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Monoplata from Mount

SubmissionShoulder lockBelt: blue+Risk: moderateIBJJFADCCNo-GiSub-OnlyMMA

The monoplata from mount is a shoulder lock submission that leverages your leg to isolate and attack the opponent’s far arm. It offers a powerful, high-control finish that transitions smoothly from failed armbar or americana attempts, making it a valuable option for mount specialists.

Start
Mount
End
Submission
Prerequisites: Americana setup · S-mount transition · Cross-face control · Posting for base

Steps

  1. 1
    Isolate the Far Arm
    From a stable mount, use a cross-face grip with your right arm and thread your left arm under their far arm, establishing a deep underhook with your left hand gripping their wrist or triceps.
  2. 2
    Thread Your Knee High
    Slide your left knee up, aiming to bring it above their far shoulder, with your shin parallel to their spine and your foot posted on the mat for base.
  3. 3
    Feed the Arm Across
    Use your left hand to pull their far arm across their body, pinning their wrist or elbow against your thigh; maintain chest pressure to keep their shoulders flat.
  4. 4
    Swing Your Leg Over
    Bring your right leg over their head, tucking your foot under their neck or shoulder, while keeping your left knee pinched tightly above their arm.
  5. 5
    Lock the Position
    Clamp your knees together, trapping their far arm between your left thigh and torso; your right foot should be active, toes flexed for base.
  6. 6
    Control the Wrist
    With your left hand, secure a C-grip on their wrist or a figure-four grip if possible, keeping their elbow pointed up and their palm facing their own head.
  7. 7
    Apply the Shoulder Lock
    Raise your hips while driving your left knee down and pulling their wrist toward their head; the submission is generated by forcing internal rotation of the shoulder with your thigh as the fulcrum.
  8. 8
    Finish and Adjust
    If needed, adjust your right leg’s position to increase downward pressure or switch to a triangle finish if they defend the monoplata.

Key details most people miss

  • The effectiveness depends on pinning their far shoulder flat—if their shoulder lifts, the lock weakens.
  • Your left knee must be above their shoulder line, not just their arm, to prevent them turning in.
  • Keep your hips heavy and slightly angled toward their head to maximize shoulder isolation.
  • Flex your right foot and post it wide to prevent being rolled during the finish.

Common mistakes

  • Allowing their far shoulder to turn in—this lets them rotate out and escape.
  • Leaving space between your thigh and their triceps—this gives them room to pull the arm free.
  • Failing to control their wrist—without wrist control, the shoulder lock loses leverage.
  • Not posting your foot for base—this makes you vulnerable to being rolled to your back.

Counters & responses

They try: Opponent bridges and rolls toward your posted leg
You do: Widen your base by posting your right foot further out and drive your head forward to counterbalance.
They try: Opponent straightens their arm to slip out
You do: Switch to a triangle or armbar by feeding their arm deeper and locking your legs.
They try: Opponent frames against your hip to create space
You do: Collapse their frame by dropping your chest and windshield-wipering your knee to re-isolate the arm.
They try: Opponent grabs their own belt or gi to defend
You do: Peel their grip using your free hand or knee, or transition to an americana on the near side.

Drill prescription

5 rounds × 3 minutes; 50% resistance; each partner attempts 5 monoplata finishes per round, tracking successful submissions and escapes. Goal: 4 clean finishes per round without losing mount.

How the masters teach it

Videos are still being curated for this technique. AI suggests these instructors:
Lachlan Giles — Emphasizes the monoplata as a high-percentage mount attack in no-gi, with detailed shoulder isolation mechanics.Roger Gracie — Integrates the monoplata seamlessly with classic mount attacks, focusing on heavy pressure and control.Keenan Cornelius — Innovates with leg positioning and transitions to triangle finishes, especially in gi and no-gi hybrid systems.Marcelo Garcia — Utilizes the monoplata as a counter to common mount escapes, prioritizing tightness and rapid transitions.
#mount#shoulder-lock#submission#gi#no-gi#medium-risk#long-limbed#top-control#transition-attack#competition