Jumpei Iida has officiated 443 matches on record, averaging 1.5 cards and 14.3 fouls per game β a lenient official. A player is dismissed roughly once every 18 games, and the spot is pointed to 0.14 times per match. Home teams win 43% of matches under him, drawing 23% and losing 34%. Most active in the J1 League (245 matches). 33% of his bookings come after the 75th minute, with the first card around the 39'. He cards more than 25% of J1 League 2025 referees.