Stadium: Center Round: 25 Ground: Clay
| WTA Nurnberg | 2019/05/19 10:15 | Jana Cepelova v Katharina Gerlach | 3-6,6-4,6-4 |
| WTA Nurnberg | 2019/05/18 12:35 | Katharina Gerlach v Pemra Ozgen | 6-3,6-0 |
| ITF W60 Wiesbaden | 2019/05/01 12:10 | Katharina Gerlach v Anna Zaja | 4-6,6-3,0-6 |
| ITF W25 Tunis | 2019/04/11 11:50 | Lara Salden v Katharina Gerlach | 6-2,7-5 |
| ITF W25 Tunis | 2019/04/10 12:00 | Martina Caregaro v Katharina Gerlach | 7-5,1-6,3-6 |
| ITF W25 Canberra | 2019/03/27 04:50 | Leylah Annie Fernandez v Katharina Gerlach | 6-3,3-6,6-4 |
| ITF W25 Canberra | 2019/03/22 01:15 | Katharina Gerlach v Destanee Aiava | 2-6,6-4,1-6 |
| ITF W25 Canberra | 2019/03/21 01:20 | Cagla Buyukakcay v Katharina Gerlach | 6-7,3-6 |
| ITF W15 Tabarka | 2019/05/31 10:30 | Joanne Zuger v Barbara Gatica | 6-4,2-6,3-6 |
| ITF W15 Tabarka | 2019/05/30 10:40 | Joanne Zuger v Raphaelle Lacasse | 6-7,6-1,6-2 |
| ITF W15 Tabarka | 2019/05/29 11:30 | Joanne Zuger v Rebeca Pereira | 2-6,7-5,6-2 |
| ITF W15 Tabarka | 2019/05/24 10:05 | Stefania Rogozinska-Dzik v Joanne Zuger | 4-6,4-6 |
| ITF W15 Tabarka | 2019/05/23 08:30 | Rebeca Pereira v Joanne Zuger | 4-6,4-6 |
| ITF W15 Tabarka | 2019/05/22 10:55 | Maria Gomez v Joanne Zuger | 3-6,0-6 |
| ITF W25 Chiasso | 2019/04/22 15:35 | Lucia Bronzetti v Joanne Zuger | 6-3,6-1 |
| ITF W25 Chiasso | 2019/04/22 09:00 | Joanne Zuger v Tess Sugnaux | 3-6,6-2,12-10 |