Stadium: Pista BMW Round: 54 Ground: Hardcourt outdoor
| ITF W25 Getxo | 2022/07/04 09:00 | Jenny Duerst v Marthiens, Karen | 6-3,6-0 |
| ITF W25 Roehampton | 2022/07/13 09:00 | Lesley Pattinama Kerkhove v Jenny Duerst | 4-6,7-5,6-3 |
| ITF W25 Roehampton | 2022/07/12 08:30 | Jenny Duerst v Anika Jaskova | 6-3,6-3 |
| ITF W25 Getxo | 2022/07/08 10:00 | Jenny Duerst v Sapfo Sakellaridi | 4-6,7-5,1-6 |
| ITF W25 Getxo | 2022/07/07 11:05 | Leyre Romero Gormaz v Jenny Duerst | 4-6,4-6 |
| ITF W25 Getxo | 2022/07/05 10:55 | Noelia Zeballos v Jenny Duerst | 4-6,7-6,1-6 |
| ITF W25 Getxo | 2022/07/04 09:00 | Jenny Duerst v Marthiens, Karen | 6-3,6-0 |
| ITF W25 Klosters | 2022/06/24 07:00 | Nina Potocnik v Jenny Duerst | 3-6,6-2,6-2 |
| ITF W25 Klosters | 2022/06/23 08:40 | Karolina Kozakova v Jenny Duerst | 2-6,2-6 |
| ITF W25 Getxo | 2022/07/04 09:00 | Jenny Duerst v Marthiens, Karen | 6-3,6-0 |
| ITF W25 Perigueux | 2022/06/20 07:30 | Julie Myatovic v Marthiens, Karen | 4-6,6-4,11-9 |
| ITF W60 Biarritz | 2022/06/06 09:35 | Leire De Ezcurra v Marthiens, Karen | 6-3,6-3 |
| ITF - W15 Héraklion | 2022/05/31 08:30 | Marthiens, Karen v Irina Balus | 2-6,2-6 |
| ITF - W15 Héraklion | 2022/05/24 07:00 | Marthiens, Karen v Francesca Dell'edera | 2-6,2-6 |
| ITF - W15 Héraklion | 2022/05/23 07:00 | Marthiens, Karen v Choo, Deanne | 6-7,6-1,10-6 |
| ITF - W15 Héraklion | 2022/05/18 07:00 | Elena Korokozidi v Marthiens, Karen | 6-1,6-1 |
| ITF - W15 Héraklion | 2022/05/17 09:00 | Marthiens, Karen v Bianca E Barbulescu | 4-6,3-6 |