Stadium: Court 3 Round: 26
| ITF Women Rotterdam | 2018/08/20 10:00 | Hering, Katharina v Orange, Margaux | 6-3,6-7,7-6 |
| ITF Women Rotterdam | 2018/08/19 07:00 | Hering, Katharina v Dijkman, Dewi | 6-1,6-2 |
| ITF Women Leipzig | 2018/08/12 09:00 | Khabibulina, Albina v Hering, Katharina | 3-6,6-3,6-4 |
| Koksijde, Singles W-WITF-BEL-04A | 2018/08/07 12:00 | Hering, Katharina v Lucrezia Stefanini | 6-2,3-6,2-6 |
| Koksijde, Singles W-WITF-BEL-04A | 2018/08/05 12:15 | Hering, Katharina v Delgado, Luniuska | 6-1,3-6,6-3 |
| Koksijde, Singles W-WITF-BEL-04A | 2018/08/04 10:00 | Hering, Katharina v Glaude, Laure Line | 6-1,6-1 |
| ITF Women Horb Qual | 2018/07/24 10:00 | Lea Boskovic v Hering, Katharina | 6-1,6-7,6-2 |
| ITF Women Horb Qual | 2018/07/23 11:30 | Himari Sato v Hering, Katharina | 1-6,4-6 |
| ITF Women Rotterdam | 2018/08/22 10:55 | Munozova, Anette v Natalia Siedliska | 1-6,2-6 |
| ITF Women Hechingen Qual | 2018/08/05 15:30 | Natalia Siedliska v Skamlova, Chantal | 7-6,3-6,1-6 |
| ITF Women Horb Qual | 2018/07/24 12:35 | Kennel, Karin v Natalia Siedliska | 6-4,6-2 |
| ITF Women Horb Qual | 2018/07/23 13:00 | Pipa, Shaline-Doreen v Natalia Siedliska | 3-6,3-6 |
| Matchs amicaux U18 | 2018/07/10 08:00 | Natalia Siedliska v Yudanov, Marina | 3-6,6-7 |
| ITF Women Aschaffenburg Qual | 2018/07/02 13:15 | Angelica Moratelli v Natalia Siedliska | 6-4,3-6,6-3 |
| ITF Women Hammamet | 2018/06/16 09:00 | Claudia Hoste Ferrer v Natalia Siedliska | 4-6,4-6 |
| ITF Women Hammamet | 2018/06/15 09:00 | Natalia Siedliska v Luini, Sofia | 3-6,6-1,6-3 |