Stadium: Court 1 Round: 54 Ground: Hardcourt indoor
| ITF W25 Lisbon | 2021/09/26 15:00 | Ganna Poznikhirenko v Fiona Ganz | 6-2,6-2 |
| ITF W25 Santarem | 2021/09/22 14:50 | Fiona Ganz v Alice Robbe | 3-6,4-6 |
| ITF W25 Santarem | 2021/09/21 09:45 | Risa Ushijima v Fiona Ganz | 4-6,0-6 |
| ITF W25 Santarem | 2021/09/20 11:00 | Ana Filipa Santos v Fiona Ganz | 3-6,2-6 |
| ITF W60 Montreux | 2021/09/08 14:30 | Chloe Paquet v Fiona Ganz | 6-2,2-6,6-0 |
| ITF W60 Montreux | 2021/09/07 11:30 | Eden Silva v Fiona Ganz | 5-7,5-7 |
| ITF W60 Montreux | 2021/09/06 07:00 | Doroteja Joksovic v Fiona Ganz | 3-6,2-6 |
| ITF W60 Collonge-Bellerive | 2021/08/30 08:00 | Nagi Hanatani v Fiona Ganz | 6-2,5-7,11-9 |
| ITF W25 Cherbourg | 2021/10/03 10:15 | Mariana Galvao Borges v Karen Marthiens | 0-6,1-6 |
| ITF W15 Dijon | 2021/09/14 11:00 | Karen Marthiens v Anna Klasen | 1-6,1-6 |
| ITF W15 Amarante | 2021/07/20 16:00 | Karen Marthiens v Ayla Aksu | 2-6,3-6 |
| ITF W60 Vitoria-Gasteiz | 2021/07/12 10:00 | Laetitia Pulchartova v Karen Marthiens | 7-5,6-4 |
| ITF W60 Vitoria-Gasteiz | 2021/07/11 09:20 | Lilly Elida Haseth v Karen Marthiens | 4-6,6-4,7-10 |
| ITF W25 Perigueux | 2021/06/22 08:00 | Karen Marthiens v Guiomar Maristany Zuleta De Reales | 3-6,0-6 |
| ITF W25 Madrid | 2021/06/13 12:00 | Andrea Burguete Beltran v Karen Marthiens | 6-0,4-6,10-7 |
| ITF W15 Heraklion | 2021/06/01 06:30 | Karen Marthiens v Antonia Schmidt | 1-6,3-6 |