Þorvaldur Arnason has officiated 218 matches on record, averaging 1.7 cards and 3.6 fouls per game — a lenient official. A player is dismissed roughly once every 13 games, and the spot is pointed to 0.16 times per match. Home teams win 44% of matches under him, drawing 20% and losing 36%. Most active in the Besta deild (149 matches). 33% of his bookings come after the 75th minute, with the first card around the 35'.