The most common reason for awarding an ace is when the served ball lands in-bounds on the opponent’s court and is not touched by any of the receiving players. It’s also considered an ace if the ball is touched by a receiver and then passed to a teammate, who is unable to keep it in play. If the receiver mishandles the served ball, such as committing a double hit, the official will declare a service ace. An ace can also be the result of the receiving team being out of rotation, such as an overlap violation,
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