Stadium: Court 4 Round: 27 Ground: Clay
| ITF Women Braunschweig WD | 2018/08/22 14:20 | Klasen A / Koelzer R v Brescia G / Shinikova I | 3-6,5-7 |
| ITF Women Leipzig WD | 2018/08/14 15:45 | Klasen A / Koelzer R v C Dinu / G Poznikhirenko | 6-7,3-6 |
| ITF Women Oeiras WD | 2018/05/26 14:20 | Carrillo Marin A / Cianci C v Klasen A / Koelzer R | 3-6,3-6 |
| ITF Women Oeiras WD | 2018/05/25 17:30 | Da Silva Fick G / Udvardy P v Klasen A / Koelzer R | 5-7,0-6 |
| ITF Women Oeiras WD | 2018/05/25 12:00 | Klasen A / Koelzer R v Cavalle-Reimers Y / Moreno Barranquero A | 6-2,2-6,13-11 |
| ITF Women Oeiras WD | 2018/05/23 15:00 | Morales M F / Oliveira L v Klasen A / Koelzer R | 1-6,2-6 |
| ITF Women Solarino WD | 2018/03/06 13:30 | Kawa K / Talbi S v Klasen A / Koelzer R | 2-6,6-3,10-4 |
| ITF Women Solarino WD | 2018/03/05 12:00 | Klasen A / Koelzer R v Napolitano V / Tona M | 6-2,6-1 |