| Youth Youth League 2017/2018 - Appearances as Assistant | ||||
| 27/09/2017 | RSC Anderlecht | - | Celtic FC | 1:2 |
| 18/10/2017 | AC Sparta Praha | - | F91 Dudelange | 3:1 |
| Youth Youth League 2017/2018 - Appearances as Assistant | ||||
| 27/09/2017 | RSC Anderlecht | - | Celtic FC | 1:2 |
| 18/10/2017 | AC Sparta Praha | - | F91 Dudelange | 3:1 |
| Complete name: | Sten Klaasen |
| Born: | 09/05/1982 |
| Place of birth: |
Estonia |
| Nationality: |
Estonia |