| ITF Women Daegu | 06/20 05:45 | 25 | Kotomi Takahata v Satsuki Koike | 6-4,7-5 | |
| ITF Women Daegu Qual | 06/19 01:00 | 44 | Kotomi Takahata v Сеунг-Йон Хонг | 6-4,3-6,6-3 | |
| ITF Women Daegu Qual | 06/18 03:30 | 44 | Kotomi Takahata v Yu Jin Ahn | 6-1,6-4 | |
| ITF Women Kofu | 06/14 03:50 | 26 | [328] Мисаки Дой v Kotomi Takahata [216] | 6-3,6-2 | |
| ITF Women Kofu | 06/12 01:00 | 25 | Kotomi Takahata v Анастасия Березов | 6-3,7-5 | |
| ITF Women Changsha | 06/05 06:00 | 25 | [132] Лин Жу v Kotomi Takahata [226] | 6-0,6-0 | |
| ITF Women Changsha Qual | 06/03 04:15 | 44 | Kotomi Takahata v Yue Yu | 6-2,6-4 | |
| ITF Women Changsha Qual | 06/02 04:55 | 44 | Kotomi Takahata v DengLin Li | 6-1,6-3 | |
| ITF Women Karuizawa | 05/24 05:15 | 26 | [227] Kotomi Takahata v Ася Мохамед [244] | 4-6,2-6 | |
| ITF Women Karuizawa | 05/22 02:20 | 25 | Юка Хосоки v Kotomi Takahata | 4-6,3-6 | |
| ITF Women Kurume Qual | 05/14 03:10 | 54 | [398] Yuki Kristina Chiang v Kotomi Takahata [220] | 6-4,4-6,7-6 | |
| ITF Women Kurume Qual | 05/13 09:50 | 54 | Мей Ямагучи v Kotomi Takahata | 6-3,3-6,4-6 | |
| ITF Women Gifu Qual | 04/29 01:00 | 54 | [264] Емили Уебли-Смит v Kotomi Takahata [185] | 6-3,6-2 | |
| ITF Women Quanzhou Qual | 04/21 07:45 | 54 | [482] Вушуанг Женг v Kotomi Takahata [176] | 6-1,6-1 | |
| ITF Women Osaka Qual | 04/07 01:30 | 62 | Сузухо Ошино v Kotomi Takahata | Retired | |
| ITF Women Kofu Qual | 03/25 02:30 | 62 | Mami Hasegawa v Kotomi Takahata | 6-2,7-6 | |
| ITF Women Kofu Qual | 03/24 04:00 | 62 | Chie Kezuka v Kotomi Takahata | 4-6,5-7 | |
| ITF Women Nishi-Tama | 03/19 01:00 | 62 | Kotomi Takahata v Мичиру Фуруя | 7-6,5-7,4-6 | |
| ITF Women Nishi-Tama | 03/18 01:00 | 62 | Kotomi Takahata v Kiko Nishizato | 6-3,6-3 | |
| ITF Women Nishi-Tama | 03/17 04:00 | 62 | Kotomi Takahata v Sae Haraguchi | 6-1,6-1 | |
| ITF Women Burnie Qual | 01/27 23:00 | 54 | Jia Qi Ren v Kotomi Takahata | 6-7,6-3,6-1 | |
| ITF Women Toyota Qual | 11/12 01:40 | 54 | Мегуми Нишимото v Kotomi Takahata | 6-3,2-6,6-3 | |
| ITF Women Makinohara | 10/11 00:30 | 25 | Kotomi Takahata v Naomi Cheong | 0-6,1-6 | |
| WTA Dalian Qual | 09/03 06:10 | 45 | [261] Хироко Кувата v Kotomi Takahata [120] | 6-2,6-0 | |
| ITF Women Dunakeszi Qual | 08/26 10:20 | 54 | [120] Kotomi Takahata v Сабрина Сантамария [469] | 3-6,2-6 | |
| ITF Women Artvin Qual | 08/20 07:00 | 54 | [435] Гозал Айнитдинова v Kotomi Takahata [119] | 7-6,6-1 | |
| ITF Women Artvin Qual | 08/19 08:00 | 54 | Mirabelle Njoze v Kotomi Takahata | 1-6,1-6 | |
| ITF Women Anning | 07/04 01:30 | 25 | Kotomi Takahata v Жейинг Хе | 6-7,0-6 | |
| ITF Women Anning | 06/28 03:00 | 26 | Yixuan Li v Kotomi Takahata | 6-4,6-3 | |
| ITF Women Anning | 06/27 02:00 | 25 | [132] Kotomi Takahata v Ксиаоди Йоу [443] | 6-2,1-6,6-1 |