Stadium: COURT A Round: 54 Ground: Synthetic outdoor
| ITF W25 Makinohara | 2019/10/07 03:30 | Ari Matsumoto v Suzuho Oshino | 6-2,6-1 |
| ITF W25 Karuizawa | 2019/05/23 01:00 | Ari Matsumoto v Jovana Jaksic | 1-6,1-6 |
| ITF W25 Karuizawa | 2019/05/22 01:00 | Anri Nagata v Ari Matsumoto | 1-6,1-6 |
| ITF W25 Karuizawa | 2019/05/21 05:40 | Ari Matsumoto v Ayaka Okuno | 4-6,6-2,10-7 |
| 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 Nanao | 2019/08/29 02:00 | Mana Ayukawa v Kotomi Takahata | 2-6,6-3,6-1 |
| ITF W25 Nanao | 2019/08/26 01:00 | Sakura Hondo v Kotomi Takahata | 6-4,2-6,7-10 |
| ITF W25 Nanao | 2019/08/25 03:00 | Yu-Ting Hsieh v Kotomi Takahata | 2-6,3-6 |
| ITF W25 Tsukuba | 2019/08/21 01:30 | Momoko Kobori v Kotomi Takahata | 6-3,6-1 |
| ITF W25 Tsukuba | 2019/08/20 04:30 | Mako Ganaha v Kotomi Takahata | 6-1,1-6,7-10 |
| ITF W25 Tsukuba | 2019/08/19 02:35 | Kotomi Takahata v Funa Kozaki | 6-1,6-2 |
| ITF W25 Goyang | 2019/05/21 01:00 | Yuuki Tanaka v Kotomi Takahata | 6-0,6-0 |
| ITF W25 Goyang | 2019/05/20 01:00 | Anna Laguza v Kotomi Takahata | 6-7,6-2,5-10 |