FBC Kalmarsund had started the season with ten victories and topped the table before the meeting with runner-up Storvreta.
The home team Storvreta took the lead twice in the league final, but Kalmarsund equalized both times.
When it looked like going to extra time, the big star Alexander Rudd struck.
With 23 seconds left, he found the net with a direct shot and fixed all three points to Storwreta.
Despite the loss, Kalmarsund continues to lead the series by three points, but runner-up Storvreta has one game less played.