Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| Osaka, Singles W-ITF-JPN-02A | 2023/04/09 01:00 | Mei Hasegawa v Yamaguchi, Ai | 5-7,3-6 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/27 00:30 | Naho Sato v Yamaguchi, Ai | 6-1,6-1 |
| ITF - W15 Hinode | 2023/03/22 01:00 | Yamaguchi, Ai v Hosonuma, Chisa | 4-6,6-3,1-6 |
| ITF W15 Kuching | 2023/03/01 07:45 | Yu-Yun Li v Yamaguchi, Ai | 6-3,6-4 |
| ITF - W15 Kuala Lumpur | 2023/02/20 05:30 | Yamaguchi, Ai v Li Hsin Lin | 0-6,3-6 |
| ITF - W15 Kuala Lumpur | 2023/02/20 01:00 | Yamaguchi, Ai v Yang, Ziyi | 6-1,6-3 |
| ITF W15 Ipoh | 2023/02/13 03:00 | Yamaguchi, Ai v Yufei Ren | 5-7,3-6 |
| ITF W25 Monastir | 2022/12/12 11:00 | Martina Spigarelli v Yamaguchi, Ai | 6-2,6-1 |
| Osaka, Singles W-ITF-JPN-02A | 2023/04/09 01:00 | Ayaka Ozeki v Sawayanagi, Riko | 0-6,0-6 |
| ITF W60 Canberra | 2023/03/21 03:00 | Sawayanagi, Riko v Dalila Jakupovic | 2-6,2-6 |
| ITF W60 Canberra | 2023/03/20 00:25 | Yang, Ya-Yi v Sawayanagi, Riko | 6-3,0-6,1-6 |
| ITF W60 Canberra Qual | 2023/03/18 23:00 | Fry, Sophia v Sawayanagi, Riko | 0-6,0-6 |
| ITF W60 Canberra | 2023/03/15 23:00 | Haruka Kaji v Sawayanagi, Riko | 6-2,4-6,6-2 |
| ITF W60 Canberra | 2023/03/13 23:00 | Sawayanagi, Riko v Irina Ramialison | 7-5,7-5 |
| ITF W60 Canberra | 2023/03/13 00:35 | Sawayanagi, Riko v Mana Kawamura | 3-6,7-5,6-4 |
| ITF W60 Canberra | 2023/03/12 03:15 | Sawayanagi, Riko v Berezov, Anastasia | 6-3,6-1 |