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