<Ul> <Li> Association football: A red card is shown by a referee to signify that a player has been sent off . A player who has been sent off is required to leave the field of play immediately and must take no further part in the game . The player who has been sent off cannot be replaced during the game; his team must continue the game with one player fewer . Only players, substitutes and substituted players may receive a red card . If a goalkeeper receives a red card another player will be allowed to assume goalkeeping duties (teams will usually substitute an outfield player for another goalkeeper if this option is available). A red card will be shown to a player who has committed a serious offense such as violent conduct or an illegal and purposeful obstruction of a goal scoring opportunity for the opposing team . A red card will also be shown to a player who accumulates two yellow cards for more minor offenses . </Li> </Ul> <Li> Association football: A red card is shown by a referee to signify that a player has been sent off . A player who has been sent off is required to leave the field of play immediately and must take no further part in the game . The player who has been sent off cannot be replaced during the game; his team must continue the game with one player fewer . Only players, substitutes and substituted players may receive a red card . If a goalkeeper receives a red card another player will be allowed to assume goalkeeping duties (teams will usually substitute an outfield player for another goalkeeper if this option is available). A red card will be shown to a player who has committed a serious offense such as violent conduct or an illegal and purposeful obstruction of a goal scoring opportunity for the opposing team . A red card will also be shown to a player who accumulates two yellow cards for more minor offenses . </Li> <Dl> <Dd> For more details, see Red card (association football). </Dd> </Dl> <Dd> For more details, see Red card (association football). </Dd>

What does yellow card mean in world cup soccer