukuba | 2019/08/21 01:30 | Momoko Kobori v Kotomi Takahata | 6-3,6-1 |
| ITF W80 Granby | 2019/07/24 18:45 | Mayo Hibi v Momoko Kobori | 6-2,6-4 |
| ITF W25 Gatineau | 2019/07/17 17:40 | Momoko Kobori v Marcela Zacarias | 5-7,2-6 |
| ITF W25 Saskatoon | 2019/07/11 16:00 | Momoko Kobori v Hanna Chang | 3-6,3-6 |
| ITF W25 Saskatoon | 2019/07/09 17:30 | Momoko Kobori v Isabelle Boulais | 7-6,1-6,6-4 |
| ITF W25 Jakarta | 2019/06/22 03:00 | Arianne Hartono v Momoko Kobori | 6-3,6-1 |
| ITF W25 Jakarta | 2019/06/21 02:00 | Miharu Imanishi v Momoko Kobori | 6-1,5-7,0-6 |
| ITF W25 Jakarta | 2019/06/20 03:00 | Michika Ozeki v Momoko Kobori | 4-6,2-6 |
| ITF W25 Tsukuba | 2019/08/20 04:55 | Yuuki Tanaka v Erina Hayashi | 6-1,3-6,2-6 |
| ITF W25 Taipei | 2019/07/31 02:00 | Erina Hayashi v Haruka Kaji | 4-6,2-6 |
| ITF W25 Aschaffenburg | 2019/07/18 11:00 | Erina Hayashi v Ekaterina Makarova | 1-6,2-6 |
| ITF W25 Aschaffenburg | 2019/07/17 14:25 | Quirine Lemoine v Erina Hayashi | 2-6,4-6 |
| ITF W25 Biella | 2019/07/02 10:30 | Erina Hayashi v Laura Pigossi | 6-7,3-6 |
| ITF W25 Biella | 2019/07/01 08:00 | Erina Hayashi v Marie Mettraux | 6-4,6-4 |
| ITF W25 Tarvisio | 2019/06/25 09:25 | Erina Hayashi v Rasheeda McAdoo | 3-6,6-2,11-13 |
| ITF W25 Hong Kong | 2019/06/01 08:00 | Ho Ching Wu v Erina Hayashi | 5-7,1-6 |