Stadium: Court 2 Round: 62
| ITF Women Kofu Qual | 2018/03/24 00:30 | Ksenia Lykina v Chihiro Takayama | 7-6,6-3 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | So-Ra Lee v Chihiro Takayama | 6-3,7-5 |
| ITF Women Nishi-Tama | 2018/03/18 01:00 | Utaka Kishigami v Chihiro Takayama | 2-6,4-6 |
| ITF Women Nishi-Tama | 2018/03/17 01:00 | Suzuka Furukawa v Chihiro Takayama | 4-6,2-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Chihiro Takayama v Misa Eguchi | 1-6,4-6 |
| ITF Women Antalya | 2018/01/29 08:00 | Rebecca Marino v Chihiro Takayama | 6-3,6-0 |
| ITF Women Antalya | 2018/01/28 07:30 | Maria Solnyshkina v Chihiro Takayama | 6-7,1-6 |
| ITF Women Antalya | 2018/01/27 06:30 | Ayano Sonoda v Chihiro Takayama | 0-6,0-6 |
| ITF Women Kashiwa Qual | 2018/04/01 02:00 | Miyabi Inoue v Ayumi Miyamoto | 6-4,7-5 |
| ITF Women Kofu Qual | 2018/03/24 03:00 | Ayumi Miyamoto v Rika Fujiwara | 7-6,0-6,2-6 |
| ITF Women Nishi-Tama | 2018/03/21 02:00 | Ayumi Miyamoto v Risa Ushijima | 6-1,4-6,4-6 |
| ITF Women Nishi-Tama | 2018/03/19 01:00 | Ayumi Miyamoto v Chie Kezuka | 6-1,6-0 |
| ITF Women Toyota Qual | 2018/03/11 01:00 | Miyabi Inoue v Ayumi Miyamoto | 6-0,6-1 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Ayumi Miyamoto v Mio Kozaki | 6-2,6-3 |
| ITF Women Yokohama Qual | 2018/03/04 05:30 | Ayumi Miyamoto v Julia Lohoff | 1-6,2-6 |
| ITF Women Toyota Qual | 2017/11/12 10:10 | Ayumi Miyamoto v Nicha Lertpitaksinchai | 2-6,6-4,2-6 |