| 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 |
| ITF Women Nishi-Tama | 2018/03/20 02:40 | Erina Hayashi v Ayaka Okuno | 0-6,7-6,3-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Ayaka Okuno v Kyoka Okamura | 1-6,3-6 |
| ITF Women Yokohama Qual | 2018/03/04 07:00 | Ayaka Okuno v Ya-Hsuan Lee | 4-6,4-6 |
| ITF Women Surprise Qual | 2018/02/11 17:00 | Giuliana Olmos v Ayaka Okuno | 6-2,1-6,6-2 |
| ITF Women Kofu | 2018/03/29 01:00 | Luksika Kumkhum v Shiho Akita | 6-3,6-1 |
| ITF Women Kofu | 2018/03/28 03:20 | Shiho Akita v Ksenia Lykina | 7-6,4-6,6-3 |
| ITF Women Kofu Qual | 2018/03/26 01:00 | Mami Hasegawa v Shiho Akita | 2-6,0-6 |
| ITF Women Kofu Qual | 2018/03/25 02:30 | Yui Chikaraishi v Shiho Akita | 1-6,1-6 |
| ITF Women Kofu Qual | 2018/03/24 03:00 | Reina Takahashi v Shiho Akita | 4-6,1-6 |
| ITF Women Toyota | 2018/03/14 04:00 | Shiho Akita v Harriet Dart | 4-6,2-6 |
| ITF Women Toyota Qual | 2018/03/12 02:45 | Shiho Akita v Na Ri Kim | 6-3,6-2 |
| ITF Women Toyota Qual | 2018/03/11 03:30 | Shiho Akita v Mei Yamaguchi | 6-3,6-1 |