Stadium: Center Court Round: 27 Ground: Hardcourt outdoor
| ITF - Jakarta W15 | 2023/03/16 02:00 | Yu Jin Ahn v Ikumi Yamazaki | 7-5,6-2 |
| ITF - Incheon W25 | 2023/05/18 01:00 | Ya-Hsuan Lee v Ikumi Yamazaki | 3-6,6-7 |
| ITF - Incheon W25 | 2023/05/17 05:25 | Yugyeong Oh v Ikumi Yamazaki | 4-6,4-6 |
| ITF - Santa Margherita W25 | 2023/05/04 07:30 | Kathinka Von Deichmann v Ikumi Yamazaki | 6-1,6-3 |
| ITF - Santa Margherita W25 | 2023/05/02 12:45 | Jessica Pieri v Ikumi Yamazaki | 7-5,6-7,4-6 |
| ITF - Santa Margherita W25 | 2023/04/26 08:00 | Jennifer Ruggeri v Ikumi Yamazaki | 7-5,6-1 |
| ITF - Santa Margherita W25 | 2023/04/18 08:00 | Ikumi Yamazaki v Giorgia Pedone | 0-6,4-6 |
| ITF - Santa Margherita W25 | 2023/04/17 08:30 | Ikumi Yamazaki v Versace Gatti | 6-4,6-2 |
| ITF - Santa Margherita W25 | 2023/04/11 14:15 | Sofia Costoulas v Ikumi Yamazaki | 7-6,6-2 |
| ITF - Incheon W25 | 2023/05/18 06:00 | Yu Jin Ahn v Vaidehi Chaudhari | 7-6,6-2 |
| ITF - Incheon W25 | 2023/05/17 03:55 | Haram Kim v Yu Jin Ahn | 2-6,4-6 |
| ITF - Incheon W25 | 2023/05/15 06:40 | Ayumi Koshiishi v Yu Jin Ahn | 4-6,3-6 |
| ITF - Incheon W25 | 2023/05/15 03:05 | Jeong Moon v Yu Jin Ahn | 2-6,6-3,10-12 |
| ITF - Incheon W25 | 2023/05/14 05:45 | Kanako Osafune v Yu Jin Ahn | 1-6,0-6 |
| ITF - Jakarta W25 | 2023/03/27 03:00 | Lucija Ciric Bagaric v Yu Jin Ahn | 6-2,6-4 |
| ITF - Jakarta W25 | 2023/03/20 04:35 | Yu Jin Ahn v Emily Welker | 4-6,3-6 |
| ITF - Jakarta W25 | 2023/03/19 04:00 | Yu Jin Ahn v Kundali Majgaine | 1-6,6-2,10-2 |