| Superettan | 27/05/18 | Halmstads BK | - | Östers IF | 3:0 | ||||
| Superettan | 10/11/18 | Östers IF | - | Halmstads BK | 1:4 | ||||
| Cupen | 17/02/19 | Falkenbergs FF | - | Östers IF | 1:2 |  |
| Superettan | 27/05/18 | Halmstads BK | - | Östers IF | 3:0 | ||||
| Superettan | 10/11/18 | Östers IF | - | Halmstads BK | 1:4 | ||||
| Cupen | 17/02/19 | Falkenbergs FF | - | Östers IF | 1:2 | |
| Marcus Klingenberg Mathisen | |
| Born: | 27.02.1996 |
| Place of birth: |
Albertslund, 
Denmark |
| Nationality: |
Denmark
|
| Height: | 185 cm |
| Weight: | 79 kg |
| Position(s): | Centre Back Defensive Midfielder |
| Foot: | right |