Stadium: Court 4 Round: 45
| ITF Women Osaka | 2018/04/11 02:45 | Risa Ushijima v En Shuo Liang | 1-6,4-6 |
| ITF Women Osaka Qual | 2018/04/09 01:00 | Ange Oby Kajuru v Risa Ushijima | 3-6,2-6 |
| ITF Women Osaka Qual | 2018/04/08 02:00 | Mayuka Aikawa v Risa Ushijima | 4-6,1-6 |
| ITF Women Kashiwa Qual | 2018/04/01 00:30 | Karman Kaur Thandi v Risa Ushijima | 6-3,6-1 |
| ITF Women Kofu | 2018/03/28 01:00 | Karman Kaur Thandi v Risa Ushijima | 6-3,6-3 |
| ITF Women Kofu Qual | 2018/03/26 04:40 | Natsumi Koshino v Risa Ushijima | 2-6,6-4,2-6 |
| ITF Women Kofu Qual | 2018/03/25 04:00 | Suzuka Furukawa v Risa Ushijima | 3-6,0-6 |
| ITF Women Kofu Qual | 2018/03/24 07:00 | Robu Kajitani v Risa Ushijima | 0-6,7-6,2-6 |
| ITF Women Kurume Qual | 2017/05/14 00:30 | Meina Aratake v Louise Lampla | 0-6,3-6 |