CLOCK CHOKE

The clock choke is the gi-specific blood choke executed against a turtled opponent in which the attacker walks around the opponent's body in a clockwise direction while pulling the opponent's collar across their neck. The name comes from the attacker's circular walking motion, which resembles the hands of a clock. The technique is one of the canonical attacks against turtle in gi competition and has decided countless IBJJF matches at every belt level.

The mechanics begin when the bottom player is in turtle and the attacker has access to one of the opponent's collars from above. The attacker reaches under the opponent's chin to grip the far-side collar with palm down, then walks the body in a clockwise direction (relative to the bottom player) while pulling the collar across the opponent's neck. The walking motion tightens the choke around the carotid arteries with each step, and the bottom player typically taps within five to ten seconds once the grip is established.

The clock choke's structural advantage is that it works without requiring the bottom player to be flat — turtle position itself, which most beginners treat as a safe defensive shell, is in fact vulnerable to the clock choke once the collar grip is captured. Roger Gracie used the clock choke as a primary IBJJF finish against turtled opponents throughout his competitive career, and the technique remains a fixture of every gi competition program. Defensively the bottom player counters by hand-fighting to prevent the deep collar grip, by rolling out of turtle to the choking-arm side before the walk begins, or by tucking the chin tightly to delay the carotid compression.