Stadion: Court 5 Round: 25 Ground: Synthetic outdoor
| ITF Damen - Kofu | 2018/06/13 03:30 | Mana Ayukawa v Momoko Kobori | 4-6,4-6 |
| ITF Damen - Makinohara | 2018/10/13 03:05 | Mana Ayukawa v Junri Namigata | 1-6,6-3,2-6 |
| ITF Damen - Makinohara | 2018/10/12 03:00 | Mana Ayukawa v Susan Bandecchi | 6-4,3-6,6-3 |
| ITF Damen - Makinohara | 2018/10/11 00:30 | Mana Ayukawa v Ramu Ueda | 7-5,1-6,6-2 |
| ITF Damen - Makinohara | 2018/10/10 00:30 | Nagi Hanatani v Mana Ayukawa | 1-6,7-5,4-6 |
| ITF Damen - Darwin | 2018/09/24 00:30 | Mana Ayukawa v Kyoka Okamura | 4-6,6-3,3-6 |
| ITF Damen - Darwin | 2018/09/23 03:30 | Mana Ayukawa v Ramu Ueda | 4-6,6-1,6-2 |
| ITF Damen - Cairns | 2018/09/19 02:00 | Maddison Inglis v Mana Ayukawa | 7-6,7-5 |
| ITF Damen - Cairns | 2018/09/17 00:00 | Mana Ayukawa v Erin Routliffe | 6-4,6-3 |
| ITF Damen - Makinohara | 2018/10/14 02:00 | Momoko Kobori v Junri Namigata | 6-2,6-3 |
| ITF Damen - Makinohara | 2018/10/13 01:00 | Momoko Kobori v Ayumi Miyamoto | 6-0,4-6,6-3 |
| ITF Damen - Makinohara | 2018/10/12 01:00 | Momoko Kobori v Shiho Akita | 7-5,6-2 |
| ITF Damen - Makinohara | 2018/10/11 02:55 | Momoko Kobori v Mei Yamaguchi | 6-1,6-3 |
| ITF Damen - Makinohara | 2018/10/10 00:30 | Momoko Kobori v Sakura Hondo | 7-5,6-1 |
| WTA - Tokio | 2018/09/15 09:00 | Magda Linette v Momoko Kobori | 7-6,6-3 |
| WTA - Hiroshima | 2018/09/09 08:15 | Amanda Anisimova v Momoko Kobori | 6-3,6-3 |
| ITF Damen - Nanao | 2018/08/29 06:05 | Momoko Kobori v Risa Ushijima | 5-7,2-6 |