Ryuji Sato has officiated 417 matches on record, averaging 1.5 cards and 14.1 fouls per game β a lenient official. A player is dismissed roughly once every 15 games, and the spot is pointed to 0.12 times per match. Home teams win 46% of matches under him, drawing 25% and losing 29%. Most active in the J1 League (215 matches). 33% of his bookings come after the 75th minute, with the first card around the 37'. He cards more than 72% of J1 League 2022 referees.