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Assistant referee (association football)

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Title: Assistant referee (association football)  
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Assistant referee (association football)

Austrian assistant referee Clemens Schüttengruber signalling that a offside offence has occurred

In offside offence has occurred, and advising the referee when an infringement of the Laws of the Game has occurred out of his or her view. Depending on the local match rules and the discretion of the referee, an assistant referee may also be responsible for various administrative tasks, for example managing substitutions, helping the referee control the players, or replacing the referee if he or she is unable to continue. The assistant referee functions in an advisory role, and all judgements made by an assistant referee may be overruled by the referee.

At higher levels of play the referee is also assisted by a fourth official. The fourth official's duties are usually administrative in nature and vary depending on the match rules and the discretion of the referee. Common duties for a fourth official may include managing technical areas and substitutions, maintaining a backup record of the score and cautions/send-offs, and displaying information on substitutions and extra time to spectators. Depending on the local match rules, the fourth official may replace the referee or one of the assistant referees if they are unable to continue.

General duties

An assistant referee officiates a match between Partick Thistle and Dundee United

Law 6 of the Laws of the Game specifies that "two assistant referees may be appointed". It also outlines the general duties of the assistant referees; however, their duties in a given game remain subject to the decision of the referee. These duties usually include indicating:

  • when the whole ball has passed outside the field of play
  • which side is entitled to return the ball into the field of play
  • when a player may be penalised for an offside offence
  • when a substitution is being requested, or assisting the fourth official (if present) in doing the same
  • when offences or other infringements of the Laws of the Game have been committed of which the referee does not have an adequate view

All decisions by the assistant referees are only advisory to the referee, i.e. their decisions are not binding and the referee is allowed to overrule an assistant. An assistant referee may also be called upon by the referee to provide an opinion regarding matters which the referee requires clarification on. Occasionally the assistant referee will assist in player management during free kicks, as well as provide visual assistance during penalty kicks. The assistant referees also usually assist the referee with preparatory and administrative functions.

Assistant referees wear a uniform identical to that of the referee and carry brightly-coloured flags (usually red, yellow, or some pattern involving those colours) which are used to indicate their decisions to the referee, players, and spectators. During the game each assistant referee oversees one touch-line and one end of the field utilising the diagonal system of control. The more senior of the two assistants will normally occupy the side of the field containing the technical areas, to help oversee substitutions. At higher levels of play, the assistant referees' flags may be equipped with buttons that the assistant referee may press to send an audible signal to the referee in order to get the referee's attention. Also at the highest levels of play, particularly in matches held in large stadiums, the entire officiating crew may be equipped with wireless microphones and earpieces to facilitate vocal communication across long distances or through loud stadium noise.

Assistant referees were formerly called linesmen. In 1996, the name was changed, primarily to better reflect the modern role of these officials, and secondarily to become non-gender specific. They are also sometimes incorrectly referred to as "referee's assistants". However the term "linesman" is still commonly used, including at lower levels of play where, if the match governing body does not appoint assistant referees to a match, a referee may be empowered to appoint volunteer "club linesmen" who may usually only assist the referee in judging whether the ball has left the field of play.

Fourth official

The fourth official assists the referee in a variety of tasks, and may be called upon to replace another match official.

The fourth official is a recent addition to the officiating crew. English referee and administrator Ken Aston introduced the practice of having a named replacement referee in 1966, but the International Football Association Board (IFAB) did not officially create the position until 1991, and listed only areas of responsibility. The fourth official is simply instructed to assist the referee at all times, and his duties are largely at the discretion of the referee. His usual duties can be broadly divided into assisting functions and a replacement function (see below).

The fourth official typically has a table a short distance from the touchline between the two teams' technical areas, however his positioning is not defined by the Laws of the Game.

Fourth official indicating there should be a minimum of two minutes of injury-time played

In usual practice, the fourth official assists the referee in the following ways:

  • Assisting with administrative functions before, during and after the match;
  • Assessment of players' equipment;
  • Ensuring substitutions are conducted in an orderly manner;
  • Notifying the referee of the details of the substitution, by means of numbered boards or electronic displays (where supplied);
  • Notifying the teams and spectators, by means of numbered boards or electronic displays where supplied, of the amount of time added on at the end of each half, after having been advised of this by the referee;
  • Acting as the contact point between the match officiating crew and any non-participants (such as stadium managers, security personnel, broadcast crews, and ball retrievers);
  • Maintaining decorum in the teams' technical areas and interceding in situations where coaches, bench personnel, or substitutes become agitated;

In practice, the fourth official becomes a key member of the officiating team, who can watch the field and players and advise the Referee on situations that are going on out of his sight. The fourth official keeps an extra set of records, and helps make sure the Referee does not make a serious error such as send off the player.[1]

The fourth official played a significant role in the 2006 World Cup Final when fourth official Luis Medina Cantalejo informed referee Horacio Elizondo of the headbutt of France's Zinedine Zidane against Marco Materazzi, resulting in Elizondo showing Zidane a red card and sending him from the field. French manager Raymond Domenech accused Cantalejo of using the replay board to initiate the process that led to Zidane's ejection, which would have broken FIFA rules, but FIFA maintained that Cantalejo did not breach any rules and acted properly.[2]

The fourth official serves as a replacement official in the event that one of the other officials (referee or assistant referees) cannot continue officiating (usually through injury).

In situations where an assistant referee is unable to continue, the fourth official replaces that assistant referee. In situations where the referee is unable to continue, the fourth official replaces the referee directly, or the senior assistant referee replaces the referee, with the fourth official in turn taking an assistant's position. Competition rules are supposed to clarify which of these options is to occur. If for some reason it is not stated, then typically the official with the most refereeing experience (either the fourth official or the senior assistant referee) will replace the referee.

Extra officials

Assistants beyond those discussed above are generally uncommon. However, extra official roles have been trialled in a few international tournaments.

Fifth official

For matches in the 2006 World Cup, FIFA assigned five officials. The role of the fifth official is to assist the fourth official in a variety of tasks, and potentially be called upon to replace another match official if necessary, for example in the case of injury.[3] If an assistant referee could not carry on his duties, the fifth official was to be the primary replacement, whereas the fourth official was the referee's primary replacement.[4] This distinction was made to reflect the fact that assistant referees and referees perform different tasks.[4]

The fifth official had access to television coverage of the match, but was not permitted to advise the on field referees of any incidents they had missed.[5] Speaking after the 2006 FIFA World Cup Final, Italy coach Marcello Lippi claimed that the referee had sent off France player Zinedine Zidane after receiving advice from "the fourth and fifth officials looking at the video at the edge of the pitch".[6] These claims were subsequently denied by FIFA.[5]

Additional assistant referee

Recent trials, for example at the 2009–10 UEFA Europa League group stage, have been started to make place for an additional two assistant referees to be added to the game, positioned behind the goal lines, to "ensure that the Laws of the Game are upheld, informing the referee of incidents of any kind that he may otherwise have missed, particularly in key areas of the field like the penalty area and its surroundings," but only informing the referee of their observings through a wireless communication system. Their positioning gives a good view to assist the referee in "ghost goal"-type incidents. The trial was evaluated by IFAB technical experts.[7]

This trial was later extended to the 2011–12 UEFA Champions League and qualifying games and the final tournament for the UEFA Euro 2012. Their reception has been mixed.[8] Following a two-year experiment in the UEFA Champions League, Europa League and EURO 2012, as well as the AFC President's Cup and competitions in Brazil, France, Italy, Morocco and Qatar, the use of additional assistant referees was approved by the International Football Association Board (IFAB) in July 2012.[9] Additional assistant referees were used in the 2013 Scottish Cup Final, the first time they had been utilised in a domestic match in Scottish football.[10]


  1. ^ Refereeing & Disciplinary – The Fourth Official: the Scottish Football Association website. Retrieved on 28 February 2008.
  2. ^ Zidane banned and fined for Materazzi headbutt – FIFA World Cup – ESPN Soccernet
  3. ^ Definition of the fifth official: PDF file (page 8) quoting the "IFAB Agenda 2007". Retrieved on 14 May 2012.
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