Hiromichi Oka has officiated 233 matches on record, averaging 1.8 cards and 9.1 fouls per game โ a lenient official. A player is dismissed roughly once every 11 games, and the spot is pointed to 0.08 times per match. Home teams win 37% of matches under him, drawing 26% and losing 37%. Most active in the J2-League (163 matches). 33% of his bookings come after the 75th minute, with the first card around the 35'. He cards more than 100% of J2-League 2021 referees.