Stadium: Court 4 Round: 54 Ground: Hardcourt outdoor
| ITF W25 Yokohama | 2020/03/03 01:00 | Okuno, Ayaka v Uberoi, Nikita | 6-0,6-3 |
| ITF W60 Kyoto | 2020/02/17 06:15 | Kang, Jia-Qi v Okuno, Ayaka | 5-7,6-2,10-5 |
| ITF W60 Kyoto | 2020/02/17 01:30 | Shigeta, Mua v Okuno, Ayaka | 2-6,3-6 |
| ITF - W15 Antalya | 2020/02/06 07:00 | Okuno, Ayaka v Andreea Amalia Rosca | 2-6,0-6 |
| ITF - W15 Antalya | 2020/02/04 07:00 | Okuno, Ayaka v Han, Jiangxue | 3-6,6-2,6-4 |
| ITF - W15 Antalya | 2020/01/31 07:00 | Okuno, Ayaka v Andreea Amalia Rosca | 2-6,5-7 |
| ITF - W15 Antalya | 2020/01/30 07:00 | Yexin Ma v Okuno, Ayaka | 2-6,4-6 |
| ITF - W15 Antalya | 2020/01/29 06:00 | Han, Jiangxue v Okuno, Ayaka | 4-6,1-6 |
| ITF W25 Yokohama | 2020/03/03 01:00 | Sueno, Satoko v Yukina Saigo | 3-6,2-6 |
| ITF W60 Kyoto | 2020/02/17 00:00 | Yukina Saigo v Kisa Yoshioka | 6-7,4-6 |
| Nonthaburi, Singles W-ITF-THA-01A | 2020/02/02 04:30 | Rina Saigo v Yukina Saigo | 6-2,6-2 |
| Nonthaburi, Singles W-ITF-THA-01A | 2020/01/26 09:20 | Erika Sema v Yukina Saigo | 6-0,6-2 |
| ITF - W100 Tokyo | 2019/11/11 03:25 | Yukina Saigo v Naho Sato | 1-6,5-7 |
| ITF - W15 Antalya | 2019/10/10 10:05 | Claudia Giovine v Yukina Saigo | 6-4,4-6,6-3 |
| ITF - W15 Antalya | 2019/10/09 07:00 | Anna Gabric v Yukina Saigo | 4-6,6-4,1-6 |
| ITF - W15 Antalya | 2019/10/03 07:00 | Maria Timofeeva v Yukina Saigo | 6-1,6-4 |