Other match officials (two assistant referees,
The referee, assistant referees, fourth official, additional assistant referees and reserve assistant referee are the ‘on-field’ match officials.
The VAR and AVAR are the ‘video’ match officials (VMOs) and assist the referee in accordance with the Laws of the Game and the VAR protocol.
The match officials operate under the direction of the referee. In the event of undue interference or improper conduct, the referee will relieve them of their duties and make a report to the appropriate authorities.
The ‘on-field’ match officials assist the referee with inspecting the field of play, the balls and players’ equipment (including if problems have been resolved) and maintaining records of time, goals, misconduct etc.
Competition rules must state clearly who replaces a match official who is unable to start or continue and any associated changes. In particular, it must be clear whether, if the referee is unable to start or continue, the fourth official or the senior assistant referee or senior additional assistant referee takes over.