In the event of an actual or suspected concussion, Qatar 2022 protocol allows fo
r a single additional permanent concussion substitution (APCS). This substitutio
n allows a team to withdraw a player who may have suffered a brain injury but do
es not impact the five permitted substitutions. The opposing team is granted an
additional substitution with each APCS to avoid any advantage.
疑似脑震荡，可以多1个换人名额，而且不包含在5人的换人名额
基于公平，对手也多了1个换人名额
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