Frölunda decided the ice hockey match in front of 12,044 spectators in Scandinavium at the beginning of the third period when Arttu Ruotsalainen pushed the puck into the net with a direct shot to 4–3 in powerplay.
A few minutes later, a fight broke out behind the Luleå goal after Frölunda's team captain Henrik Tömmernes had shot a shot at the visiting goalkeeper Joel Lassinantti despite the game being stopped for offside.
The incident irritated the visiting team's players, a brawl ensued, and Nicklas Lasu and Frédéric Allard both received match penalties after a fight.
Linus Weissbach later decided the match with his 5–3 goal at the end of the third period.
Frölunda has thus turned the best-of-seven series to a 2–1 lead after a 5–2 win in Luleå on Monday. On Saturday, Luleå won match 1 with 4–2 in Norrbotten.
Semifinal 4 will also be played in Scandinavium in Gothenburg, on Friday.