Ondřej Lerch has officiated 193 matches on record, averaging 1.5 cards and 2.9 fouls per game — a lenient official. A player is dismissed roughly once every 39 games, and the spot is pointed to 0.16 times per match. Home teams win 47% of matches under him, drawing 25% and losing 28%. Most active in the Chance Národní Liga (105 matches). 30% of his bookings come after the 75th minute, with the first card around the 33'.