Stadium: C Round: 26 Ground: Hardcourt outdoor
| Toyota, Singles W-WITF-JPN-02A | 2018/03/14 01:00 | Ushijima, Risa v Ikeda, Ryoko | 6-2,6-3 |
| ITF Women Toyota Qual | 2018/03/12 03:30 | Ushijima, Risa v Eguchi, Misa | 4-6,6-3,7-6 |
| ITF Women Toyota Qual | 2018/03/11 01:00 | Kanako Morisaki v Ushijima, Risa | 3-6,1-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Hasegawa, Mami v Ushijima, Risa | 1-6,6-3,2-6 |
| Yokohama, Singles Qualifying W-WITF-JPN-01B | 2018/03/05 03:00 | Ushijima, Risa v Moyuka Uchijima | 4-6,6-7 |
| Yokohama, Singles Qualifying W-WITF-JPN-01B | 2018/03/04 07:30 | Robin Anderson v Ushijima, Risa | 7-6,6-7,1-6 |
| Perth, Simples W-WITF-AUS-05A | 2018/02/22 06:10 | Jaimee Fourlis v Ushijima, Risa | 6-2,6-3 |
| Perth, Simples W-WITF-AUS-05A | 2018/02/21 03:35 | Bozicevic, Isabella v Ushijima, Risa | 0-6,4-6 |
| Toyota, Singles W-WITF-JPN-02A | 2018/03/14 05:40 | Chang, Kai-Chen v Ayla Aksu | 3-6,2-6 |
| Yokohama, Singles W-WITF-JPN-01B | 2018/03/08 02:25 | Moyuka Uchijima v Ayla Aksu | 6-4,6-3 |
| Yokohama, Singles W-WITF-JPN-01B | 2018/03/07 01:00 | Erika Sema v Ayla Aksu | 2-6,0-6 |
| Altenkirchen, Singles W-WITF-GER-02A | 2018/02/22 16:15 | Camilla Rosatello v Ayla Aksu | 6-4,6-0 |
| Altenkirchen, Singles W-WITF-GER-02A | 2018/02/20 12:00 | Honcova, Michaela v Ayla Aksu | 6-4,4-6,6-7 |
| Fed Cup, Groupe Mondial | 2018/02/09 08:00 | Magdalena Frech v Ayla Aksu | 6-2,6-1 |
| Fed Cup, Groupe Mondial | 2018/02/07 08:00 | Ayla Aksu v Anastasija Sevastova | 4-6,3-6 |
| Wesley Chapel, Singles W-WITF-USA-03A | 2018/01/25 16:45 | Ayla Aksu v Whitney Osuigwe | 2-6,1-6 |