Keylock

Keylock is the wrestling-derived name for the americana — the figure-four shoulder rotation submission in which the attacker’s grip on the opponent’s wrist is reinforced by a wrap around the opponent’s arm, loading the shoulder against its external rotation.

Etymology. “Keylock” is the standard catch-wrestling and folkstyle term for the figure-four shoulder lock. The name describes the visual shape of the locked grip: the attacker’s wrist-and-arm configuration resembles a key turning a lock, with the opponent’s bent arm forming the keyhole. The term entered no-gi submission grappling through the catch-wrestling lineage and predominates in pro-wrestling and older sambo instructional vocabulary. BJJ and English-speaking no-gi standardised on “americana” for the same configuration, but “keylock” remains the term of choice among wrestlers and catch practitioners.

Mechanics. The submission isolates the shoulder by trapping the opponent’s wrist with a figure-four grip and rotating the arm outward — past the natural range of external rotation in the glenohumeral joint. The configuration requires the opponent’s arm to be pinned with the elbow at roughly 90 degrees and the wrist drawn down toward the mat above the head.

Cross-reference. BJJ uses “americana”; judo uses ude garami (outside variant). Full mechanical coverage on Americana.