Stadium: Court H Round: 62 Ground: Hardcourt outdoor
| ITF Women Burnie Qual | 2018/01/27 23:00 | Jia Qi Ren v Kotomi Takahata | 6-7,6-3,6-1 |
| ITF Women Toyota Qual | 2017/11/12 01:40 | Megumi Nishimoto v Kotomi Takahata | 6-3,2-6,6-3 |
| ITF Women Makinohara | 2017/10/11 00:30 | Kotomi Takahata v Naomi Cheong | 0-6,1-6 |
| WTA Dalian Qual | 2017/09/03 06:10 | Hiroko Kuwata v Kotomi Takahata | 6-2,6-0 |
| ITF Women Dunakeszi Qual | 2017/08/26 10:20 | Kotomi Takahata v Sabrina Santamaria | 3-6,2-6 |
| ITF Women Artvin Qual | 2017/08/20 07:00 | Gozal Ainitdinova v Kotomi Takahata | 7-6,6-1 |
| ITF Women Artvin Qual | 2017/08/19 08:00 | Mirabelle Njoze v Kotomi Takahata | 1-6,1-6 |
| ITF Women Anning | 2017/07/04 01:30 | Kotomi Takahata v Jiaying He | 6-7,0-6 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Sae Haraguchi v Mei Yamaguchi | 1-6,0-6 |
| ITF Women Hamamatsu Qual | 2017/10/14 01:00 | Ayaka Ozeki v Sae Haraguchi | 2-6,6-4,3-6 |
| ITF Women Kofu Qual | 2017/06/12 03:20 | Michaela Haet v Sae Haraguchi | 6-1,6-3 |
| ITF Women Kofu Qual | 2017/06/11 01:00 | Sae Haraguchi v Shiho Hisamatsu | 6-1,3-6,6-0 |
| ITF Women Kofu Qual | 2017/03/25 03:30 | Sae Haraguchi v Michika Ozeki | 1-6,4-6 |