Stadium: COURT A Round: 54 Ground: Synthetic outdoor
| ITF W25 Makinohara | 2019/10/07 03:30 | Matsumoto, Ari v Oshino, Suzuho | 6-2,6-1 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/23 01:00 | Matsumoto, Ari v Jovic, J. | 1-6,1-6 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/22 01:00 | Anri Nagata v Matsumoto, Ari | 1-6,1-6 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/21 05:40 | Matsumoto, Ari v Okuno, Ayaka | 4-6,6-2,10-7 |
| Karuizawa, Singles W-ITF-JPN-12A | 2019/05/20 03:00 | Matsumoto, Ari v Nagato, Momoko | 7-5,6-1 |
| Kurume, Singles W-ITF-JPN-11A | 2019/05/13 00:30 | Mana Ayukawa v Matsumoto, Ari | 6-2,6-2 |
| Osaka, Singles W-ITF-JPN-02A | 2019/04/09 04:05 | Matsumoto, Ari v Yadlapalli, Pranjala | 6-3,5-7,0-6 |
| Osaka, Singles W-ITF-JPN-02A | 2019/04/08 04:35 | Lee, So-Ra v Matsumoto, Ari | 6-2,5-7,7-10 |
| ITF W25 Nanao | 2019/08/29 02:00 | Mana Ayukawa v Takahata, Kotomi | 2-6,6-3,6-1 |
| ITF W25 Nanao | 2019/08/26 01:00 | Hondo, Sakura v Takahata, Kotomi | 6-4,2-6,7-10 |
| ITF W25 Nanao | 2019/08/25 03:00 | Hsieh, Yu-Ting v Takahata, Kotomi | 2-6,3-6 |
| Tsukuba, Singles W-ITF-JPN-13A | 2019/08/21 01:30 | Momoko Kobori v Takahata, Kotomi | 6-3,6-1 |
| Tsukuba, Singles W-ITF-JPN-13A | 2019/08/20 04:30 | Ganaha, Mako v Takahata, Kotomi | 6-1,1-6,7-10 |
| Tsukuba, Singles W-ITF-JPN-13A | 2019/08/19 02:35 | Takahata, Kotomi v Funa Kozaki | 6-1,6-2 |
| ITF W25 Goyang | 2019/05/21 01:00 | Tanaka, Yuuki v Takahata, Kotomi | 6-0,6-0 |
| ITF W25 Goyang | 2019/05/20 01:00 | Laguza, Anna v Takahata, Kotomi | 6-7,6-2,5-10 |