Stadium: Court 4 Round: 45 Ground: Hardcourt outdoor
| ITF Women Solo | 2018/07/12 03:00 | Mana Ayukawa v Okuno, Ayaka | 6-0,4-6,6-3 |
| ITF Women Anning Qual | 2017/04/24 02:00 | Mana Ayukawa v Okuno, Ayaka | 2-6,6-3,7-5 |
| Yokohama, Singles W-WITF-JPN-01B | 2017/03/08 01:00 | Okuno, Ayaka v Mana Ayukawa | 6-2,6-1 |
| Kashiwa, Qualifications Simples W-ITF-JPN-07A | 2019/04/01 03:00 | Okuno, Ayaka v Nagato, Momoko | 6-4,6-3 |
| ITF - W15 Antalya | 2019/02/15 06:30 | Lukacs, Vanda v Okuno, Ayaka | 7-5,6-3 |
| ITF - W15 Antalya | 2019/02/12 09:00 | Tuayeva, Alana v Okuno, Ayaka | 0-6,2-6 |
| ITF - W15 Antalya | 2019/02/05 10:05 | Okuno, Ayaka v Carole Monnet | 2-6,2-6 |
| ITF - W15 Antalya | 2019/02/01 07:00 | Okuno, Ayaka v Vlada Ekshibarova | 3-6,6-4,6-10 |
| ITF - W15 Antalya | 2019/01/18 07:00 | Okuno, Ayaka v Naho Sato | 1-6,6-4,1-6 |
| ITF - W15 Antalya | 2019/01/17 07:00 | Okuno, Ayaka v Stephanie Judith Visscher | 6-4,5-7,6-0 |
| Hua Hin, Singles W-WITF-THA-07A | 2018/12/03 03:45 | Runglerdkriangkrai, Apichaya v Okuno, Ayaka | 6-4,6-7,6-4 |
| Kashiwa, Qualifications Simples W-ITF-JPN-07A | 2019/04/01 03:00 | Naho Sato v Mana Ayukawa | 6-4,4-6,7-10 |
| Shenzhen, Simples W-ITF-CHN-04A | 2019/03/12 02:00 | Xiaodi You v Mana Ayukawa | 6-3,6-2 |
| Shenzhen, Simples W-ITF-CHN-04A | 2019/03/11 05:00 | Dabin Kim v Mana Ayukawa | 4-6,0-6 |
| ITF W25 Yokohama | 2019/03/04 03:25 | Catherine Harrison v Mana Ayukawa | 6-2,7-6 |
| Osaka, Singles W-ITF-JPN-02A | 2019/02/26 02:40 | Mana Ayukawa v Inoue, Miyabi | 6-4,5-7,7-10 |
| Osaka, Singles W-ITF-JPN-02A | 2019/02/25 03:00 | Hozumi, Eri v Mana Ayukawa | 7-5,3-6,8-10 |
| ITF W60 Kyoto | 2019/02/19 01:00 | Mana Ayukawa v Zhang, Ling | 6-2,4-6,6-10 |
| ITF W60 Kyoto | 2019/02/18 01:00 | Ulrikke Eikeri v Mana Ayukawa | 3-6,3-6 |