Round: 25 Ground: Clay
| ITF Women Lubbock | 2018/09/15 14:00 | Safiya Carrington v Rushri Wijesundera | 6-1,3-6,6-3 |
| ITF Women Yeongwol | 2018/08/29 01:00 | Rushri Wijesundera v Chisa Hosonuma | 0-6,6-1,4-6 |
| ITF Women Gimcheon | 2018/08/23 01:00 | Hanna Chang v Rushri Wijesundera | 6-3,7-5 |
| ITF Women Gimcheon | 2018/08/22 01:00 | Rushri Wijesundera v Subin Park | 6-2,2-6,6-2 |
| ITF Women Gimcheon | 2018/08/15 01:00 | Rushri Wijesundera v Sakura Hosogi | 2-6,4-6 |
| ITF Women Dublin | 2018/08/02 13:25 | Julie Byrne v Rushri Wijesundera | 7-6,7-5 |
| ITF Women Dublin | 2018/07/31 09:00 | Taro Keens v Rushri Wijesundera | 6-4,3-6,2-6 |
| ITF Women Sandelfjord | 2018/07/23 09:00 | Stephanie Nemtsova v Rushri Wijesundera | 6-4,6-7,6-1 |