Stadium: Clay 12 Round: 28 Ground: Clay
| ITF W15 Heraklion WD | 2020/03/05 13:00 | Colmegna/Spiteri v Klasen/Koelzer | 7-5,1-6,6-10 |
| ITF W15 Heraklion WD | 2020/03/03 14:00 | B Maneiro/Custic v Klasen/Koelzer | 6-2,4-6,3-10 |
| ITF W25 Braunschweig WD | 2019/08/23 15:00 | Klasen/Koelzer v Leykina/Partaud | 2-6,1-6 |
| ITF W25 Braunschweig WD | 2019/08/22 16:00 | Klasen/Koelzer v Alves/Appleton | 6-4,6-2 |
| ITF W25 Braunschweig WD | 2019/08/20 13:00 | Klasen/Koelzer v Lukacs/Ponomar | 6-7,6-3,10-3 |
| ITF W25 Leipzig WD | 2019/08/13 14:55 | Klasen/Koelzer v Lee/Stamatova | 1-6,6-4,4-10 |
| ITF W60 Hechingen WD | 2019/08/08 16:15 | Klasen/Koelzer v Bogdan/Paar | 2-6,5-7 |
| ITF W25 Santa Margherita WD | 2019/05/02 14:25 | Bains/Bondar v Klasen/Koelzer | 6-3,6-4 |
| ITF W15 Heraklion WD | 2020/03/05 13:00 | Gaspar/Masarova v Bergen/Duca | 6-2,6-3 |