| Nuremberg, Germany | 2017/05/23 10:05 | Bertens, Kiki v Gerlach, Katharina | 6-2,6-1 |
| ITF Women Wiesbaden | 2017/05/05 08:45 | Petra Martic v Gerlach, Katharina | 7-5,6-0 |
| ITF Women Wiesbaden | 2017/05/03 09:55 | Gerlach, Katharina v Kathleen Kanev | 6-0,6-2 |
| ITF Women Wiesbaden | 2017/05/02 13:00 | Schaeder, Laura v Gerlach, Katharina | 1-6,4-6 |
| ITF Women Wiesbaden | 2017/05/02 07:30 | Rittberger, Sabrina v Gerlach, Katharina | 1-6,4-6 |
| WTA Stuttgart Qual | 2017/04/22 12:25 | Lesley Pattinama Kerkhove v Gerlach, Katharina | 7-5,6-4 |
| ITF Women Hammamet | 2017/04/14 09:00 | Brito, Fernanda v Gerlach, Katharina | 6-2,6-0 |
| ITF Women Hammamet | 2017/04/13 08:30 | Januskova, Petra v Gerlach, Katharina | 1-6,3-6 |
| ITF Women Essen | 2017/06/04 09:30 | Vukota, Alexandra v Pysson, Justine | 2-6,1-6 |
| ITF Women Engis | 2016/09/06 10:00 | Pysson, Justine v Grimm, Chiara | 1-6,2-6 |