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Substitution (sport)
In team sports, substitution (or interchange) is replacing one player with another during a match. Substitute players that are not in the starting lineup (also known as bench players, backups, interchange, or reserves) reside on the bench and are available to substitute for a starter. Later in the match, that substitute may be substituted for by another substitute or by a starter who is currently on the bench.
Free substitution or rolling substitution is a rule in some sports that allows players to enter and leave the game for other players many times during the course of a game, generally during a time-out or other break in live play; and for coaches to bring in and take out players an unlimited number of times. In other sports, limited substitution restricts the manner in which players can be replaced.
Per IFAB rules, teams are allowed up to three substitutions per game, and players may only be substituted during a stoppage in play. Players who leave the game may not return, and if a team runs out of substitutions and loses a player due to injury or expulsion, they must play the rest of the game short handed. A fourth substitution during extra time was trialed by FIFA during the 2018 FIFA World Cup and 2019 FIFA Women's World Cup. At many amateur levels, unlimited substitution is allowed whenever the ball goes out of play.[citation needed].
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Substitution (sport)
In team sports, substitution (or interchange) is replacing one player with another during a match. Substitute players that are not in the starting lineup (also known as bench players, backups, interchange, or reserves) reside on the bench and are available to substitute for a starter. Later in the match, that substitute may be substituted for by another substitute or by a starter who is currently on the bench.
Free substitution or rolling substitution is a rule in some sports that allows players to enter and leave the game for other players many times during the course of a game, generally during a time-out or other break in live play; and for coaches to bring in and take out players an unlimited number of times. In other sports, limited substitution restricts the manner in which players can be replaced.
Per IFAB rules, teams are allowed up to three substitutions per game, and players may only be substituted during a stoppage in play. Players who leave the game may not return, and if a team runs out of substitutions and loses a player due to injury or expulsion, they must play the rest of the game short handed. A fourth substitution during extra time was trialed by FIFA during the 2018 FIFA World Cup and 2019 FIFA Women's World Cup. At many amateur levels, unlimited substitution is allowed whenever the ball goes out of play.[citation needed].