Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF Women Santa Margherita | 2018/10/01 12:00 | Gabriela Ce v Yuuki Tanaka | 6-0,6-1 |
| ITF Women Santa Margherita | 2018/09/30 14:35 | Yuuki Tanaka v Tayisiya Morderger | 6-2,6-4 |
| ITF Women Santa Margherita | 2018/09/23 16:00 | Elena Malygina v Yuuki Tanaka | 6-1,6-4 |
| ITF Women Santa Margherita | 2018/09/18 12:00 | Chieh-Yu Hsu v Yuuki Tanaka | 6-3,6-2 |
| ITF Women Santa Margherita | 2018/09/17 13:25 | Carolina Alves v Yuuki Tanaka | 6-2,6-2 |
| ITF Women Santa Margherita | 2018/09/16 16:50 | Chloe Compson v Yuuki Tanaka | 0-6,0-6 |
| ITF Women Tsukuba | 2018/08/23 03:50 | Mana Ayukawa v Yuuki Tanaka | 6-1,6-3 |
| ITF Women Tsukuba | 2018/08/21 00:30 | Yuuki Tanaka v Miyabi Inoue | 6-3,6-1 |
| ITF Women Makinohara | 2018/10/08 03:25 | Kotomi Takahata v Suzuho Oshino | 4-6,2-6 |
| ITF Women Makinohara | 2018/10/07 03:00 | Kotomi Takahata v Robu Kajitani | 7-5,7-5 |
| ITF Women Nanao | 2018/08/29 05:20 | Kotomi Takahata v Haruka Kaji | 6-7,2-6 |
| ITF Women Nanao | 2018/08/27 01:00 | Kotomi Takahata v Minami Shuto | 7-6,6-3 |
| ITF Women Nanao | 2018/08/26 03:25 | Kotomi Takahata v Ayano Sonoda | 6-4,6-0 |
| ITF Women Tsukuba | 2018/08/19 03:00 | Kumi So v Kotomi Takahata | 6-4,6-4 |
| ITF Women Taipei | 2018/07/24 03:55 | Chin-Wei Chan v Kotomi Takahata | 4-6,6-3,6-3 |
| ITF Women Astana Qual | 2018/07/14 10:45 | Daria Kruzhkova v Kotomi Takahata | 6-2,6-1 |