Stadium: Court 3 Round: 26 Ground: Synthetic outdoor
| ITF Women Toyota Qual | 2018/03/11 03:30 | Riko Sawayanagi v Mayu Iwai | 6-0,1-6,2-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Riko Sawayanagi v Himari Sato | 7-5,6-0 |
| ITF Women Mildura | 2018/03/06 01:05 | Maddison Inglis v Riko Sawayanagi | 6-0,6-2 |
| ITF Women Perth Qual | 2018/02/19 05:05 | Riko Sawayanagi v Lulu Sun | 2-6,3-6 |
| ITF Women Perth Qual | 2018/02/18 03:00 | Riko Sawayanagi v Ramu Ueda | 6-3,7-5 |
| ITF Women Perth | 2018/02/15 02:00 | Riko Sawayanagi v Mai Minokoshi | 1-6,1-6 |
| ITF Women Perth Qual | 2018/02/12 04:35 | Riko Sawayanagi v Maryna Chernyshova | 6-4,6-2 |
| ITF Women Perth Qual | 2018/02/11 02:00 | Riko Sawayanagi v Elizabeth James | 6-1,6-1 |
| ITF Women Hong Kong | 2018/06/20 03:30 | Miyabi Inoue v Mai Hontama | 4-6,3-6 |
| ITF Women Hong Kong | 2018/06/19 05:00 | Miyabi Inoue v Sakura Hondo | 6-4,7-6 |
| ITF Women Singapore | 2018/06/12 04:40 | Miyabi Inoue v Lynelle E T Lim | 6-2,6-1 |
| ITF Women Singapore | 2018/06/06 02:00 | Pei-Chi Lee v Miyabi Inoue | 6-1,4-6,6-3 |
| ITF Women Singapore | 2018/06/04 06:20 | Ji-Hee Choi v Miyabi Inoue | 2-6,4-6 |
| ITF Women Karuizawa | 2018/05/27 02:00 | Miyabi Inoue v Momoko Kobori | 0-6,2-6 |
| ITF Women Karuizawa | 2018/05/26 01:00 | Abbie Myers v Miyabi Inoue | 6-7,2-6 |
| ITF Women Karuizawa | 2018/05/25 02:50 | Miyabi Inoue v Sakura Hondo | 6-3,6-4 |