#3 Arm-Bar
The arm-bar submission move is synonymous with UFC Hall of Famer and current WWE Raw Women's Champion, Ronda Rousey who has employed the extremely painful submission hold in both promotions.
Nine of Rousey's 12 MMA victories came via arm-bar such was her excellent proficiency in employing the hold.
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Rousey has used it to great effect in WWE as well to defeat Stephanie McMahon at Wrestlemania and Alexa Bliss at Summerslam.
It is the most used submission hold in MMA in 2018 due to it's extremely painful hyperextending of the elbow joint which usually results in an immediate tap out such is the severe discomfort of the hold.
Don't expect this submission to disappear from either combat sport any time soon.