Stadium: Center Court Round: 62 Ground: Hardcourt outdoor
| ITF W25 Incheon | 2023/05/15 02:40 | Ayumi Koshiishi v Qianhui Tang | 5-7,6-3,10-4 |
| Osaka, Singles W-ITF-JPN-02A | 2023/04/09 03:00 | Kurea Hayasaka v Ayumi Koshiishi | 6-7,4-6 |
| Kashiwa, Qualifications Simples W-ITF-JPN-07A | 2023/04/03 01:00 | Katarina Kozarov v Ayumi Koshiishi | 6-0,6-3 |
| Kofu, Qualifications Simples W-ITF-JPN-05A | 2023/03/29 04:20 | Ayumi Koshiishi v Hozumi, Eri | 4-6,2-6 |
| ITF - W15 Hinode | 2023/03/26 00:30 | Natsumi Kawaguchi v Ayumi Koshiishi | 6-1,6-2 |
| ITF - W15 Hinode | 2023/03/24 00:00 | Yuka Hosoki v Ayumi Koshiishi | 7-5,2-6,0-6 |
| ITF - W15 Hinode | 2023/03/23 02:35 | Hosonuma, Chisa v Ayumi Koshiishi | 2-6,1-6 |
| ITF - W15 Hinode | 2023/03/22 01:00 | Nishio, Momoko v Ayumi Koshiishi | 4-6,6-7 |
| ITF W25 Incheon | 2023/05/15 03:05 | Jeong Moon v Ahn, Yu Jin | 2-6,6-3,10-12 |
| ITF W25 Incheon | 2023/05/14 05:45 | Kanako Osafune v Ahn, Yu Jin | 1-6,0-6 |
| Jakarta, Singles Qualifying W-ITF-INA-01A | 2023/03/27 03:00 | Lucija Ciric Bagaric v Ahn, Yu Jin | 6-2,6-4 |
| Jakarta, Singles Qualifying W-ITF-INA-01A | 2023/03/20 04:35 | Ahn, Yu Jin v Emily Welker | 4-6,3-6 |
| Jakarta, Singles Qualifying W-ITF-INA-01A | 2023/03/19 04:00 | Ahn, Yu Jin v Kundali Majgaine | 1-6,6-2,10-2 |
| Jakarta, Singles W-ITF-INA-02A | 2023/03/17 02:00 | Yi Tsen Cho v Ahn, Yu Jin | 5-7,6-3,6-3 |
| Jakarta, Singles W-ITF-INA-02A | 2023/03/16 02:00 | Ahn, Yu Jin v Ikumi Yamazaki | 7-5,6-2 |
| Jakarta, Singles W-ITF-INA-02A | 2023/03/14 06:05 | Ahn, Yu Jin v Zlochova, Zuzana | 6-3,3-6,6-4 |