Mario Vlk has officiated 72 matches on record, averaging 0.7 cards and 14.1 fouls per game — a lenient official. Home teams win 49% of matches under him, drawing 22% and losing 29%. Most active in the Niké Liga (68 matches). 34% of his bookings come after the 75th minute, with the first card around the 34'. He cards more than 14% of Niké Liga 2017/2018 referees.