Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF Women Norman | 2018/11/11 17:30 | Ayaka Okuno v Dalayna Hewitt | 1-6,4-6 |
| ITF Women Norman | 2018/11/10 08:30 | Ayaka Okuno v Khrystyna Vozniak | 6-3,6-3 |
| ITF Women Lawrence | 2018/11/04 16:30 | Emma Jackson v Ayaka Okuno | 7-6,6-4 |
| ITF Women Lawrence | 2018/11/03 16:00 | Miranda Poile v Ayaka Okuno | 6-2,0-6,1-6 |
| ITF Women Toronto | 2018/10/27 15:25 | Ayaka Okuno v Kennedy Shaffer | 3-6,0-6 |
| ITF Women Saguenay | 2018/10/20 20:20 | Dasha Ivanova v Ayaka Okuno | 6-3,7-5 |
| ITF Women Charleston | 2018/10/01 13:00 | Ayaka Okuno v Jaeda Daniel | 2-6,0-6 |
| ITF Women Charleston | 2018/09/30 13:00 | Ayaka Okuno v Allie Gretkowski | 6-1,7-5 |
| ITF Women Hamamatsu | 2018/10/14 00:00 | Haine Ogata v Mitsumi Kawasaki | 1-6,6-4,4-6 |
| ITF Women Makinohara | 2018/10/07 03:00 | Haine Ogata v Suzuho Oshino | 6-1,3-6,2-6 |
| ITF Women Nonthaburi Qual | 2018/07/14 05:45 | Haine Ogata v Nina Stadler | 2-6,1-6 |
| ITF Women Hong Kong | 2018/07/10 03:50 | Ayumi Koshiishi v Haine Ogata | 6-1,6-4 |
| ITF Women Daegu Qual | 2018/06/18 03:30 | Sang Hee Park v Haine Ogata | 6-2,6-1 |
| ITF Women Daegu Qual | 2018/06/17 02:00 | So-Hee Yoon v Haine Ogata | 3-6,1-6 |
| ITF Women Gyeongsan | 2018/06/14 03:45 | Haine Ogata v Ho Ching Wu | 3-6,6-7 |
| ITF Women Gyeongsan | 2018/06/13 01:00 | Josephine Boualem v Haine Ogata | 6-3,2-6,2-6 |