Jonas Karlsson has officiated 88 matches on record, averaging 1.0 cards and 2.8 fouls per game — a lenient official. A player is dismissed roughly once every 15 games, and the spot is pointed to 0.07 times per match. Home teams win 47% of matches under him, drawing 22% and losing 32%. Most active in the Ettan: South (41 matches). 35% of his bookings come after the 75th minute, with the first card around the 37'.