Estadio: Reinert Center Court Round: 25 Ground: Clay
| ITF W25 Stuttgart | 2019/07/02 16:30 | Katharina Gerlach v Caroline Werner | 0-6,3-6 |
| ITF W25 Darmstadt | 2019/06/25 15:45 | Olga Govortsova v Katharina Gerlach | 6-1,6-1 |
| ITF W25 Klosters | 2019/06/19 07:00 | Katharina Gerlach v Joanne Zuger | 4-6,2-6 |
| WTA Núremberg | 2019/05/19 10:15 | Jana Cepelova v Katharina Gerlach | 3-6,6-4,6-4 |
| WTA Núremberg | 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 Denain | 2019/07/06 12:30 | Katharina Hobgarski v Elitsa Kostova | 6-1,6-3 |
| ITF W25 Denain | 2019/07/05 11:25 | Valeriya Strakhova v Elitsa Kostova | 3-6,4-6 |
| ITF W25 Denain | 2019/07/04 08:00 | Nathaly Kurata v Elitsa Kostova | 6-4,0-6,1-6 |
| ITF W25 Denain | 2019/07/03 10:00 | Ganna Poznikhirenko v Elitsa Kostova | 3-6,3-6 |
| ITF W25 Montpellier | 2019/06/20 13:00 | Elitsa Kostova v Elizabeth Halbauer | 1-6,4-6 |
| ITF W25 Montpellier | 2019/06/19 14:00 | Elitsa Kostova v Eleonora Molinaro | 7-6,6-3 |
| ITF W25 Prerov | 2019/06/16 08:00 | Anhelina Kalinina v Elitsa Kostova | 6-1,4-6,6-1 |
| ITF W25 Prerov | 2019/06/15 09:50 | Elitsa Kostova v Amanda Carreras | 6-2,6-3 |