Stadium: Court 8 Round: 26
| ITF Women Iizuka | 2016/09/27 02:40 | Yoshitomi, Aiko v Chang, Kai-Chen | 2-6,1-6 |
| ITF Women Daegu | 2018/06/20 04:35 | Yoshitomi, Aiko v Kim, Cherry | 6-4,6-0 |
| ITF Women Gyeongsan | 2018/06/13 02:00 | Yoshitomi, Aiko v Eunhye Lee | 1-6,2-6 |
| ITF Women Sangju | 2018/06/07 01:00 | Yoshitomi, Aiko v Hosonuma, Chisa | 5-7,3-6 |
| ITF Women Sangju | 2018/06/05 03:50 | Yoshitomi, Aiko v Ahn, Yu Jin | 6-1,6-1 |
| Karuizawa, Singles W-WITF-JPN-10A | 2018/05/22 01:00 | Tammi Patterson v Yoshitomi, Aiko | 6-4,6-4 |
| ITF Women Kurume Qual | 2018/05/15 01:00 | Myers, Abbie v Yoshitomi, Aiko | 6-1,7-6 |
| ITF Women Kurume Qual | 2018/05/13 07:00 | Yoshitomi, Aiko v Ueda, Ramu | 6-3,6-3 |
| ITF Women Fukuoka | 2018/05/09 05:35 | Su Jeong Jang v Yoshitomi, Aiko | 6-1,6-2 |
| ITF Women Daegu | 2018/06/20 02:45 | Michika Ozeki v Chang, Kai-Chen | 2-6,3-6 |
| Kofu, Singles W-WITF-JPN-02A | 2018/06/15 04:30 | Mai Hontama v Chang, Kai-Chen | 6-3,6-3 |
| Kofu, Singles W-WITF-JPN-02A | 2018/06/14 01:00 | Miyamoto, Ayumi v Chang, Kai-Chen | 3-6,7-5,4-6 |
| Kofu, Singles W-WITF-JPN-02A | 2018/06/13 02:45 | Matsumoto, Ari v Chang, Kai-Chen | 2-6,6-7 |
| ITF Women Changwon | 2018/05/23 01:00 | Chang, Kai-Chen v Silich, Alina | 4-6,6-7 |
| ITF Women Incheon | 2018/05/16 03:10 | Hsu, Ching Wen v Chang, Kai-Chen | 6-0,6-3 |
| ITF Women Goyang | 2018/05/08 03:05 | Choi, Ji-Hee v Chang, Kai-Chen | 6-4,6-4 |
| ITF Women Kashiwa Qual | 2018/04/01 03:30 | Chang, Kai-Chen v Ninomiya, Makoto | 6-1,6-7,7-6 |