In the 53rd minute, Mjällby's U21 national team player Amin Sarr sent in a delicious 2-0 in the far cross behind August Ahlin in the Sirius goal.
In that situation, there was really nothing to suggest that Sirius, with three straight losses behind him, would get up on Strandvallen.
But the guests did not give up.
Adam Ståhl only reduced in the 58th and seven minutes later the substitute Edi Sylisufaj forced in 2-2 for Sirius.
And there would be more.
"Really fucking good"
After 88 minutes, a mistake by the home side's left defense allowed Ståhl to get through. He outclassed the home side's keeper, adding another goal for the visitors.
The blue-blacks were able to celebrate a long-awaited three-pointer a little later, which takes the team up to tenth place in the table.
- Really damn good to get three points, says match winner Ståhl to Discovery +.
Instead, it is Mjällby who, with three matches left, are more risky in the battle to avoid qualifiers to stay in the football Allsvenskan.
- Really sad that we let them into the match, says Amin Sarr to Discovery +.
Sirius has 33 points and Mjällby 31. Degerfors, currently in the scary qualifying spot, has 28 and meets the 32-pointer Häcken away on Sunday.
The group of teams involved in the qualifying battle also includes IFK Gothenburg, Varberg (both 34 points) and Halmstad (30).