Ola Hobber Nilsen has officiated 19 matches on record, averaging 2.6 cards and 23.8 fouls per game — a lenient official. A player is dismissed roughly once every 3 games, and the spot is pointed to 0.16 times per match. Home teams win 53% of matches under him, drawing 11% and losing 37%. Most active in the Eliteserien (17 matches). 35% of his bookings come after the 75th minute, with the first card around the 41'. He cards more than 46% of Eliteserien 2017 referees.