Stadium: Court 10 Round: 54 Ground: Grass
| ITF W25 - Karuizawa | 2019/05/20 03:00 | Ari Matsumoto v Momoko Nagato | 7-5,6-1 |
| ITF W60 - Kurume | 2019/05/13 00:30 | Mana Ayukawa v Ari Matsumoto | 6-2,6-2 |
| ITF W25 - Osaka | 2019/04/09 04:05 | Ari Matsumoto v Pranjala Yadlapalli | 6-3,5-7,0-6 |
| ITF W25 - Osaka | 2019/04/08 04:35 | So-Ra Lee v Ari Matsumoto | 6-2,5-7,7-10 |
| ITF W25 - Kofu | 2019/03/27 01:00 | Ari Matsumoto v Sandra Samir | 2-6,1-6 |
| ITF W25 - Kofu | 2019/03/19 01:00 | Ayano Shimizu v Ari Matsumoto | 6-3,6-1 |
| ITF W15 - Antalya | 2019/02/21 08:50 | Jessica Ho v Ari Matsumoto | 6-4,6-2 |
| ITF W15 - Antalya | 2019/02/19 07:00 | Ari Matsumoto v Oana S Corneanu | 6-0,7-6 |
| ITF W25 - Karuizawa | 2019/05/20 03:00 | Shiho Hisamatsu v Ayaka Okuno | 4-6,2-6 |
| ITF W60 - Kurume | 2019/05/13 01:55 | Alexandra Bozovic v Ayaka Okuno | 6-3,6-3 |
| ITF W60 - Fukuoka | 2019/05/06 03:05 | Ayaka Okuno v Leonie Kung | 3-6,3-6 |
| ITF W80 Charlottesville | 2019/04/23 16:20 | Emily Fanning v Ayaka Okuno | 4-6,6-2,10-3 |
| ITF W80 Charlottesville | 2019/04/22 14:00 | Ana J C Roeper v Ayaka Okuno | 0-6,2-6 |
| ITF W25 - Osaka | 2019/04/08 01:00 | Ayaka Okuno v Ramu Ueda | 3-6,2-6 |
| ITF W25 - Kashiwa | 2019/04/02 00:00 | Ayaka Okuno v Mana Ayukawa | 2-6,4-6 |
| ITF W25 - Kashiwa | 2019/04/01 03:00 | Ayaka Okuno v Momoko Nagato | 6-4,6-3 |