| UTR Pro Takasaki Women | 2023/09/04 03:30 | Aya Ishii v Yamaguchi, Ai | 6-3,3-6,6-4 |
| ITF W15 Sapporo | 2023/08/09 01:00 | Seri Nayuki v Yamaguchi, Ai | 4-6,6-4,7-5 |
| ITF W15 Sapporo | 2023/07/31 06:00 | Yamaguchi, Ai v Nishio, Momoko | 2-6,3-6 |
| ITF - W15 Nakhon Si Thammarat | 2023/07/20 02:00 | Honoka Kobayashi v Yamaguchi, Ai | 6-4,6-2 |
| ITF - W15 Nakhon Si Thammarat | 2023/07/19 02:00 | Alicia Smith v Yamaguchi, Ai | 4-6,4-6 |
| ITF - W15 Nakhon Si Thammarat | 2023/07/17 02:30 | Yamaguchi, Ai v Laquisa Khan | 6-1,6-4 |
| ITF - W15 Nakhon Si Thammarat | 2023/07/16 03:15 | Yamaguchi, Ai v Natcharee Teerachodjiranon | 6-1,6-1 |
| ITF - W15 Nakhon Si Thammarat | 2023/07/09 08:30 | Kuearum, Supapitch v Yamaguchi, Ai | 7-5,6-2 |
| UTR Pro Noda Women | 2023/08/27 04:45 | Noelani Teso v Kosaka Asahi | 6-3,6-1 |
| UTR Pro Noda Women | 2023/08/25 01:30 | Kosaka Asahi v Hinata Chiba | 6-4,5-7,2-6 |
| UTR Pro Noda Women | 2023/08/22 00:30 | Uta Asakura v Kosaka Asahi | 6-1,5-1 |