Stadium: Court 3 Round: 25 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 Osaka Qual | 2018/04/07 02:30 | Kisa Yoshioka v Ji-Hee Choi | 6-4,2-6,4-6 |
| ITF Women Toyota Qual | 2018/03/11 01:00 | Kisa Yoshioka v Julia Lohoff | 3-6,4-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Kisa Yoshioka v Sang Hee Park | 6-1,6-1 |
| ITF Women Hamamatsu | 2017/10/18 00:00 | Ayano Shimizu v Kisa Yoshioka | 6-4,6-3 |
| ITF Women Makinohara | 2017/10/13 00:30 | Momoko Kobori v Kisa Yoshioka | 4-6,6-2,7-6 |
| ITF Women Makinohara | 2017/10/12 01:45 | Kisa Yoshioka v Nagi Hanatani | 6-4,3-6,6-1 |
| ITF Women Makinohara | 2017/10/10 01:45 | Michiru Furuya v Kisa Yoshioka | 1-6,6-4,2-6 |
| ITF Women Hamamatsu Qual | 2016/10/17 02:30 | Kisa Yoshioka v Kumi So | 5-7,6-3,4-6 |