Stadium: Centre Court Versmold Round: 1
| DTB German Pro Series – naised | 2020/06/18 16:25 | Katharina Gerlach v Julyette M J Steur | 7-5,6-1 |
| DTB German Pro Series – naised | 2020/06/18 07:00 | Katharina Gerlach v Mina Hodzic | 6-3,6-4 |
| DTB German Pro Series – naised | 2020/06/16 14:05 | Katharina Gerlach v Angelina Wirges | 6-4,6-1 |
| ITF W25 Orlando | 2019/11/13 14:55 | Maria Lourdes Carle v Katharina Gerlach | 4-6,6-3,7-5 |
| ITF W60 Colina | 2019/11/08 17:00 | Allie Kiick v Katharina Gerlach | 6-4,6-4 |
| ITF W60 Colina | 2019/11/07 15:00 | Carolina Alves v Katharina Gerlach | 6-7,6-4,5-7 |
| ITF W60 Colina | 2019/11/06 14:00 | Luisa Stefani v Katharina Gerlach | 1-6,2-6 |
| ITF W60 Asuncion | 2019/10/29 22:50 | Renata Zarazua v Katharina Gerlach | 6-2,6-0 |
| DTB German Pro Series – naised | 2020/06/18 11:00 | Julia Middendorf v Joelle Lilly Sophie Steur | 1-6,7-5,6-2 |
| DTB German Pro Series – naised | 2020/06/17 08:00 | Vivian Heisen v Julia Middendorf | 5-7,6-4,3-6 |
| DTB German Pro Series – naised | 2020/06/16 12:00 | Anna-Lena Friedsam v Julia Middendorf | 6-0,3-6,2-6 |
| ITF W25 Braunschweig | 2019/08/21 11:00 | Valeriya Strakhova v Julia Middendorf | 6-0,6-4 |
| ITF Women Hechingen Qual | 2018/08/05 09:00 | Julia Middendorf v Laura Ioana Paar | 5-7,3-6 |
| ITF Women Horb | 2018/07/25 10:00 | Julia Middendorf v Carmen Schultheiss | 2-6,2-6 |
| WTA Stuttgart Qual | 2018/04/21 16:50 | Julia Middendorf v Marta Kostyuk | 1-6,2-6 |