Collar tie
Encyclopedia
Collar tie is a grappling
Grappling
Grappling refers to techniques, maneuvers, and counters applied to an opponent in order to gain a physical advantage, such as improving relative position, escaping, submitting, or injury to the opponent. Grappling is a general term that covers techniques used in many disciplines, styles and martial...

 clinch hold that is used to control the opponent. It is performed from the front of the opponent by grabbing the opponent by the collar, behind the neck, or behind the trapezius muscle
Trapezius muscle
In human anatomy, the trapezius is a large superficial muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula...

. A collar tie using one hand is called a single collar tie, and a collar tie with both hands is called a double collar tie.
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