Question: When can a player be substituted in soccer?

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question: When exactly in the course of a game can a player be substituted in soccer?
short_answers: during a stoppage in play and with the permission of the referee
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question: In most matches, when can a player be substituted in soccer in terms of frequency?
short_answers: three substitutions during a game and a fourth substitute during extra time

Answer: In soccer, most games only allow each team to make a maximum of three substitutions during a game and a fourth substitute during extra time, although the rules are more relaxed during less official games. A player can only be substituted during a stoppage in play and with the permission of the referee. If a player was given a red card during the match and is forced to leave the field, the team cannot make a substitution for that player and must work the remaining players on the field.