| ITF Women Fort Worth | 2018/07/31 17:20 | Dominique Schaefer v Ayaka Okuno | 6-4,6-3 |
| ITF Women Evansville | 2018/07/25 18:25 | Ayaka Okuno v Priyanka Shah | 6-7,1-6 |
| ITF Women Jakarta | 2018/07/20 02:00 | Zeel Desai v Ayaka Okuno | 6-2,7-6 |
| ITF Women Jakarta | 2018/07/19 03:00 | Suzuho Oshino v Ayaka Okuno | 3-6,4-6 |
| ITF Women Jakarta | 2018/07/18 03:00 | Ani Vangelova v Ayaka Okuno | 1-6,1-6 |
| ITF Women Solo | 2018/07/12 03:00 | Mana Ayukawa v Ayaka Okuno | 6-0,4-6,6-3 |
| ITF Women Solo | 2018/07/11 02:30 | Suzuho Oshino v Ayaka Okuno | 6-7,4-6 |
| ITF Women Solo | 2018/07/10 07:20 | Snehal Mane v Ayaka Okuno | 1-6,4-6 |
| ITF Women Wanfercee-Baulet | 2018/08/20 15:00 | Naoko Eto v Victoria Kalaitzis | 2-6,0-6 |
| ITF Women Savitaipale | 2018/07/31 07:00 | Merel Hoedt v Naoko Eto | 6-2,6-4 |
| ITF Women Sandelfjord | 2018/07/24 09:00 | Naoko Eto v Giorgie Jones | 6-3,3-6,5-7 |
| ITF Women Hong Kong Qual | 2018/06/17 02:00 | Naoko Eto v Yan-Tung Ki | 3-6,1-6 |
| ITF Women Baotou Qual | 2018/05/20 02:30 | Naoko Eto v Mei Xu Wu | 1-6,0-6 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Chisa Hosonuma v Naoko Eto | 6-0,6-0 |
| ITF Women Fukuoka Qual | 2018/05/06 01:00 | Mina Miyahara v Naoko Eto | 6-0,6-2 |
| ITF Women Gifu Qual | 2018/04/29 02:55 | Naoko Eto v Abbie Myers | 0-6,0-6 |