Stadium: C Round: 62
| 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 Launceston | 2018/02/06 23:00 | Alexandra Bozovic v Riko Sawayanagi | 6-0,6-3 |
| ITF Women Launceston Qual | 2018/02/04 23:00 | Riko Sawayanagi v Nagi Hanatani | 6-4,6-3 |
| ITF Women Perth Qual | 2018/02/17 05:00 | Himari Sato v Jessica Moore | 6-7,0-6 |
| ITF Women Perth | 2018/02/14 02:00 | Himari Sato v Ellen Perez | 1-6,4-6 |
| ITF Women Perth Qual | 2018/02/12 02:00 | Miyabi Inoue v Himari Sato | 3-6,6-2,4-6 |
| ITF Women Perth Qual | 2018/02/11 02:00 | Himari Sato v Ramu Ueda | 6-3,5-7,6-3 |
| ITF Women Perth Qual | 2018/02/10 01:00 | Renee Mcbryde v Himari Sato | 4-6,6-4,6-7 |
| ITF Women Launceston | 2018/02/07 01:35 | Himari Sato v Asia Muhammad | 3-6,1-6 |
| ITF Women Launceston Qual | 2018/02/05 00:25 | Himari Sato v Jennifer Elie | 6-1,3-6,6-3 |
| ITF Women Launceston Qual | 2018/02/04 02:00 | Sara Tomic v Himari Sato | 2-6,2-6 |