Stadium: Court 5 Round: 54
| ITF Women Kurume Qual | 2018/05/14 01:00 | Yukina Saigo v Sakura Hondo | 3-6,6-4,5-7 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Sakura Hondo v Ayaka Okuno | 6-7,6-4,7-6 |
| ITF Women Fukuoka Qual | 2018/05/08 01:00 | Mina Miyahara v Sakura Hondo | 6-2,3-6,7-5 |
| ITF Women Fukuoka Qual | 2018/05/07 01:00 | Robu Kajitani v Sakura Hondo | 6-2,3-6,4-6 |
| ITF Women Fukuoka Qual | 2018/05/06 01:00 | Sakura Hondo v Yuki Kristina Chiang | 6-2,6-3 |
| ITF Women Hua Hin | 2018/04/30 06:40 | Bunyawi Thamchaiwat v Sakura Hondo | 3-6,7-6,6-1 |
| ITF Women Osaka Qual | 2018/04/07 02:30 | Ya-Hsuan Lee v Sakura Hondo | 6-3,6-1 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Mayuka Aikawa v Sakura Hondo | 6-4,6-2 |
| ITF Women Kurume Qual | 2018/05/14 01:00 | Chisa Hosonuma v Michika Ozeki | 6-7,2-6 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Akari Inoue v Michika Ozeki | 2-6,6-1,4-6 |
| ITF Women Fukuoka Qual | 2018/05/06 02:40 | Olivia Tjandramulia v Michika Ozeki | 6-2,7-6 |
| WTA Anning Qual | 2018/04/28 06:30 | Xu Liu Sun v Michika Ozeki | 7-6,7-6 |
| ITF Women Quanzhou Qual | 2018/04/21 08:05 | Ying Zhang v Michika Ozeki | 3-6,6-3,6-1 |
| ITF Women Canberra | 2018/03/28 23:00 | Katy Dunne v Michika Ozeki | 6-3,6-0 |
| ITF Women Canberra | 2018/03/27 00:50 | Michika Ozeki v Ramona Mataruga | 6-4,6-1 |
| ITF Women Canberra Qual | 2018/03/25 01:30 | Michika Ozeki v Binasa Beslagic | 6-2,3-6,6-3 |