Stadium: COURT C Round: 25 Ground: Synthetic outdoor
| ITF Women Makinohara | 2018/10/08 02:05 | Honoka Kobayashi v Erina Hayashi | 6-7,4-6 |
| ITF W25 Makinohara | 2019/10/08 02:30 | Honoka Kobayashi v Miyu Nakashima | 6-2,4-6,11-9 |
| ITF W25 Makinohara | 2019/10/07 03:30 | Honoka Kobayashi v Arisa Abe | 6-0,6-4 |
| ITF W15 Anning | 2019/09/24 04:40 | Sowjanya Bavisetti v Honoka Kobayashi | 6-0,7-6 |
| ITF W15 Anning | 2019/09/19 02:00 | Zhibek Kulambayeva v Honoka Kobayashi | 5-7,7-6,6-2 |
| ITF W15 Anning | 2019/09/18 04:20 | Wei Zheng v Honoka Kobayashi | 1-6,4-6 |
| ITF W15 Anning | 2019/09/16 04:25 | Honoka Kobayashi v Cong Ying Zhao | 6-0,1-6,10-6 |
| ITF W15 Anning | 2019/09/15 05:55 | Honoka Kobayashi v Shuoran Wang | 6-4,7-5 |
| ITF W25 Kyoto | 2019/09/02 00:00 | Robu Kajitani v Honoka Kobayashi | 6-2,6-4 |
| WTA Hiroshima | 2019/09/08 02:00 | Erina Hayashi v Leylah Annie Fernandez | 0-6,4-6 |
| ITF W25 Kyoto | 2019/09/03 02:25 | Erina Hayashi v Nagi Hanatani | 5-7,6-4,2-6 |
| ITF W25 Nanao | 2019/08/30 04:00 | Junri Namigata v Erina Hayashi | 6-3,6-2 |
| ITF W25 Nanao | 2019/08/29 02:00 | Erina Hayashi v Yuki Naito | 7-6,6-3 |
| ITF W25 Nanao | 2019/08/27 04:55 | Erina Hayashi v Hiromi Abe | 6-4,3-6,6-0 |
| ITF W25 Tsukuba | 2019/08/22 02:20 | Momoko Kobori v Erina Hayashi | 7-6,7-5 |
| 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 |