Stadium: Court 1 Round: 54 Ground: Clay
| ITF - Braunschweig W25 | 2021/08/26 09:00 | Mara Guth v Valeriya Strakhova | 5-7,4-6 |
| ITF - Braunschweig W25 | 2021/08/25 12:05 | Martina Caregaro v Mara Guth | 3-6,2-6 |
| ITF - Erwitte W15 | 2021/08/20 15:30 | Aneta Kucmova v Mara Guth | 7-5,6-2 |
| ITF - Erwitte W15 | 2021/08/19 13:00 | Mara Guth v Jantje Tilbuerger | 6-1,6-1 |
| ITF - Erwitte W15 | 2021/08/18 13:05 | Mina Hodzic v Mara Guth | 2-6,3-6 |
| WTA Bad Homburg | 2021/06/20 14:30 | Mara Guth v Nadia Podoroska | 0-6,3-6 |
| ITF - Hamburg W25 | 2021/01/10 13:00 | Mara Guth v Arianne Hartono | 2-6,0-6 |
| Niemcy - Championship - Kobiety | 2020/12/11 10:30 | Mara Guth v Nastasja Schunk | 1-6,3-6 |
| ITF - Montreux W60 | 2021/09/08 09:15 | Diana Marcinkevica v Susan Bandecchi | 4-6,1-6 |
| ITF - Collonge-Bellerive W60 | 2021/09/01 10:40 | Diana Marcinkevica v Estelle Cascino | 4-6,4-6 |
| ITF - Verbier W25 | 2021/08/25 07:55 | Ekaterina Makarova v Diana Marcinkevica | 2-6,6-1,6-3 |
| ITF - Radom W25 | 2021/08/11 11:05 | Anastasia Zakharova v Diana Marcinkevica | 6-1,6-4 |
| ITF - Bydgoszcz W25 | 2021/08/04 09:15 | Diana Marcinkevica v Nastasja Schunk | 1-6,0-6 |
| ITF - Grodzisk Mazowiecki W60 | 2021/07/28 08:00 | Diana Marcinkevica v Maria Lourdes Carle | 2-6,2-6 |
| ITF - Les Contamines W25 | 2021/07/22 11:25 | Diana Marcinkevica v Emeline Dartron | 6-7,6-4,2-6 |
| ITF - Les Contamines W25 | 2021/07/20 13:25 | Diana Marcinkevica v Margaux Orange | 6-4,6-3 |