The referee is allowed to caution or send off a player or substitute after a match has ended. In most leagues, the resulting consequences (i.e. sitting out future matches) will be the same.
Even if a card is not shown, say a referee is approached in the parking lot, the behavior will still be included the game report and the consequences would still be the same. Showing the card is merely a method of communicating. The referee's failure to do so does not absolve the player from the consequences of their actions.
Under the FIFA Laws of the Game, there is no requirement for a cautioned player to leave the field.
A goal keeper may be cautioned just like any other player.
A yellow card is shown to a player or substitute who is being cautioned and is basically a formal warning. If a player or substitute is cautioned twice in the same match, they are sent off which is indicated by showing them a red card.
A player or substitute who is "booked" is being punished for misconduct; either a caution or a send off. A player or substitute who is "cautioned" is being warned. It is one type of misconduct. When a player is cautioned, they are shown a yellow card.
The FIFA Laws of the Game do not put any restrictions on the participation of a cautioned player or substitute. They do require that a sent off player or substitute not participate in the current match.
FIFA rules do not dictate a caution for this offense. The player should be sent off the field until the equipment is corrected and the player must wait until the next stoppage to re-enter the field. NFHS (High School) rules dictate that the coach should be cautioned for the first offense in a match and the offending player cautioned on each subsequent offense for that team.
No. Once this extra player is discovered, he/she will be cautioned (for entering the field of play without the referee's permission) and required to leave the field. Any goals scored during this time could result in the match result being invalidated and, possibly, the match replayed.
Not illegal as such, but you will be cautioned by the referee
A player cannot accumulate five cautions in the same match unless the referee is making a series of grave errors. Once a player has been cautioned for the second time in the same match, that player must be sent off and shown the red card. If a player accumulates five cautions in the same season, some leagues impose suspensions and fines, but this is not standard worldwide.
If a player receives a caution and is shown the yellow card for the second time in the same match, that player must be sent off and also shown the red card. However, there have been cases of referee error when the send-off did not occur as required, and so the player was permitted, incorrectly, to continue play.
Match Mates ended in 1982.
I means that Comerford was cautioned and shown the yellow card, and the player being described was also cautioned immediately or shortly thereafter. The referee generally has a notebook to keep the official record of goals scored, sanctions issued, and substitutions made. As such, a player who is cautioned and shown the yellow card is often said to have been "booked", or in the case of this question, Comerford was "put into the referee's notebook", followed by the player described.