| ITF Women Karuizawa | 2018/05/24 03:55 | Ayaka Okuno v Abbie Myers | 2-6,3-6 |
| ITF Women Karuizawa | 2018/05/23 01:00 | Anastasia E Nefedova v Ayaka Okuno | 7-6,3-6,4-6 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Sakura Hondo v Ayaka Okuno | 6-7,6-4,7-6 |
| ITF Women Fukuoka Qual | 2018/05/06 07:05 | Akari Inoue v Ayaka Okuno | 6-1,6-4 |
| ITF Women Gifu Qual | 2018/04/29 03:10 | Mai Hontama v Ayaka Okuno | 5-7,7-6,6-2 |
| ITF Women Quanzhou Qual | 2018/04/21 05:45 | Ao Gai v Ayaka Okuno | 6-3,6-4 |
| ITF Women Kashiwa Qual | 2018/04/01 03:00 | Ayaka Okuno v Shiho Akita | 1-6,0-6 |
| ITF Women Kofu Qual | 2018/03/25 02:30 | Ayaka Okuno v Alina Silich | 1-6,1-6 |
| ITF Women Sangju Qual | 2018/06/05 02:05 | Hyojung Yea v Mi Seong Sim | 6-0,6-3 |
| ITF Women Sangju Qual | 2018/06/04 03:30 | Chihiro Takayama v Hyojung Yea | 2-6,1-6 |
| ITF Women Sangju Qual | 2018/06/03 02:00 | Hyojung Yea v Eun Se Jang | 6-2,6-3 |
| ITF Women Changwon Qual | 2018/05/22 01:00 | Dabin Kim v Hyojung Yea | 2-6,6-4,6-3 |
| ITF Women Changwon Qual | 2018/05/21 01:00 | Hyojung Yea v Se-Hyun Kim | 6-1,1-6,6-0 |
| ITF Women Changwon Qual | 2018/05/20 01:00 | Eun Ji Lee v Hyojung Yea | 2-6,0-6 |
| ITF Women Incheon Qual | 2018/05/13 02:00 | Alina Silich v Hyojung Yea | 6-4,2-6,7-6 |
| ITF Women Goyang Qual | 2018/05/07 01:00 | Hyojung Yea v Alicia Barnett | 1-6,4-6 |