Stadium: Cancha 2 Round: 19 Ground: Clay
| WTA Bogota | 2021/04/03 15:00 | Clara Burel v Katharina Gerlach | 3-6,6-1,4-6 |
| ITF W25 Buenos Aires | 2021/03/26 12:00 | Katharina Gerlach v Carolina Alves | 4-6,1-6 |
| ITF W25 Buenos Aires | 2021/03/24 16:10 | Katharina Gerlach v Diana Marcinkevica | 6-0,6-1 |
| ITF W25 Altenkirchen | 2021/02/18 13:10 | Cristina Bucsa v Katharina Gerlach | 6-1,6-3 |
| ITF W25 Altenkirchen | 2021/02/17 09:30 | Dalma Galfi v Katharina Gerlach | 6-7,3-6 |
| ITF W25 Altenkirchen | 2021/02/15 14:20 | Katharina Gerlach v Simona Waltert | 1-6,0-6 |
| ITF W25 Altenkirchen | 2021/02/14 12:30 | Katharina Gerlach v Shiho Akita | 6-0,5-7,10-8 |
| ITF W60 Rome GA | 2021/01/28 00:10 | Irene Burillo Escorihuela v Katharina Gerlach | 3-6,6-2,6-1 |
| WTA Bogota | 2021/04/03 15:00 | Daniela Seguel v Danielle Lao | 6-1,6-2 |
| ITF W25 Buenos Aires | 2021/03/24 13:00 | Daniela Seguel v Beatriz Haddad Maia | 5-7,2-6 |
| ITF W25 Grenoble | 2021/02/10 13:15 | Daniela Seguel v Camilla Rosatello | 6-7,3-6 |
| ITF W60 Andrezieux-Boutheon | 2021/01/25 12:00 | Daniela Seguel v Urszula Radwanska | 6-3,3-6,9-11 |
| Australian Open Women | 2021/01/12 09:40 | Daniela Seguel v Aleksandra Krunic | 2-6,6-2,2-6 |
| Australian Open Women | 2021/01/10 11:35 | Daniela Seguel v Bibiane Schoofs | 6-3,7-6 |
| ITF W25 LPD Gran Canaria | 2020/11/18 14:30 | Daniela Seguel v Oksana Selekhmeteva | 7-5,3-6,1-6 |
| ITF W25 Reims | 2020/10/20 11:40 | Daniela Seguel v Xinyu Wang | 1-6,4-6 |