REAR NAKED CHOKE

The rear naked choke, known in Portuguese as mata leão (lion killer), is the highest-percentage submission in all of combat sports and the canonical finish from back control. It is a blood choke that compresses both carotid arteries simultaneously by drawing the choking arm tight under the opponent's chin while the opposing hand anchors the choke for the squeeze. The strangulation is fast — typically under ten seconds from a fully secured position — and it works on the largest opponents because it bypasses the trachea entirely and targets the cerebral blood supply.

The mechanics start with the choking arm threaded under the opponent's chin from behind. The thumb-side of the wrist crosses the throat and lands in the crook of the opposite arm. The opposing hand grips the bicep of the choking arm and presses down on the back of the opponent's skull, while the elbows squeeze toward one another to close the carotids. The opponent's chin position is what determines how quickly the choke finishes; a tucked chin delays the inevitable, while a high chin gives the choke a clean line and a near-instant tap.

No single submission has produced more title-deciding finishes across BJJ, ADCC, and MMA than the mata leão. Marcelo Garcia's no-gi back-take system was built around it; Gordon Ryan has finished entire major tournaments with it; in MMA every era of champion from Royce Gracie to current title-holders has used it as a primary weapon. Defensively the technique is among the most studied — keep two hands on the choking arm, peel the choking hand away first, never the gripping hand, and turn into the choke arm to escape — but even with perfect defense, a fully connected mata leão against a non-elite defender is a near-certain finish.