Stadium: Court 2 Round: 62
| ITF Women Osaka Qual | 2018/04/08 02:00 | Erina Hayashi v Mai Hontama | 6-0,6-4 |
| ITF Women Osaka Qual | 2018/04/08 01:00 | Erina Hayashi v Furuya, Michiru | 6-3,6-3 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/20 02:40 | Erina Hayashi v Okuno, Ayaka | 0-6,7-6,3-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Yoshitomi, Aiko v Erina Hayashi | 6-2,6-1 |
| Manacor (Mallorca), Singles Quali W-WITF-ESP-01A | 2018/02/26 10:30 | Eden Silva v Erina Hayashi | 6-2,6-3 |
| Manacor (Mallorca), Singles Quali W-WITF-ESP-01A | 2018/02/23 09:35 | Erina Hayashi v Isabella Shinikova | 2-6,7-5,1-6 |
| Manacor (Mallorca), Singles Quali W-WITF-ESP-01A | 2018/02/20 14:00 | Adrover Gallego, Isabel v Erina Hayashi | 6-1,0-6,2-6 |
| Manacor (Mallorca), Singles Quali W-WITF-ESP-01A | 2018/02/15 09:00 | Isabella Shinikova v Erina Hayashi | 4-6,6-1,6-3 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Moyuka Uchijima v Ninomiya, Makoto | 3-6,4-6 |
| ITF Women Osaka Qual | 2018/04/08 01:00 | Haine Ogata v Ninomiya, Makoto | 2-6,3-6 |
| ITF Women Kashiwa Qual | 2018/04/01 03:30 | Chang, Kai-Chen v Ninomiya, Makoto | 6-1,6-7,7-6 |
| ITF Women Canberra | 2018/03/27 03:30 | Kimberly Birrell v Ninomiya, Makoto | 7-6,4-6,6-1 |
| ITF Women Canberra Qual | 2018/03/25 01:15 | Ninomiya, Makoto v Hetrel, Beatrice | 6-0,6-0 |
| ITF Women Canberra Qual | 2018/03/24 02:30 | Ninomiya, Makoto v Darcy Parke | 6-0,6-0 |
| ITF Women Canberra Qual | 2018/03/18 23:00 | Kaylah McPhee v Ninomiya, Makoto | 6-4,6-2 |
| ITF Women Canberra Qual | 2018/03/18 00:10 | Stojanovic, Jelena v Ninomiya, Makoto | 4-6,5-7 |