Stadium: Clay 9 Round: 62 Ground: Clay
| ITF W60 Ricany | 2023/06/13 08:00 | Miriana Tona v Sina Herrmann | 6-4,6-3 |
| ITF W60 Ricany | 2023/06/12 08:00 | Sina Herrmann v Polina Leykina | 4-6,6-4,6-3 |
| ITF W60 Ricany | 2023/06/11 08:00 | Sina Herrmann v Klara Kajabova | 6-2,6-1 |
| ITF W25 Poertschach | 2023/06/07 09:20 | Sina Herrmann v Ekaterina Vl. Makarova | 3-6,2-6 |
| ITF W25 Poertschach | 2023/06/06 14:00 | Lilli Tagger v Sina Herrmann | 3-6,4-6 |
| ITF W25 Annenheim | 2023/05/30 13:35 | Sina Herrmann v Miriam Bulgaru | 2-6,6-7 |
| ITF W60 Bellinzona | 2023/04/17 08:00 | Sina Herrmann v Federica Di Sarra | 6-3,5-7,2-6 |
| ITF W60 Bellinzona | 2023/04/16 08:00 | Sina Herrmann v Carola Cavelli | 6-1,6-2 |
| ITF W25 Saint Palais Sur Mer | 2022/09/04 12:00 | Tea Zivic v Karen Marthiens | 7-5,1-6,10-7 |
| ITF W60 Vitoria-Gasteiz | 2022/07/17 07:00 | Jenny Duerst v Karen Marthiens | 6-0,6-2 |
| ITF W25 Getxo | 2022/07/04 09:00 | Jenny Duerst v Karen Marthiens | 6-3,6-0 |
| ITF W25 Perigueux | 2022/06/20 07:30 | Julie Myatovic v Karen Marthiens | 4-6,6-4,11-9 |
| ITF W60 Biarritz | 2022/06/06 09:35 | Leire De Ezcurra v Karen Marthiens | 6-3,6-3 |
| ITF W15 Heraklion | 2022/05/31 08:30 | Karen Marthiens v Irina Balus | 2-6,2-6 |
| ITF W15 Heraklion | 2022/05/24 07:00 | Karen Marthiens v Francesca Dell'edera | 2-6,2-6 |
| ITF W15 Heraklion | 2022/05/23 07:00 | Karen Marthiens v Deanne Choo | 6-7,6-1,10-6 |