Stadium: Court 4 Round: 25 Ground: Clay
| ITF - W15 Antalya | 2021/05/18 07:00 | Hering, Katharina v Romana Cisovska | 3-6,5-7 |
| ITF - W15 Antalya | 2021/05/17 07:00 | Hering, Katharina v Dshandshgava, Irina | 6-3,6-2 |
| ITF - W15 Antalya | 2021/05/10 07:00 | Arianna Zucchini v Hering, Katharina | 7-6,5-7,11-9 |
| ITF - W15 Monastir | 2021/04/12 11:00 | Nina Radovanovic v Hering, Katharina | 6-1,6-4 |
| ITF - W15 Monastir | 2021/04/06 08:00 | Hering, Katharina v Catini, Chiara | 6-7,2-6 |
| ITF - W15 Monastir | 2021/03/07 12:00 | Olivia Gram v Hering, Katharina | 6-4,4-6,10-5 |
| ITF - W15 Monastir | 2021/03/04 09:30 | Hering, Katharina v Ushijima, Risa | 6-7,3-6 |
| ITF - W15 Monastir | 2021/03/02 12:00 | Oana Gavrila v Hering, Katharina | 1-6,6-3,1-6 |
| ITF W60 Biarritz | 2021/07/12 15:50 | Magali Kempen v Diana Martynov | 6-1,4-6,10-5 |
| ITF W100 Contrexeville | 2021/07/04 09:10 | Diana Martynov v Kamilla Bartone | 4-6,2-6 |
| ITF W25 Wroclaw | 2021/06/30 11:25 | Diana Martynov v Weronika Falkowska | 3-6,2-6 |
| ITF W25 Wroclaw | 2021/06/28 07:50 | Malene Helgo v Diana Martynov | 6-0,6-1 |
| ITF W25 Klosters | 2021/06/20 12:50 | Mader, Corina v Diana Martynov | 6-4,6-4 |
| ITF W25 Denain | 2021/06/14 09:20 | Diana Martynov v Sinja Kraus | 2-6,1-6 |
| ITF W25 Otocec | 2021/06/01 09:50 | Diana Martynov v Manca Pislak | 5-7,7-6,8-10 |
| ITF W25 Otocec | 2021/05/30 08:00 | Diana Martynov v Kusy Alzugaray, Janika | 6-1,6-1 |