| Oberliga Westfalen 2017/2018 - Appearances as Assistant | ||||
| 25/02/2018 | 1. FC Kaan-Marienborn | - | TuS Haltern | 0:1 |
| 06/05/2018 | Sportfreunde Siegen | - | TuS Ennepetal | 2:2 |
| Oberliga Westfalen 2017/2018 - Appearances as Assistant | ||||
| 25/02/2018 | 1. FC Kaan-Marienborn | - | TuS Haltern | 0:1 |
| 06/05/2018 | Sportfreunde Siegen | - | TuS Ennepetal | 2:2 |
| Complete name: | Jan Maßmann |
| Born: | 29/09/1988 |
| Place of birth: |
Holzwickede, 
Germany |
| Residence: | Bochum |
| Nationality: |
Germany |
| Profession: | Gesundheitsmanager |
| Club: | SSV Mühlhausen-Uelzen 1949 |
| Height: | 186 cm |
| Weight: | 80 kg |