Stadium: Court 6 Round: 54
| ITF Women Versmold Qual | 2018/07/08 12:05 | Pemra Ozgen v Hering, Katharina | 3-6,6-2,6-4 |
| ITF Women Aschaffenburg Qual | 2018/07/01 12:00 | Solovyeva, Valeria v Hering, Katharina | 6-2,6-0 |
| ITF Women Aschaffenburg Qual | 2018/07/01 08:00 | Hering, Katharina v Tereza Polakova | 6-1,6-3 |
| ITF Women Bastad | 2018/06/26 11:05 | Anna Bondar v Hering, Katharina | 6-4,6-3 |
| ITF Women Bastad Qual | 2018/06/25 09:40 | Barritza, Karen v Hering, Katharina | 6-2,7-6 |
| ITF Women Bastad Qual | 2018/06/24 11:45 | Zaar, Lisa v Hering, Katharina | 3-6,0-6 |
| Obidos, Singles W-WITF-POR-12A | 2018/06/06 09:30 | Dejana Radanovic v Hering, Katharina | 6-2,6-1 |
| ITF Women Obidos Qual | 2018/06/04 12:30 | Hering, Katharina v Neto, Sara | 6-0,6-0 |
| ITF Women Getxo | 2018/07/13 09:00 | Gonzalez, Montserrat v Koelzer, Romy | 6-2,6-2 |
| ITF Women Getxo | 2018/07/11 10:00 | Koelzer, Romy v Marina Bassols Ribera | 6-4,6-3 |
| ITF Women Getxo | 2018/07/09 09:20 | Koelzer, Romy v Daria Lodikova | 6-3,6-1 |
| ITF Women Getxo Qual | 2018/07/08 10:45 | Koelzer, Romy v Crivelletto, Jessica | 1-6,6-2,7-5 |
| ITF Women Getxo Qual | 2018/07/07 09:00 | Koelzer, Romy v Molina Megias, Carlota | 6-3,6-2 |
| ITF Women Bastad | 2018/06/28 10:30 | Koelzer, Romy v Isabella Shinikova | 6-4,3-6,1-6 |
| ITF Women Bastad | 2018/06/26 08:45 | Koelzer, Romy v Zmau, Michele Alexandra | 1-6,6-1,7-5 |
| ITF Women Ystad | 2018/06/21 14:15 | Kaja Juvan v Koelzer, Romy | 6-1,7-5 |