Stadium: Court 2 Round: 54 Ground: Hardcourt outdoor
| ITF W60 Kyoto | 2020/02/19 02:15 | Ari Matsumoto v Mei Yamaguchi | 5-7,2-6 |
| ITF W25 Yokohama | 2020/03/03 01:00 | Mei Yamaguchi v Yuka Hosoki | 6-1,6-2 |
| ITF W60 Kyoto | 2020/02/20 04:15 | Mei Yamaguchi v Risa Ushijima | 6-2,6-7,2-6 |
| ITF W60 Kyoto | 2020/02/19 02:15 | Ari Matsumoto v Mei Yamaguchi | 5-7,2-6 |
| ITF W25 Nonthaburi | 2020/01/26 07:00 | Mei Yamaguchi v Marianna Zakarlyuk | 7-5,5-7,7-10 |
| ITF W25 Hongkong | 2020/01/09 04:25 | Mei Yamaguchi v Jana Fett | 1-6,0-6 |
| ITF W25 Hongkong | 2020/01/08 06:00 | Mei Yamaguchi v Siqi Cao | 6-3,2-6,6-1 |
| ITF W25 Hongkong | 2020/01/07 03:50 | Emily Fanning v Mei Yamaguchi | 0-6,4-6 |
| ITF W25 Hongkong | 2020/01/06 02:00 | Mio Kozaki v Mei Yamaguchi | 3-6,1-6 |
| ITF W25 Yokohama | 2020/03/03 01:00 | Naoko Eto v Ari Matsumoto | 1-6,2-6 |
| ITF W60 Kyoto | 2020/02/19 02:15 | Ari Matsumoto v Mei Yamaguchi | 5-7,2-6 |
| ITF W60 Kyoto | 2020/02/17 08:15 | Funa Kozaki v Ari Matsumoto | 7-5,4-6,6-10 |
| ITF W60 Kyoto | 2020/02/17 05:00 | Robu Kajitani v Ari Matsumoto | 4-6,2-6 |
| ITF W25 Nonthaburi | 2020/02/02 06:05 | Ari Matsumoto v Eri Shimizu | 3-6,3-6 |
| ITF W25 Nonthaburi | 2020/01/26 10:50 | Maelys Bougrat v Ari Matsumoto | 2-6,7-6,10-2 |
| ITF W15 Nonthaburi | 2019/12/03 04:20 | Ari Matsumoto v Jiangxue Han | 1-6,3-6 |
| ITF W15 Nonthaburi | 2019/12/02 03:40 | Ari Matsumoto v Fitriana Sabrina | 6-0,6-2 |