Much was about Kalmar initially and the lead goal also came before the end of the first half.
A nice cross signed by Calle Gustafsson in the 42nd minute reached Sebastian Nanasi inside the penalty area.
The latter took the ball down before pulling over and putting 1-0 between the legs of Hákon Valdimarsson in Elfsborg's goal.
- That's a bit of what we've been practicing, finding the diagonal pass on the far side.
Then the defense stands and sleeps a little so I become quite open, says Nanasi.
A short time later it was also 2-0.
Elfsborg did not manage to get the ball away in the penalty kill and after a messy situation, Filip Sachpekidis was able to push the visitors' second goal into the goal.
Three early changes for Elfsborg
Elfsborg had a significantly tougher start with three substitutions already in the first 30 minutes of the match.
First Per Frick was forced to break after taking the calf and then Simon Strand stepped off, also with calf problems.
At the same exchange, Alexander Bernhardsson was also replaced and replaced by Jacob Ondrejka.
- It is clear that it will be jerky, but it is part of the sport, so you just have to buy into it, says Elfsborg's Rasmus Alm.
Despite Kalmar pressing, Elfsborg got the chance to break the deadlock - among other things after offers from goalkeeper Ricardo Friedrich, who twice bent and fluttered and played the ball straight at Elfsborg's feet.
In the second half, Friedrich was forced to step off due to injury.
Jakob Kindberg replaced and thus made his Allsvenskan debut.
Elfsborg had some chances in the second half, including a post hit, but Kindberg kept a clean sheet.
Kalmar won 2-0 and now have seven straight games without a loss.