Also known as: Barataplata · Barata Lock · Rafael Freire Lock
A shoulder lock from the omoplata family where your ARM substitutes for the omoplata leg: trap their bent arm against your thigh and rotate the shoulder — hittable from mount when they defend the armbar.
Submission · Shoulder Lock · Gi & No-gi · Difficulty 4/5 · Usually learned at Purple belt
Starts from Mount as the mounted player (top) → ends the match (submission).
The details that make it work
Appears when they lock hands to defend your mounted armbar: their bent arm is the raw material.
Thread your arm through their elbow crook and lock your hands around your own shin/thigh, framing their forearm.
Finish by rotating toward their legs — an omoplata’s motion, produced by your arm-and-leg frame.
Where it goes wrong
Pulling the trapped arm straight (that is the armbar you just left) instead of keeping it bent and rotating.
How opponents counter it
Straighten the arm and re-lock the defensive grip
Roll toward the rotation to relieve the shoulder
Is the Baratoplata legal in competition?
Legal in all major rulesets at all levels (IBJJF, ADCC, sub-only). Rules change — always confirm against the current official rulebook for your event.
History & naming
Created and named by Rafael "Barata" Freire in the 2010s.