The Stack Pass is a fundamental pressure passing technique that uses vertical pressure and weight distribution to break through the closed guard. By driving the opponent’s knees toward their chest and stacking their hips over their shoulders, you create a mechanical disadvantage that makes guard retention extremely difficult. The stacking action inverts the bottom player’s spine, shifting their weight onto their upper back and shoulders, which severely compromises their ability to generate hip movement for shrimping, framing, or recomposing guard.
This pass is particularly effective against opponents who rely on active hip movement for guard retention, as the stacking pressure pins their hips in an elevated position that negates their primary defensive tools. The technique requires excellent base, timing, and the ability to maintain heavy top pressure while navigating past the legs. A critical element is head position awareness, as the forward drive exposes the passer to guillotine choke attempts that must be preemptively addressed through proper chin tuck and lateral head placement.
When executed properly, the Stack Pass transitions seamlessly into dominant side control or mount positions. It serves as both a standalone technique and a pressure tool within larger passing systems, forcing defensive reactions that open complementary passes like knee slice, toreando, and leg drag. The stack pass remains one of the highest-percentage pressure passes at all competitive levels due to the overwhelming mechanical advantage it creates.
From Position: Closed Guard (Top) Success Rate: 62%
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Side Control | 62% |
| Failure | Closed Guard | 23% |
| Counter | Closed Guard | 15% |
Attacker vs Defender
| Attacker | Defender | |
|---|---|---|
| Focus | Execute technique | Prevent or counter |
| Key Principles | Drive opponent’s knees toward their chest to invert their sp… | Prevent the guard break entirely through active ankle lock m… |
| Options | 8 execution steps | 4 defensive options |
Playing as Attacker
Key Principles
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Drive opponent’s knees toward their chest to invert their spine and eliminate hip mobility
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Maintain vertical pressure through their center line, not horizontal pushing
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Control both legs together to prevent individual leg pummeling or guard recovery
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Use opponent’s defensive turning reactions to choose the optimal passing direction
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Keep hips low and base wide throughout the pass for stability against sweeps
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Thread the knee through decisively once the hips are fully stacked and controlled
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Transition smoothly to side control without releasing pressure or creating space
Execution Steps
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Establish bilateral grips: From standing or combat base inside the closed guard, secure grips on both of the opponent’s pants a…
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Break the guard open: Using your grips combined with postural pressure, work to open the closed guard. Stand up in base if…
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Drive knees toward opponent’s chest: Step forward with both feet and use your grips to drive the opponent’s knees toward their chest. Tra…
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Stack the hips fully: Continue driving forward until the opponent’s hips lift completely off the mat and their weight shif…
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Consolidate leg control: Pinch both of the opponent’s legs together using your arms, chest, or shoulder pressure. This consol…
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Read defensive reaction and choose passing direction: Observe which direction the opponent turns their knees or hips as they attempt to escape the stack. …
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Thread knee and clear the legs: Slide your lead knee through the gap between the opponent’s legs and your body on the chosen side. U…
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Secure side control: Once your hips clear past their legs completely, immediately drop your weight onto their torso and e…
Common Mistakes
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Standing too upright during the stack, reducing downward pressure
- Consequence: Opponent can easily shrimp away or recover guard as there is insufficient weight keeping them compressed and flat
- Correction: Keep your chest low and positioned directly over their folded knees. Your weight should drive down through their center line toward their shoulders, creating vertical compression rather than horizontal pushing.
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Releasing leg control prematurely before hips fully clear
- Consequence: Opponent recovers guard immediately by reinserting hooks, recomposing frames, or re-closing their legs around your waist
- Correction: Maintain control of at least one leg until your hips have fully cleared past theirs and you have established crossface and underhook grips in side control.
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Keeping a narrow base with feet too close together during the pass
- Consequence: Opponent can sweep you laterally or generate enough hip movement to escape the stacking pressure entirely
- Correction: Keep feet wide and knees slightly bent throughout the pass. Your base should be stable enough that pushing or bridging from underneath has minimal effect on your balance.
Playing as Defender
Key Principles
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Prevent the guard break entirely through active ankle lock maintenance and grip fighting to deny initial stacking opportunity
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Create angles with hip movement before the stack compresses your spine - shrimping early is exponentially more effective than shrimping late
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Threaten offensive counters like guillotine and triangle to force the passer to address defensive concerns rather than continuing the stack
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Never allow your hips to be driven past the tipping point where your weight transfers fully onto your shoulders
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Use frames on the passer’s hips and shoulders to create distance and redirect their forward drive off your center line
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If fully stacked, use inversion and granby rolls to create scrambles rather than fighting the pressure statically
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Control at least one of the passer’s arms or collar to limit their ability to consolidate leg control for the pass
Recognition Cues
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Opponent secures bilateral grips on your pants at the knees or behind your calves while maintaining upright posture inside your guard
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Opponent begins standing up or stepping forward with their weight shifting onto the balls of their feet, driving their hips toward your chest
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You feel your knees being pushed toward your face and your hips beginning to lift off the mat as forward pressure increases
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Opponent’s head drops to one side below your chest line with chin tucked, indicating they are preparing for the forward drive while defending against guillotine
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Your ability to generate hip movement decreases as the passer’s chest settles over your folded legs and compresses your frame
Defensive Options
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Frame on the passer’s hips with both hands and shrimp your hips away to create distance before the stack is established - When: Early in the stack attempt when you first feel forward pressure and your hips have not yet left the mat
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Secure a guillotine grip around the passer’s neck as they drive forward, threatening the choke to halt their advance - When: When the passer drives forward with their head positioned in your centerline or transitions between head positions during the stack
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Shoot for a triangle choke by controlling one of the passer’s arms and cutting an angle with your hips to lock the triangle from the stacked position - When: When the passer has one arm inside your guard and one outside, creating the arm isolation needed for the triangle entry
Position Integration
The stack pass occupies a central position within pressure passing systems and integrates seamlessly into comprehensive guard passing strategies at all competitive levels. It serves dual purposes: as a high-percentage standalone pass and as a pressure tool that forces specific defensive reactions opening complementary passing lanes. When opponents defend the stack by widening their knees, knee slice and leg drag entries become available. When they defend by turning laterally, toreando and bullfighter passes open on the opposite side. This reaction-forcing quality makes the stack pass particularly valuable as a chain-passing initiator. Within the positional hierarchy, it transitions directly from neutral guard positions into dominant top positions like side control or mount, and pairs naturally with double under passes, over-under passes, and smash passes that share the same forward-pressure philosophy. The technique remains effective from white belt through black belt competition and forms a foundational skill for understanding all pressure-based guard passing mechanics.