Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| ITF W15 Manacor | 2021/01/19 09:00 | Valentina Ryser v Yeon Woo Ku | 3-6,6-3,10-4 |
| ITF W15 Dijon | 2021/09/18 08:30 | Alina Granwehr v Valentina Ryser | 4-6,6-2,6-2 |
| ITF W15 Dijon | 2021/09/17 08:30 | Amarissa K Toth v Valentina Ryser | 3-6,6-7 |
| ITF W15 Dijon | 2021/09/16 08:00 | Arina Gabriela Vasilescu v Valentina Ryser | 6-3,1-6,2-6 |
| ITF W15 Dijon | 2021/09/15 08:00 | Vivian Wolff v Valentina Ryser | 4-6,5-7 |
| ITF W15 Dijon | 2021/09/14 07:30 | Marine Szostak v Valentina Ryser | 4-6,7-5,3-6 |
| ITF W60 Montreux | 2021/09/08 10:35 | Conny Perrin v Valentina Ryser | 6-1,7-6 |
| ITF W60 Collonge-Bellerive | 2021/09/01 09:35 | Oceane Dodin v Valentina Ryser | 6-3,7-5 |
| ITF W25 Verbier | 2021/08/25 14:20 | Maria Timofeeva v Valentina Ryser | 4-6,6-3,6-3 |
| ITF W25 Lisbon | 2021/09/28 14:25 | Tatjana Maria v Yeon Woo Ku | 6-1,7-6 |
| ITF W25 Lisbon | 2021/09/27 09:00 | Yeon Woo Ku v Ines Murta | 6-4,6-1 |
| ITF W25 Lisbon | 2021/09/26 09:00 | Francisca Jorge v Yeon Woo Ku | 7-6,1-6,8-10 |
| ITF W15 Melilla | 2021/09/17 14:50 | Lucia L Domingo v Yeon Woo Ku | 7-6,2-6,6-3 |
| ITF W15 Melilla | 2021/09/17 10:40 | Claudia Martinez de Velasco v Yeon Woo Ku | 1-6,0-6 |
| ITF W15 Melilla | 2021/09/14 11:50 | Elena Jamshidi v Yeon Woo Ku | 2-6,0-6 |
| ITF W15 Aix-en-Provence | 2021/09/02 09:40 | Emeline Dartron v Yeon Woo Ku | 5-7,7-6,6-4 |
| ITF W15 Bad Waltersdorf | 2021/08/28 08:00 | Yeon Woo Ku v Antonia Ruzic | 0-6,3-6 |