Stadium: Court 1 Round: 27 Ground: Clay
| ITF W25 Oeiras | 2021/04/29 12:40 | Malene Helgo v Laura Pigossi | 3-6,6-4,7-6 |
| ITF W25 Oeiras | 2021/04/28 15:00 | Minella, Mandy v Malene Helgo | 7-5,5-7,6-7 |
| ITF W25 Oeiras | 2021/04/27 10:30 | Fanny Ostlund v Malene Helgo | 7-6,2-6,5-7 |
| ITF W25 Calvi | 2021/04/13 12:00 | Malene Helgo v Susan Bandecchi | 4-6,6-2,2-6 |
| ITF W15 Bratislava | 2021/03/24 11:05 | Malene Helgo v Linda Noskova | 3-6,4-6 |
| ITF W15 Bratislava | 2021/03/19 09:00 | Rebecca Sramkova v Malene Helgo | 6-3,6-7,7-6 |
| ITF W15 Bratislava | 2021/03/18 09:00 | Malene Helgo v Julia Avdeeva | 6-3,6-4 |
| ITF W15 Bratislava | 2021/03/17 10:25 | Vlkovska, Veronika v Malene Helgo | 4-6,3-6 |
| ITF W25 Oeiras | 2021/04/29 10:00 | Amandine Hesse v Gerlach, Katharina | 1-6,2-6 |
| ITF W25 Oeiras | 2021/04/28 12:10 | Ekaterina Makarova v Gerlach, Katharina | 4-6,6-2,3-6 |
| WTA - Stuttgart | 2021/04/18 12:30 | Voegele, Stefanie v Gerlach, Katharina | 6-3,6-1 |
| WTA - Stuttgart | 2021/04/17 15:55 | Gerlach, Katharina v Laura Ioana Paar | 6-3,7-5 |
| WTA Charleston Qual | 2021/04/10 15:00 | Gerlach, Katharina v Storm Hunter | 3-6,2-6 |
| WTA - Bogota | 2021/04/04 15:00 | Gerlach, Katharina v Daniela Seguel | 1-6,1-6 |
| WTA - Bogota | 2021/04/03 15:00 | Clara Burel v Gerlach, Katharina | 3-6,6-1,4-6 |
| ITF W25 Buenos Aires | 2021/03/26 12:00 | Gerlach, Katharina v Carolina Alves | 4-6,1-6 |