"Bad officiating" refers to the unfair or poor judgment by referees, umpires, or officials in a sports game or event. It implies that the officials' decisions have negatively impacted the fairness and outcome of the competition. Full definition
Since Mr. Wenger blamed every match he lost on bad officiating. (justarsenal.com)
Mike dean was terrible and really ruined a truly good game of football, he will probably not change his mind on the decisions or be punished for bad officiating which is really the worst thing here. (justarsenal.com)