Stadium: Court 2 Round: 25
| ITF Women Karuizawa Qual | 2018/05/20 04:00 | Chie Kezuka v Reina Takahashi | 6-3,1-6,3-6 |
| ITF Women Kofu Qual | 2018/03/24 03:00 | Reina Takahashi v Shiho Akita | 4-6,1-6 |
| ITF Women Nishi-Tama | 2018/03/21 05:35 | Reina Takahashi v Rika Fujiwara | 6-7,7-6,3-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Rion Itaya v Reina Takahashi | 6-3,6-4 |
| ITF Women Tokyo Qual | 2017/11/05 03:00 | Reina Takahashi v Haruna Arakawa | 1-6,2-6 |
| ITF Women Tokyo Qual | 2017/11/04 04:15 | Reina Takahashi v Michiru Furuya | 6-2,6-3 |
| ITF Women Hamamatsu Qual | 2017/10/16 03:30 | Reina Takahashi v Minami Shuto | 4-6,1-6 |
| ITF Women Hamamatsu Qual | 2017/10/14 01:00 | Arisa Abe v Reina Takahashi | 3-6,6-2,2-6 |
| ITF Women Incheon Qual | 2018/05/13 01:00 | You-Na Sul v Yu Jin Ahn | 4-6,3-6 |
| ITF Women Goyang Qual | 2018/05/07 01:30 | Akiko Omae v You-Na Sul | 6-4,6-3 |
| ITF Women Yeongwol | 2017/09/07 03:40 | Seung-Yeon Hong v You-Na Sul | 6-1,6-4 |
| ITF Women Yeongwol | 2017/09/06 01:00 | Dami Lee v You-Na Sul | 3-6,2-6 |
| ITF Women Yeongwol | 2017/09/05 01:00 | You-Na Sul v Subin Park | 7-6,7-6 |
| ITF Women Yeongwol | 2017/08/29 02:00 | You-Na Sul v Ching-Wen Hsu | 4-6,4-6 |
| ITF Women Gimcheon | 2017/06/14 02:50 | You-Na Sul v Mizuno Kijima | 5-7,6-7 |
| ITF Women Gimcheon | 2017/06/12 02:00 | You-Na Sul v Dabin Oh | 2-6,6-3,7-5 |