The Knee Cut from Headquarters is the highest-percentage guard pass in modern systematic jiu-jitsu, serving as the primary offensive transition from the headquarters hub position. This technique leverages the control advantages inherent in headquarters—trapped leg, upright posture, and triangulated base—to drive the cutting knee diagonally across the opponent’s thigh line, separating their legs and completing the pass to side control. The mechanical foundation relies on three simultaneous actions: knee pressure slicing through the thigh line, crossface or shoulder pressure preventing the opponent from turning into the passer, and a decisive hip drop that collapses remaining defensive structures.
From headquarters specifically, the knee cut benefits from pre-established leg control and a stable base that eliminates many of the setup requirements needed from other starting positions. The passer reads the opponent’s defensive reaction and commits to the knee cut at the moment the opponent turns their hips toward the trapped leg side, which naturally opens the passing lane across the thigh. This integration with the headquarters decision tree makes the knee cut the primary passing option, accounting for approximately 30% of all passing attempts from this position in systematic guard passing methodologies.
The technique’s effectiveness at all levels stems from its direct biomechanical advantage: the passer’s entire body weight channels through the cutting knee, creating a wedge that separates the opponent’s legs regardless of defensive framing. When combined with proper crossface control and hip pressure, the knee cut creates a passing sequence that is mechanically difficult to defend without conceding position elsewhere, forcing the bottom player into reactive choices that open alternative passing lanes if the knee cut itself is blocked.
From Position: Headquarters Position (Top) Success Rate: 55%
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Side Control | 55% |
| Failure | Headquarters Position | 30% |
| Counter | Half Guard | 15% |
Attacker vs Defender
| Attacker | Defender | |
|---|---|---|
| Focus | Execute technique | Prevent or counter |
| Key Principles | Establish upper body control before initiating the cut—cross… | React before the knee crosses your thigh line—early defensiv… |
| Options | 7 execution steps | 4 defensive options |
Playing as Attacker
Key Principles
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Establish upper body control before initiating the cut—crossface or underhook must be secured to prevent the opponent from turning into the pass and countering
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Drive the cutting knee diagonally at forty-five degrees across the opponent’s thigh, not straight down, creating a wedge effect that mechanically separates their legs
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Drop your hip weight through the cut rather than sliding over the top—the hip drop collapses defensive space and prevents half guard recovery
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Read the opponent’s hip angle and initiate the cut when they turn toward the trapped leg side, which naturally opens the passing lane across their thigh
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Maintain downward pressure on the trapped leg throughout the entire pass sequence to prevent the opponent from creating hip movement or recovering guard structure
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Slide the shin through using a windshield-wiper extraction rather than lifting the leg, which would create space for the opponent to re-insert defensive hooks
Execution Steps
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Establish Upper Body Control: From headquarters with the opponent’s leg trapped, secure crossface control by driving your near-sid…
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Read Opponent’s Hip Angle: Observe the direction of the opponent’s hips and identify the optimal passing lane. The ideal moment…
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Angle the Cutting Knee: Drive your trapped-side knee diagonally across the opponent’s inner thigh at approximately forty-fiv…
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Drop Hip Weight Through the Cut: As your knee crosses the opponent’s thigh line, actively drop your hip toward the mat on the passing…
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Slide Shin Through and Clear the Leg: Once your knee has crossed and your hip is dropping, slide your shin across the opponent’s thigh usi…
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Consolidate Crossface and Block Hip: Drive your crossface arm deeper as the pass completes, pinning the opponent’s head firmly away from …
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Settle into Side Control: Complete the transition by establishing perpendicular chest pressure across the opponent’s torso wit…
Common Mistakes
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Initiating the knee cut without establishing crossface or upper body control first
- Consequence: Opponent turns into you freely, secures an underhook, and either recovers half guard or sweeps you during the cutting motion when your base is compromised
- Correction: Always secure crossface or underhook control before driving the knee across the thigh line, ensuring the opponent cannot turn into the pass or establish offensive grips during the transition
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Cutting the knee straight down vertically rather than at a diagonal angle across the thigh
- Consequence: No wedge effect is created, the knee slides off the thigh without separating the legs, and the opponent easily maintains leg entanglement and recovers guard structure
- Correction: Drive the knee at forty-five degrees diagonally across the opponent’s inner thigh, aiming for the mat on their far side to create the wedge that mechanically separates their legs through bodyweight
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Failing to drop the hips during the cutting phase, staying elevated on the knee
- Consequence: Space remains between your hip and the opponent’s body, allowing them to re-insert their knee for half guard recovery or create enough distance to establish defensive frames
- Correction: Actively drop your hip toward the mat as the knee crosses the thigh line, making your hip the heaviest point of contact that collapses all remaining defensive space
Playing as Defender
Key Principles
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React before the knee crosses your thigh line—early defensive intervention is dramatically more effective than late-stage recovery attempts against an established cut
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Maintain hip mobility by staying on your side and continuously creating angles rather than lying flat, which gives the passer direct access to the cutting lane
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Establish knee shield or forearm frames against the passer’s hip and shoulder to create distance that prevents the cutting knee from reaching your thigh line
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Fight for the underhook on the side of the cutting knee, as it provides the primary pathway to sweep attempts and prevents the crossface from being established
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Control the passer’s hip on the cutting side with your near hand to physically block the knee from advancing across your body
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If the knee crosses, immediately lock your legs around the cutting shin to recover half guard rather than allowing complete pass to side control
Recognition Cues
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Passer’s knee begins angling diagonally toward your far-side mat, shifting from vertical headquarters pressure to lateral cutting pressure across your thigh
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Crossface pressure intensifies suddenly as the passer secures upper body control to prevent you from turning into the pass before committing to the cut
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Passer’s weight shifts toward your far side as they commit body mass behind the cutting knee, noticeably changing the pressure distribution from centered to lateral
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Passer’s far hand releases knee control grip and repositions toward your head or far shoulder for crossface or collar control, signaling imminent pass commitment
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Passer’s posting leg adjusts position or drives forward, indicating they are loading their base for the cutting motion and weight transfer across your thigh
Defensive Options
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Insert knee shield before the cut develops by placing your shin across the passer’s hip line and framing on their shoulder with your top hand - When: At the earliest recognition of the knee cut setup, before the passer commits weight to the cutting direction and while their knee is still in headquarters position
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Secure deep underhook on the cutting side and sit up aggressively into the passer’s body, threatening a sweep or back take as they commit weight forward - When: When the passer commits to the knee cut and shifts their weight forward, creating the opportunity to get underneath their center of gravity with the underhook
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Frame on the passer’s hip with your near hand while hip escaping away from the cutting direction to create distance and recover guard structure - When: When the passer’s knee begins crossing but has not yet reached the critical point past your thigh line, and you have enough space to create a hip frame
Position Integration
The Knee Cut from Headquarters occupies the central offensive role in systematic guard passing methodology as the primary transition from the headquarters hub to side control. It connects directly to the most common dominant position achieved through guard passing and serves as the default option when the opponent turns their hips toward the trapped leg. The technique integrates with toreando and leg drag passes to form a three-directional passing system where each option covers defensive responses to the others—if the opponent frames to stop the knee cut, the toreando becomes available; if they underhook to counter the knee cut, the leg drag or backstep opens. Failed knee cut attempts return to headquarters for immediate re-engagement with alternative passes, creating systematic pressure cycles that exhaust defensive options over time.