Over the last 12 months Kristoffer Karlsson has refereed 26 games, comprising 22 Swedish Allsvenskan games, 2 Conference League games and 2 International Friendlies games. In addition he has been the Fourth Official 33 times.
During this period he has issued 0 yellow card at a rate of 0 per game and 0 red card at a rate of 0 per game.
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