Answer: alternates

AnswerCrossword Clue
ALTERNATESSubs
ALTERNATESSeconds at political convention.
ALTERNATESCertain delegates.
ALTERNATESCertain jurors
ALTERNATESDisappointed Olympic team members, maybe
alternatesDo or perform in turn repeatedly
alternatesOccur in turn repeatedly
alternatesALTERNATE, to cause to follow by turns or one after the other (properly, of two things)