Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Monastir | 2021/07/17 08:25 | Eliessa Vanlangendonck v Ayumi Koshiishi | 6-1,4-6,6-2 |
| ITF W15 Monastir | 2021/07/16 08:30 | Ayumi Koshiishi v Chiraz Bechri | 6-2,6-4 |
| ITF W15 Monastir | 2021/07/15 10:45 | Anastasia E Nefedova v Ayumi Koshiishi | 6-3,6-7,3-6 |
| ITF W15 Monastir | 2021/07/14 10:15 | Paris Corley v Ayumi Koshiishi | 2-6,1-6 |
| ITF W15 Monastir | 2021/07/09 10:45 | Angelica Raggi v Ayumi Koshiishi | 6-3,6-2 |
| ITF W15 Monastir | 2021/07/08 10:30 | Chiraz Bechri v Ayumi Koshiishi | 3-6,2-6 |
| ITF W15 Monastir | 2021/07/06 08:00 | Ayumi Koshiishi v Emma Davis | 7-5,6-0 |
| ITF W15 Monastir | 2021/06/29 10:15 | Ayumi Koshiishi v Elizabeth Mandlik | 6-1,1-6,4-6 |
| ITF W15 Almada | 2021/07/17 11:10 | Georgia Drummy v Yeon Woo Ku | 7-5,6-2 |
| ITF W15 Almada | 2021/07/16 08:30 | Lucie Nguyen Tan v Yeon Woo Ku | 3-6,2-6 |
| ITF W15 Almada | 2021/07/15 08:30 | Laia Conde Monfort v Yeon Woo Ku | 0-6,2-6 |
| ITF W15 Almada | 2021/07/13 10:00 | Yeon Woo Ku v Himari Sato | 6-1,6-3 |
| ITF W15 Sharm El Sheikh | 2021/03/25 08:40 | Joanne Zuger v Yeon Woo Ku | 6-4,6-3 |
| ITF W15 Sharm El Sheikh | 2021/03/24 14:40 | Yeon Woo Ku v Elizabeth Mandlik | 6-4,6-2 |
| ITF W15 Sharm El Sheikh | 2021/03/23 07:00 | Shelly Bereznyak v Yeon Woo Ku | 4-6,4-6 |
| ITF W15 Sharm El Sheikh | 2021/03/22 08:00 | Izabela Gabriela Novac v Yeon Woo Ku | 0-6,1-6 |