After Malmö's dramatic turn against Sirius last Saturday, three points were of the utmost importance so that Elfsborg would not lose to Skånelaget in the Allsvenskan top.
And it was a taste start for the people of Borås.
After a quarter, Johan Larsson broke a pass at the center line and started a counterattack.
The sequence ended with Jeppe Okkels shooting Rasmus Alm's low input to 1-0.
Norrköping's reply, however, came shortly afterwards when Carl Björk placed the receipt,
But the initial goal party in Norrköping would continue and this time it was Elfsborg's turn.
Once again, it was a low input, this time from Johan Larsson, who looked into the penalty area where Per Frick angled in 2-1 in match minute 22.
After half an hour of play, however, the conditions for Elfsborg changed significantly.
Simon Strand pulled down Ishaq Abdulrazak and was awarded a second yellow card.
Strand was really annoyed after being shown out and knocked down a TV camera on the way into the locker room.
Norrköping, who need all the points they can get to hang on to the top teams, pressed with one man more on the field and would eventually get a reward for the effort.
Linus Wahlquist equalized in the 79th minute and five minutes later Samuel Adegbenro thumped into the lead.
The match is in progress.