Stadium: Court 9 Round: 25
| ITF Women Jakarta | 2018/07/20 02:00 | Zeel Desai v Okuno, Ayaka | 6-2,7-6 |
| ITF Women Jakarta | 2018/07/19 03:00 | Oshino, Suzuho v Okuno, Ayaka | 3-6,4-6 |
| ITF Women Jakarta | 2018/07/18 03:00 | Ani Vangelova v Okuno, Ayaka | 1-6,1-6 |
| ITF Women Solo | 2018/07/12 03:00 | Mana Ayukawa v Okuno, Ayaka | 6-0,4-6,6-3 |
| ITF Women Solo | 2018/07/11 02:30 | Oshino, Suzuho v Okuno, Ayaka | 6-7,4-6 |
| ITF Women Solo | 2018/07/10 07:20 | Snehal Mane v Okuno, Ayaka | 1-6,4-6 |
| ITF Women Daegu | 2018/06/21 01:00 | Hanna Chang v Okuno, Ayaka | 6-2,7-5 |
| ITF Women Daegu | 2018/06/20 02:10 | Eunhye Lee v Okuno, Ayaka | 6-3,2-6,5-7 |
| ITF Women Victoria | 2018/06/17 18:30 | Shah, Priyanka v Maegan Manasse | 5-7,3-6 |