Professional wrestling
Knockout

Some wrestling performances are presented as resulting in a knockout, mirroring legitimate martial arts and concluding with a technical knockout or technical submission. To determine if a wrestler has passed out in WWE, the referee usually picks up and drops his hand. If it drops to the mat or floor one or three consecutive times without the wrestler having the strength to hold it up, the wrestler is considered to have passed out.

A performer can also be presented as winning by technical knockout even if he does not resort to submission holds, but still beats the opponent to the point of unconsciousness or to the impossibility to defend himself. To check for a technical knockout in this manner a referee would wave his hand in front of the wrestler's face and, if this produces no reaction of any kind, the referee would award the victory to the other wrestler.

A wrestler can also request a ten-count from the referee when, under the event's fictional premise, they think an opponent is sufficiently incapacitated to not be able to stand before the count of ten. Except in traditional European promotions where following down on a fallen opponent was prohibited, these knockouts are rarely used or mentioned as logically it makes more sense for a wrestler to actively pin an opponent for three seconds rather than leaving an opponent the chance to stand up before ten. In such European promotions, countouts as described below are treated as a variant of a knockout.
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