| 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 Nishi-Tama | 2018/03/17 05:30 | Kanako Morisaki v Sakura Hondo | 6-2,6-1 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Sakura Hondo v Mitsumi Kawasaki | 1-6,4-6 |
| ITF Women Fukuoka Qual | 2018/05/06 07:05 | Akari Inoue v Ayaka Okuno | 6-1,6-4 |
| ITF Women Gifu Qual | 2018/04/29 03:10 | Mai Hontama v Ayaka Okuno | 5-7,7-6,6-2 |
| ITF Women Quanzhou Qual | 2018/04/21 05:45 | Ao Gai v Ayaka Okuno | 6-3,6-4 |
| ITF Women Kashiwa Qual | 2018/04/01 03:00 | Ayaka Okuno v Shiho Akita | 1-6,0-6 |
| ITF Women Kofu Qual | 2018/03/25 02:30 | Ayaka Okuno v Alina Silich | 1-6,1-6 |
| ITF Women Kofu Qual | 2018/03/24 04:00 | Charlotte Robillard-Millette v Ayaka Okuno | 1-6,1-6 |
| ITF Women Nishi-Tama | 2018/03/23 01:00 | Ayaka Okuno v So-Ra Lee | 3-6,4-6 |
| ITF Women Nishi-Tama | 2018/03/22 03:00 | Yuki Kristina Chiang v Ayaka Okuno | 6-1,5-7,1-6 |