Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF W15 - Hua Hin | 2019/07/10 03:00 | Sowjanya Bavisetti v Ayaka Okuno | 6-4,6-4 |
| ITF W15 - Hua Hin | 2019/07/02 06:55 | Lou Brouleau v Ayaka Okuno | 6-1,6-0 |
| ITF W15 - Gimcheon | 2019/06/21 01:00 | Ayaka Okuno v So-Ra Lee | 5-7,6-2,3-6 |
| ITF W15 - Gimcheon | 2019/06/20 01:00 | Ayaka Okuno v Hwiwon Wi | 3-6,6-3,6-1 |
| ITF W15 - Gimcheon | 2019/06/18 05:25 | Daria Mishina v Ayaka Okuno | 2-6,3-6 |
| ITF W15 - Gimcheon | 2019/06/13 01:30 | Ayaka Okuno v Da Ye Kim | 4-6,7-5,4-6 |
| ITF W15 - Gimcheon | 2019/06/11 04:30 | Ayaka Okuno v BoYoung Jeong | 6-3,6-1 |
| ITF W25 - Daegu | 2019/06/03 01:00 | Hyojung Yea v Ayaka Okuno | 4-6,6-2,10-5 |