The Kimura from Diamond Guard exploits the unique grip architecture of the diamond frame to transition from overhook-based control into a powerful Kimura figure-four attack. The bottom player already possesses one of the most critical prerequisites for a Kimura: a deep overhook controlling the opponent’s arm across their body. By releasing head control and securing the opponent’s wrist with the freed hand, the bottom player converts the existing overhook into a figure-four shoulder lock configuration without ever losing arm control during the transition.
This technique functions primarily as a positional control tool and sweep mechanism rather than an immediate submission finish from bottom. The broken posture established by the diamond frame combined with the Kimura grip creates a powerful lever for hip bump-style sweeps that displace the opponent’s base. The opponent, already compromised by the diamond frame’s posture break, finds it exceptionally difficult to resist the combined forces of the Kimura pull and hip drive, typically resulting in the attacker achieving Kimura Trap top position.
The Kimura from Diamond Guard occupies a critical junction in the diamond guard attacking system. When opponents defend triangle entries by keeping elbows tight and resist omoplata entries by controlling their posture angle, the Kimura attack specifically punishes these defensive postures by targeting the arm already trapped in the overhook. This creates a complete three-way offensive cycle where every defensive choice within diamond guard opens a different attack pathway, embodying the dilemma-based approach central to effective closed guard play.
From Position: Diamond Guard (Bottom) Success Rate: 45%
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Kimura Trap | 45% |
| Failure | Diamond Guard | 35% |
| Counter | Closed Guard | 20% |
Attacker vs Defender
| Attacker | Defender | |
|---|---|---|
| Focus | Execute technique | Prevent or counter |
| Key Principles | Never release the overhook during the entire grip transition… | React immediately to head control release — this is your pri… |
| Options | 8 execution steps | 4 defensive options |
Playing as Attacker
Key Principles
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Never release the overhook during the entire grip transition — it is your constant anchor that prevents arm escape
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The head control release is the moment of highest vulnerability — minimize the transition window by having a direct path to the wrist
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Sweep first, submit second — attempting to finish the Kimura from bottom against a defending opponent is low percentage
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The Kimura grip amplifies the sweeping power of a hip bump by eliminating the opponent’s ability to post their trapped arm
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Maintain closed guard until the Kimura grip is fully locked to prevent the opponent from creating distance during transition
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Use the angle created by hip escape to load sweeping power — a flat back generates no sweep momentum
Execution Steps
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Verify Diamond Frame Integrity: Confirm your overhook is deep past the opponent’s tricep with your elbow pulled tight to your ribs, …
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Release Head Control to Target Wrist: Release your head control grip from behind the opponent’s neck and immediately reach for their wrist…
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Secure Wrist Grip on Trapped Arm: Grip the opponent’s wrist firmly using the hand that was controlling their head, establishing a stro…
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Thread Figure-Four Configuration: Slide your overhook arm deeper under the opponent’s tricep until your hand can reach and grip your o…
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Create Angle with Hip Escape: With the Kimura grip locked, open your guard and hip escape slightly toward the overhook side, shift…
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Load Hips for Sweep: From the angled position with your outside foot planted, begin loading your hips for the sweep by en…
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Execute Hip Bump Sweep: Drive explosively through your planted foot and bridge your hips into the opponent while rotating th…
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Consolidate Kimura Trap Top Position: As you arrive on top, immediately establish heavy chest pressure on the opponent’s torso while keepi…
Common Mistakes
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Releasing the overhook before the wrist-controlling hand has secured a firm grip on the opponent’s wrist
- Consequence: The opponent’s arm is momentarily free from both controls, allowing them to retract the arm to safety, recover posture, and escape the diamond frame entirely
- Correction: Always maintain the overhook as a constant anchor throughout the transition. Only begin threading the figure-four after the wrist grip is locked — the overhook stays until the figure-four replaces it as the primary arm control
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Locking the Kimura grip shallow near the opponent’s wrist rather than deep near the elbow
- Consequence: Shallow grip provides weak control and minimal leverage for both the sweep and submission, allowing the opponent to straighten their arm and extract it from the figure-four
- Correction: Thread your overhook arm deep under the opponent’s tricep until your hand reaches past their elbow before gripping your own wrist. The figure-four should sit snug against the proximal end of the forearm for maximum mechanical advantage
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Opening guard before the Kimura figure-four grip is fully locked and secured
- Consequence: Opening guard without the Kimura locked creates separation that the opponent exploits to recover posture, stand up, or begin guard passing sequences while your only remaining control is a partial grip
- Correction: Keep guard closed throughout the entire grip transition phase. Only open guard after the figure-four is fully locked and you are ready to create the sweeping angle — the closed guard maintains proximity during the vulnerable transition window
Playing as Defender
Key Principles
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React immediately to head control release — this is your primary escape window before the Kimura grip locks
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Prioritize arm extraction over posture recovery during the initial transition moment
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If the grip locks, defend the sweep rather than the submission — they will try to sweep first and finish from top
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Widen your base and lower your center of gravity the moment you feel the figure-four configuration forming
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Use your free hand to post and maintain base rather than fighting the grip directly
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Keep your trapped elbow pinched tight to your ribs to deny figure-four depth and reduce both sweep and submission leverage
Recognition Cues
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Bottom player releases their head control grip from behind your neck — their hand moves away from your head toward your trapped arm
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You feel a new grip on your wrist or forearm on the overhook side where previously only the overhook existed
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The bottom player’s body shifts and begins creating an angle by hip escaping to one side rather than pulling you straight down
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You feel a figure-four configuration forming under your arm as the overhook hand connects with the wrist-controlling hand
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The bottom player’s guard opens slightly as they prepare to plant a foot for the sweeping motion
Defensive Options
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Immediate arm retraction during head control release window - When: The instant you feel head control release from behind your neck — before the wrist grip is established
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Drive hips forward and recover posture explosively - When: During the head control release window when the diamond frame is temporarily weakened by the loss of one control point
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Grab own belt, lapel, or opposite wrist to block arm rotation - When: When the Kimura figure-four is locked but the sweep has not yet been initiated — you have seconds to establish the defensive grip
Position Integration
The Kimura from Diamond Guard integrates into the broader diamond guard offensive system as the third major attack option alongside triangle and omoplata entries. It specifically punishes opponents who defend the triangle by keeping their elbows tight and who resist the omoplata by maintaining forward posture — the exact defensive postures that expose the trapped arm to Kimura attack. This creates a complete three-way dilemma system within diamond guard that forces opponents into progressively worse positions regardless of their defensive choices. The technique also connects diamond guard to the Kimura Trap system, opening an entirely new chain of sweeps, back takes, and submissions available from the Kimura grip once top position is achieved.