Stadium: Court 21 Round: 62 Ground: Clay
| ITF W25 Yokohama | 2020/03/03 01:00 | Ai Yamaguchi v Honoka Kobayashi | 0-6,0-6 |
| ITF W15 Hua Hin | 2019/10/09 04:25 | Ai Yamaguchi v Ya-Hsin Lee | 0-6,1-6 |
| 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 |