Thorben Siewer has officiated 144 matches on record, averaging 2.6 cards and 16.5 fouls per game — a lenient official. A player is dismissed roughly once every 9 games, and the spot is pointed to 0.20 times per match. Home teams win 45% of matches under him, drawing 28% and losing 27%. Most active in the 3. Liga (75 matches). 33% of his bookings come after the 75th minute, with the first card around the 35'.