Stadium: COURT F Round: 26 Ground: Synthetic outdoor
| ITF W25 Makinohara | 2019/10/09 04:00 | Mayuka Aikawa v Eri Shimizu | 0-6,1-6 |
| ITF W15 Cancun | 2019/08/24 16:35 | Eri Shimizu v Pitak, Aleksandra | 6-7,6-4,4-6 |
| ITF W15 Cancun | 2019/08/23 14:00 | Eri Shimizu v Yoshitomi, Aiko | 6-4,6-1 |
| ITF W15 Cancun | 2019/08/22 16:40 | Kobelt, Madeleine v Eri Shimizu | 4-6,4-6 |
| ITF W15 Cancun | 2019/08/20 14:00 | Pitak, Katarzyna v Eri Shimizu | 3-6,3-6 |
| ITF W15 Cancun | 2019/08/16 15:00 | Eri Shimizu v Ingrid Gamarra Martins | 4-6,4-6 |
| ITF W15 Cancun | 2019/08/15 18:50 | Eri Shimizu v Katarina Kozarov | 6-3,7-5 |
| ITF W15 Cancun | 2019/08/14 16:30 | Wijesundera, Rushri v Eri Shimizu | 3-6,4-6 |
| ITF W25 Makinohara | 2019/10/09 02:10 | Kobayashi, Honoka v Erina Hayashi | 2-6,4-6 |
| Hiroshima, Japon | 2019/09/08 02:00 | Erina Hayashi v Fernandez, Leylah Annie | 0-6,4-6 |
| Kyoto, Qualifications Simples W-ITF-JPN-15A | 2019/09/03 02:25 | Erina Hayashi v Nagi Hanatani | 5-7,6-4,2-6 |
| ITF W25 Nanao | 2019/08/30 04:00 | Namigata, Junri 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 |
| Tsukuba, Singles W-ITF-JPN-13A | 2019/08/22 02:20 | Momoko Kobori v Erina Hayashi | 7-6,7-5 |
| Tsukuba, Singles W-ITF-JPN-13A | 2019/08/20 04:55 | Tanaka, Yuuki v Erina Hayashi | 6-1,3-6,2-6 |