Stadion: Court B Round: 26 Ground: Hardcourt indoor
| ITF Damen - Hamamatsu | 2018/10/18 03:30 | Risa Ushijima v Mei Yamaguchi | 1-6,1-6 |
| ITF Damen - Karuizawa | 2018/05/24 01:15 | Mei Yamaguchi v Risa Ushijima | 3-6,7-5,7-6 |
| ITF Damen - W60 - Kyoto | 2020/02/19 02:15 | Ari Matsumoto v Mei Yamaguchi | 5-7,2-6 |
| ITF Damen - W25 - Nonthaburi | 2020/01/26 07:00 | Mei Yamaguchi v Marianna Zakarlyuk | 7-5,5-7,7-10 |
| ITF Damen - W25 - Hongkong | 2020/01/09 04:25 | Mei Yamaguchi v Jana Fett | 1-6,0-6 |
| ITF Damen - W25 - Hongkong | 2020/01/08 06:00 | Mei Yamaguchi v Siqi Cao | 6-3,2-6,6-1 |
| ITF Damen - W25 - Hongkong | 2020/01/07 03:50 | Emily Fanning v Mei Yamaguchi | 0-6,4-6 |
| ITF Damen - W25 - Hongkong | 2020/01/06 02:00 | Mio Kozaki v Mei Yamaguchi | 3-6,1-6 |
| ITF Damen - W25 - Hongkong | 2020/01/02 02:00 | Lin Zhu v Mei Yamaguchi | 6-0,6-2 |
| ITF Damen - W25 - Hongkong | 2020/01/01 04:55 | Mei Yamaguchi v Lucie Hradecka | 6-3,3-6,7-5 |
| ITF Damen - W60 - Kyoto | 2020/02/19 06:00 | Risa Ushijima v Arina Rodionova | 6-4,1-6,7-6 |
| ITF Damen - W25 - Launceston | 2020/02/03 22:55 | Alexandra Bozovic v Risa Ushijima | 6-1,4-6,6-4 |
| ITF Damen - W60 - Burnie | 2020/01/27 23:00 | Risa Ushijima v Himari Sato | 0-6,2-6 |
| ITF Damen - W25 - Vero Beach | 2020/01/20 16:00 | Eleana Yu v Risa Ushijima | 7-5,6-0 |
| ITF Damen - W25 - Daytona Beach | 2020/01/12 16:00 | Maria Lourdes Carle v Risa Ushijima | 6-4,6-1 |
| ITF Damen - W25 - Navi Mumbai | 2019/12/17 09:30 | Risa Ushijima v Nudnida Luangnam | 7-5,3-6,2-6 |
| ITF Damen - W25 - Pune | 2019/12/12 05:30 | Risa Ushijima v Shalimar Talbi | 6-7,5-7 |
| ITF Damen - W25 - Pune | 2019/12/10 05:00 | Ekaterina Yashina v Risa Ushijima | 4-6,5-7 |