Stadium: Court B1 Round: 25 Ground: Hardcourt outdoor
| ITF Women Nonthaburi | 2018/08/13 02:00 | Michika Ozeki v Shiho Akita | 6-1,6-2 |
| ITF Women Nonthaburi | 2018/08/06 02:30 | Shiho Akita v Rutuja Bhosale | 6-4,1-6,6-2 |
| ITF Women Granby | 2018/07/24 22:25 | Astra Sharma v Shiho Akita | 7-6,6-1 |
| ITF Women Gatineau | 2018/07/16 14:00 | Sophie Chang v Shiho Akita | 6-4,5-7,6-1 |
| ITF Women Honolulu | 2018/07/10 23:20 | Usue Maitane Arconada v Shiho Akita | 6-0,1-6,7-6 |
| ITF Women Daegu | 2018/06/20 01:00 | Shiho Akita v Hanna Chang | 0-6,5-7 |
| ITF Women Karuizawa | 2018/05/22 01:00 | Chihiro Muramatsu v Shiho Akita | 6-2,6-4 |
| ITF Women Kurume | 2018/05/15 02:00 | Ayano Shimizu v Shiho Akita | 6-2,6-4 |
| ITF Women Nonthaburi Qual | 2018/07/15 04:30 | Patcharin Cheapchandej v Risa Ushijima | 6-3,6-4 |
| ITF Women Nonthaburi Qual | 2018/07/14 06:25 | Rada Manataweewat v Risa Ushijima | 2-6,1-6 |
| ITF Women Nonthaburi | 2018/07/11 02:00 | Risa Ushijima v Na-Lae Han | 6-7,1-6 |
| ITF Women Nonthaburi | 2018/07/09 04:25 | Risa Ushijima v Nina Stadler | 6-3,7-6 |
| ITF Women Nonthaburi Qual | 2018/07/08 02:00 | Claudia Hoste Ferrer v Risa Ushijima | 2-6,1-6 |
| ITF Women Nonthaburi Qual | 2018/07/07 05:40 | Romklao Yuenyao v Risa Ushijima | 2-6,1-6 |
| ITF Women Daegu | 2018/06/20 01:00 | Risa Ushijima v Na-Lae Han | 3-6,5-7 |
| ITF Women Kofu | 2018/06/12 01:00 | Shiori Fukuda v Risa Ushijima | 6-3,6-3 |