Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Hua Hin | 2019/10/08 04:20 | Haine Ogata v Ai Yamaguchi | 3-6,6-7 |
| ITF W15 Hua Hin | 2019/10/07 05:20 | Kanyanut Sudsaard v Ai Yamaguchi | 0-6,0-6 |
| ITF W15 Anning Qual | 2019/09/22 05:20 | Soha Sadiq v Ai Yamaguchi | 6-4,6-4 |
| ITF W15 Jakarta | 2019/06/26 05:00 | Ai Yamaguchi v Aldila Sutjiadi | 4-6,0-6 |
| ITF W15 Jakarta | 2019/06/25 05:15 | Ai Yamaguchi v Sara Jamal | 6-0,6-1 |
| ITF W60 Kurume | 2019/05/13 00:30 | Ai Yamaguchi v Yuuki Tanaka | 2-6,0-6 |
| ITF Women Iizuka Qual | 2016/09/25 04:00 | Chihiro Nunome v Ai Yamaguchi | 6-0,6-2 |
| ITF W15 Hua Hin | 2019/10/08 03:00 | Ya-Hsin Lee v Lunda Kumhom | 6-4,6-3 |
| ITF W25 Taipei | 2019/08/01 04:40 | Risa Ushijima v Ya-Hsin Lee | 4-6,7-6,6-2 |
| ITF W25 Taipei | 2019/07/30 06:55 | Ya-Hsin Lee v Akiko Omae | 6-3,7-5 |
| ITF Women Navi Mumbai | 2018/12/16 04:30 | Jacqueline Cako v Ya-Hsin Lee | 6-4,6-3 |
| ITF Women Navi Mumbai | 2018/12/15 04:30 | Pareen Shivekar v Ya-Hsin Lee | 6-7,4-6 |
| ITF Women Pune | 2018/12/08 05:40 | Aleksandrina Naydenova v Ya-Hsin Lee | 6-1,6-2 |
| ITF Women Nonthaburi | 2018/11/14 02:00 | Aunchisa Chanta v Ya-Hsin Lee | 6-7,6-4,6-4 |
| ITF Women Nonthaburi | 2018/11/13 02:00 | Ya-Hsin Lee v Patcharin Cheapchandej | 6-7,7-6,6-4 |