SAFETY: Kimura from Quarter Guard targets the Shoulder joint, rotator cuff, and shoulder capsule. Risk: Rotator cuff tear (supraspinatus, infraspinatus, teres minor, subscapularis). Release immediately upon tap.
The Kimura from Quarter Guard exploits a unique positional advantage where the top player has nearly completed their guard pass, creating ideal conditions for the figure-four shoulder lock. Unlike attacking the Kimura from full half guard where the bottom player retains significant defensive capability, the quarter guard position compromises the defender’s ability to maintain frames and creates accessible angles for wrist isolation. The top player’s advanced hip position and crossface pressure naturally funnel the bottom player’s arms into vulnerable configurations, particularly when they reach for underhooks or attempt to frame against the pass.
This submission capitalizes on the bottom player’s defensive urgency. As they fight to retain guard with diminishing control, their near arm becomes exposed through framing attempts or underhook battles. The top player can transition seamlessly from passing pressure to kimura grip, using the same crossface and weight distribution that drives the pass to control the submission setup. The figure-four configuration locks the shoulder in internal rotation while the top player’s body weight prevents escape, creating a high-percentage finish that chains naturally with guard passing sequences.
The Kimura from Quarter Guard is particularly effective because it punishes the bottom player’s primary defensive tool—the underhook. When the defender commits their arm to the underhook seeking sweeps or back takes, they expose the exact wrist and forearm angles needed for the figure-four grip. This creates a tactical dilemma where the bottom player must choose between defending the pass without their strongest tool or risking the submission by fighting for the underhook.
Category: Joint Lock Type: Shoulder Lock Target Area: Shoulder joint, rotator cuff, and shoulder capsule Starting Position: Quarter Guard From Position: Quarter Guard (Top) Success Rate: 62%
Safety Guide
Injury Risks:
| Injury | Severity | Recovery Time |
|---|---|---|
| Rotator cuff tear (supraspinatus, infraspinatus, teres minor, subscapularis) | High | 3-9 months with potential surgery requirement |
| Shoulder capsule damage and dislocation | CRITICAL | 6-12 months, may require surgical repair |
| Labral tear (glenoid labrum) | High | 4-8 months, often requires arthroscopic surgery |
| Bicep tendon strain or rupture | Medium | 6-12 weeks for strain, 3-6 months for rupture |
Application Speed: SLOW and progressive - 3-5 seconds minimum in training, allowing partner time to recognize danger and tap
Tap Signals:
- Verbal tap (saying ‘tap’ or making any verbal distress sound)
- Physical hand tap (multiple taps with free hand)
- Physical foot tap (multiple taps with either foot)
- Any distress signal including screaming or unusual sounds
Release Protocol:
- Immediately stop all rotational pressure the instant tap is felt or heard
- Return the arm toward neutral position (externally rotate back to starting position)
- Release the figure-four grip completely
- Allow partner to self-assess shoulder mobility before continuing
- Never release suddenly or allow arm to spring back forcefully
Training Restrictions:
- Never spike or jerk the submission - rotation must be smooth and controlled
- Never use competition speed or surprise attacks in training
- Always ensure partner has at least one hand free to tap
- Do not apply while partner is in awkward body position that prevents tapping
- Never combine with weight pressure that restricts breathing while finishing
- Respect immediate taps without testing partner’s pain tolerance
Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | game-over | 62% |
| Failure | Quarter Guard | 25% |
| Counter | Half Guard | 13% |
Attacker vs Defender
| Attacker | Defender | |
|---|---|---|
| Focus | Execute and finish | Escape and survive |
| Key Principles | Control the wrist before committing to the figure-four—prema… | Recognize the kimura threat early—once the figure-four is fu… |
| Options | 7 execution steps | 4 defensive options |
Playing as Attacker
Key Principles
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Control the wrist before committing to the figure-four—premature grip attempts telegraph your intention and allow preemptive defense
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Maintain crossface pressure throughout the kimura setup to prevent the bottom player from turning into you or creating defensive frames
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Pin the captured elbow tight against your hip to create a fixed fulcrum point, maximizing rotational leverage while minimizing escape angles
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Use your body weight and hip rotation to drive the finish rather than arm strength—the kimura is a whole-body submission, not an arm crank
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Keep your base low and wide during the finishing sequence to resist the bottom player’s bridge and roll escape attempts
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Attack the arm during transitions—the moment the bottom player extends for an underhook or frame is the highest-percentage entry window
Execution Steps
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Identify arm exposure window: From established quarter guard top with crossface pressure, watch for the bottom player’s near arm e…
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Secure wrist control with far hand: Release your far-side hand from hip control and grip the bottom player’s exposed wrist using a C-gri…
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Thread arm for figure-four grip: Slide your crossface-side arm underneath the bottom player’s trapped forearm from the outside, threa…
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Pin the elbow to your hip: Drive the bottom player’s captured elbow tight against your hip bone using the figure-four grip, cre…
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Establish finishing angle: Shift your body weight slightly toward the bottom player’s head while keeping your chest heavy on th…
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Apply controlled rotational pressure: Using hip rotation and body weight rather than arm strength alone, drive the bottom player’s wrist i…
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Complete the finish and release on tap: Continue smooth progressive rotational pressure until the opponent taps. Keep your base wide and wei…
Common Mistakes
-
Releasing crossface to grab the wrist with both hands simultaneously
- Consequence: Opponent turns into you immediately, creates defensive frames, and escapes the quarter guard position entirely
- Correction: Keep crossface shoulder heavy while far hand secures wrist first, then thread the crossface arm for the figure-four while maintaining shoulder pressure through body weight
-
Lifting captured elbow away from body during the rotational finish
- Consequence: Reduces mechanical leverage dramatically and allows the opponent to extract their arm by straightening against the weakened figure-four
- Correction: Keep the captured elbow pinned tightly against your hip bone throughout the entire finishing sequence, using it as the fixed fulcrum point for all rotation
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Pulling the wrist with arm strength instead of using body rotation and weight
- Consequence: Fatigues quickly, gives opponent time to organize defense, and produces inconsistent finishing pressure that experienced defenders can resist
- Correction: Drive the finish through hip rotation and body weight shift, letting your torso movement power the wrist arc rather than muscling with your arms
Playing as Defender
Key Principles
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Recognize the kimura threat early—once the figure-four is fully locked, escape difficulty increases dramatically with each passing second
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Keep elbows tight to your body to deny the wrist exposure needed for the initial C-grip control
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Fight the grip before it locks completely—breaking a partial figure-four is far easier than escaping a completed one
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Use hip rotation toward the attacker to reduce the rotational angle available for the finishing sequence
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Maintain at least one grip break option at all times, keeping your free hand ready to fight the figure-four or anchor your wrist
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Bridge timing is critical—bridge toward the trapped arm before rotation begins, not during the finish when the attacker’s leverage is maximal
Recognition Cues
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Opponent’s far hand releases position control and reaches toward your near wrist or forearm instead of maintaining hip pressure
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Crossface pressure shifts as opponent begins threading their arm under your trapped arm for the figure-four configuration
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Sudden weight shift toward your head combined with your elbow being driven toward the opponent’s hip bone
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Opponent abandons passing momentum and redirects attention specifically to controlling and isolating your near arm
Escape Paths
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Straighten the captured arm powerfully and pull elbow tight to your ribcage, breaking the figure-four configuration before rotation can begin
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Bridge toward the trapped arm side and roll through using momentum to break the grip and recover half guard position
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Turn aggressively into the attacker while pulling the arm free, reducing rotational angle and creating space to recover guard
From Which Positions?
Match Outcome
Successful execution of Kimura from Quarter Guard leads to → Game Over
All submissions in BJJ ultimately converge to the same terminal state: the match ends when your opponent taps.