| German Championship Women | 2021/12/06 09:00 | Meggie Raidt v Ellen Linsenbolz | 5-7,5-7 |
| ITF - W15 Monastir | 2021/11/29 11:30 | Sopiko Tsitskishvili v Hering, Katharina | 2-6,6-4,12-10 |
| ITF - W15 Monastir | 2021/11/23 09:00 | Hering, Katharina v Sonay Kartal | 2-6,0-6 |
| ITF W25 Petange | 2021/11/14 11:00 | Hering, Katharina v Eva Vedder | 2-6,1-6 |
| ITF - W15 Monastir | 2021/10/20 10:25 | Hering, Katharina v Crescenzi, Giulia | 1-6,3-6 |
| ITF - W15 Monastir | 2021/10/12 09:45 | Anja Wildgruber v Hering, Katharina | 7-6,6-1 |
| ITF W15 Dijon | 2021/09/14 11:25 | Arina Gabriela Vasilescu v Hering, Katharina | 6-4,6-2 |
| ITF W15 Wanfercee-Baulet | 2021/08/24 09:10 | Hering, Katharina v Samavati, Sofia Nami | 0-6,2-6 |
| ITF W15 Erwitte | 2021/08/18 14:20 | Angelina Wirges v Hering, Katharina | 6-3,4-6,6-0 |