Stadion: Center Court Round: 45 Ground: Carpet indoor
| ITF Damen - W25 - Altenkirchen | 2021/02/14 12:30 | Katharina Gerlach v Shiho Akita | 6-0,5-7,10-8 |
| ITF Damen - W60 - Rome, GA | 2021/01/28 00:10 | Irene Burillo Escorihuela v Katharina Gerlach | 3-6,6-2,6-1 |
| ITF Damen - W25 - Fujairah | 2021/01/19 09:45 | Katharina Gerlach v Xinyu Wang | 1-6,2-6 |
| ITF Damen - W25 - Fujairah | 2021/01/18 07:35 | Katharina Gerlach v Marija Semenistaja | 6-0,6-0 |
| Australian Open - Frauen | 2021/01/12 13:25 | Katharina Gerlach v Mayo Hibi | 3-6,4-6 |
| Australian Open - Frauen | 2021/01/11 12:55 | Stefanie Voegele v Katharina Gerlach | 3-6,4-6 |
| ITF Frauen - W25 - Selva Gardena | 2020/12/15 16:00 | Tena Lukas v Katharina Gerlach | 7-5,7-6 |
| German Championship - Frauen | 2020/12/10 12:00 | Katharina Gerlach v Mara Guth | 5-7,6-4,2-6 |
| ITF Damen - W25 - Altenkirchen | 2021/02/14 11:00 | Selina Dal v Simona Waltert | 3-6,2-6 |
| ITF Damen - W25 - Grenoble | 2021/02/08 09:20 | Kimberley Zimmermann v Simona Waltert | 6-4,6-4 |
| ITF Damen - W25 - Grenoble | 2021/02/07 10:05 | Amandine Monnot v Simona Waltert | 3-6,3-6 |
| ITF Frauen - W15 - Manacor | 2021/01/31 11:00 | Simona Waltert v Yvonne Cavalle-Reimers | 6-2,7-6 |
| ITF Frauen - W15 - Manacor | 2021/01/30 12:05 | Simona Waltert v Shiho Akita | 6-3,6-4 |
| ITF Frauen - W15 - Manacor | 2021/01/29 10:00 | Simona Waltert v Maria G Carrasco | 7-6,6-4 |
| ITF Frauen - W15 - Manacor | 2021/01/28 12:10 | Simona Waltert v Noemi Basiletti | 6-3,6-3 |
| ITF Frauen - W15 - Manacor | 2021/01/27 09:30 | Simona Waltert v Oksana Selekhmeteva | 6-4,6-2 |