Östersund is still chasing its first Allsvenskan victory since the restart after the summer break.
Against Kalmar, they looked to get at least one point, but that did not happen.
With four minutes left of regular time, Kalmar's Nils Fröling stayed ahead and nodded in the match's only goal.
The goal was the 21-year-old's third of the season, the two previously came in the latest away match against IFK Norrköping.
- It feels good.
It was nice to be able to set that goal.
There have been many bad shots from my side, so I am possible, says the goal scorer in Discovery +.
Östersund stuck in the bottom
Kalmar now has three victories in the last four, and climbs to a sixth place in the table - the same points as the fifth Hammarby.
For Östersund's, the cancer continues, as they have only taken one point in the last eight matches.
Thus, ÖFK remains in the jumbo place, eight points from safe ground.
- We got into the match in the second, unfortunately we did not get any of it, says ÖFK's coach Amir Azrafshan.