What are the three simultaneous pressure vectors used in the re-flatten sequence?

The three pressure vectors are crossface pressure driving the opponent's head offline, whizzer torque pulling their underhook shoulder toward the mat, and hip drive generating forward and downward force through body weight. All three must work in coordination to overcome the opponent's structural resistance and collapse their kneeling posture systematically.

Your opponent has a shallow underhook and their outside posting leg is narrow - when should you initiate the re-flatten?

This is the ideal moment to initiate the re-flatten because both structural supports are compromised simultaneously. The shallow underhook means your whizzer will have maximum leverage advantage, and the narrow posting leg means less lateral base to resist your driving pressure. Attack immediately before the opponent can deepen their underhook or widen their base to restore structural integrity.

What is the most critical body position element that determines whether the re-flatten succeeds or fails?

The crossface is the most critical element because it controls the opponent's head position, which dictates their ability to maintain forward pressure and structural integrity through the underhook. Without an effective crossface, the opponent can maintain their head position and forward drive, making the whizzer and hip pressure alone insufficient to collapse their posture.

How should you adjust your re-flatten attempt when the opponent drops their level to enter deep half guard?

When the opponent drops for deep half, maintain tight chest-to-chest connection and follow their downward movement rather than continuing to drive forward into empty space. Use your whizzer arm to block them from threading underneath your hips, and sprawl your hips slightly to increase downward pressure on their shoulders. If they complete the deep half entry, transition to deep half passing rather than forcing the re-flatten.

What grip positioning on the whizzer arm maximizes your torque for the re-flatten?

The whizzer should grip at or above the opponent's elbow on their underhook arm, with your arm threaded deeply over their arm and pulled tight against your ribs. This positioning creates the longest possible lever arm for generating rotational torque. A whizzer that only controls the wrist or forearm provides insufficient leverage to redirect the opponent's underhook force and break their structural integrity.

Your opponent uses your forward driving pressure to initiate a sweep by redirecting your momentum laterally - what fundamental error caused this?

The error was overcommitting weight forward beyond your center of balance without maintaining adequate base through your posted free leg. Effective re-flattening requires controlled incremental pressure where your center of gravity stays over your knees, not projected past them. The correction is to widen your free leg base, apply pressure through hip weight transfer rather than forward lunging, and maintain the ability to retract if the opponent redirects your force.

Re-flatten from Dogfight Attacker | BJJ Technique Guide

As the top player in the dogfight, your primary objective with the re-flatten is to systematically dismantle the bottom player’s elevated posture and return them to a flattened half guard where your passing options multiply. The technique requires winning three simultaneous battles: the head position fight through crossface placement, the underhook contest through whizzer torque, and the base war through directed hip pressure. Success depends not on explosive power but on methodical application of overlapping pressures that progressively compromise the bottom player’s structural integrity. The re-flatten is most effective when the bottom player’s underhook is shallow or their posting points are compromised, making timing and recognition of opportunity windows essential skills for consistent execution.

From Position: Dogfight Position (Top)

Key Attacking Principles

What are the key principles for executing Re-flatten from Dogfight?

Win the head position battle first by driving your crossface shoulder across the opponent’s jaw line, forcing their head offline and disrupting their forward pressure vector
Use the whizzer not as a static grip but as an active torque tool that redirects the opponent’s underhook force away from your body and toward the mat
Time your hip drive to coincide with the moment the opponent’s posting points are most compromised, typically when they are adjusting their base or defending your crossface
Maintain constant connection between your chest and the opponent’s upper body throughout the sequence to prevent them from re-establishing distance and rebuilding their posture
Control the pace of engagement by applying incremental pressure rather than explosive lunges that create opportunities for the opponent to redirect your momentum
Keep your trapped leg heavy and your free leg posted wide for base, ensuring the opponent cannot use your forward momentum against you for sweeps

Prerequisites

What do you need before attempting Re-flatten from Dogfight?

Established whizzer or overhook control on the bottom player’s underhook arm with grip at or above the elbow
Head position at or below the opponent’s shoulder level with ability to drive crossface pressure across their jaw
Trapped leg maintaining connection through the half guard entanglement without excessive slack that allows disengagement
Free leg posted with foot on the mat providing base and driving power for the hip pressure phase
Bottom player has not yet secured deep back control or initiated an irreversible sweep sequence

Execution Steps

How do you execute Re-flatten from Dogfight step by step?

Secure whizzer control: Establish a deep whizzer by threading your arm over the opponent’s underhook arm and gripping at or above their elbow. Pull the whizzer tight against your body to limit the depth and power of their underhook, creating the primary control mechanism for redirecting their upper body.
Drive crossface pressure: Place your shoulder or forearm across the opponent’s jaw and neck, driving their head away from your body and offline from their forward pressure direction. The crossface disrupts their ability to maintain upright posture and converts their forward drive into lateral instability.
Lower your level: Drop your hips and center of gravity while maintaining chest contact with the opponent’s upper body. This level change shifts your weight vector from horizontal to diagonal, creating downward pressure that challenges the opponent’s ability to remain elevated on their knees.
Apply whizzer torque: Rotate your whizzer arm in a circular motion toward the mat, pulling the opponent’s underhook shoulder downward and toward the ground. This torque removes the structural support of the underhook and creates a rotational force that the opponent must resist or collapse under.
Drive hips forward and down: Commit your hip pressure forward and downward into the opponent’s chest and shoulder while maintaining your crossface and whizzer controls. Use your posted free leg to generate driving force, transferring your body weight through your hips into the opponent’s compromised structure.
Collapse posting points: Target the opponent’s outside posting leg by angling your pressure to push their weight past their base. As their posting leg buckles or slides, their entire kneeling structure collapses and they begin falling backward toward the mat from the dogfight position.
Follow to half guard top: As the opponent flattens to the mat, immediately drive your chest onto their chest and establish heavy shoulder pressure through the crossface. Settle your hips low and wide to maximize weight distribution, transitioning from the flattening sequence into established half guard top control.
Consolidate position: Once the opponent is flat, maintain crossface and begin working toward your preferred passing grip configuration. Control their bottom knee with your hand or shin to prevent them from re-inserting a knee shield or elevating back to dogfight posture before you initiate your pass.

Possible Outcomes

Result	Position	Probability
Success	Half Guard	55%
Failure	Dogfight Position	30%
Counter	Half Guard	15%

Opponent Counters

How might your opponent counter Re-flatten from Dogfight?

Opponent deepens underhook and drives forward explosively before crossface is established (Effectiveness: High) - Your Response: If the underhook is too deep for effective whizzer control, switch to sprawling your hips back momentarily to create separation, then reset with renewed crossface pressure from a wider angle → Leads to Dogfight Position
Opponent drops level and enters deep half guard to avoid the flattening pressure (Effectiveness: Medium) - Your Response: Anticipate the level drop by maintaining tight chest-to-chest connection and following their downward movement, using your whizzer arm to prevent them from threading underneath your hips → Leads to Dogfight Position
Opponent redirects the forward driving pressure into a sweep by channeling your momentum laterally (Effectiveness: High) - Your Response: Maintain wide base with your free leg and avoid overcommitting weight forward beyond your balance point, keeping your center of gravity over your knees rather than projecting past them → Leads to Half Guard
Opponent posts their outside hand and circles away from the crossface to maintain base (Effectiveness: Medium) - Your Response: Follow the circling movement by adjusting your crossface angle and using your whizzer to prevent the opponent from completing their rotation, cutting the angle before they re-establish posture → Leads to Dogfight Position

Common Attacking Mistakes

What mistakes should you avoid when executing Re-flatten from Dogfight?

1. Attempting to re-flatten using only arm strength without engaging hip drive and body weight

Consequence: The bottom player easily resists the flattening attempt and maintains dogfight posture, wasting the top player’s energy while the bottom player remains in their offensive position
Correction: Drive the re-flatten primarily with hip pressure and body weight, using arms only for directional control through crossface and whizzer rather than as the primary force generators

2. Neglecting the crossface and focusing solely on the whizzer to flatten the opponent

Consequence: The bottom player maintains head position and forward pressure through their underhook, making the whizzer alone insufficient to collapse their posture and enabling counter-attacks
Correction: Establish the crossface first or simultaneously with the whizzer, as head control disrupts the opponent’s entire structural chain and makes the whizzer torque significantly more effective

3. Lunging forward with excessive momentum that projects weight past the balance point

Consequence: The bottom player redirects the overcommitted momentum for a sweep, using the top player’s forward drive against them to achieve a reversal to half guard top or back take
Correction: Apply pressure incrementally with controlled forward drive, keeping your center of gravity over your base and your free leg posted wide enough to prevent momentum-based counters

4. Releasing the half guard leg trap while focusing on upper body pressure

Consequence: The bottom player extracts their legs and recovers to a stronger guard position such as butterfly guard or closed guard, negating the passing progress entirely
Correction: Maintain constant awareness of the half guard leg entanglement, keeping your trapped leg heavy and pinching your knees together to prevent the bottom player from freeing their legs during the flattening sequence

5. Attempting the re-flatten when the opponent has already secured deep underhook with back exposure

Consequence: The opponent capitalizes on the delayed response by completing a back take or sweep before the re-flatten pressure can take effect, resulting in significant positional loss
Correction: Recognize when the dogfight has progressed too far for re-flattening and switch to alternative responses such as sprawl to front headlock or preemptive circling to deny the back take angle

6. Failing to follow the opponent to the mat after successfully breaking their posture

Consequence: The bottom player recovers their posture and returns to dogfight position, wasting the successful flattening effort and requiring the entire sequence to be repeated
Correction: Immediately follow the collapsing opponent to the mat with heavy chest pressure and low hips, transitioning directly into established half guard top control without creating any space for recovery

Training Progressions

How do you train Re-flatten from Dogfight (Attacker)?

Phase 1: Mechanics Isolation - Individual pressure components Practice crossface placement, whizzer grip, and hip drive as separate movements from static dogfight position with compliant partner, focusing on proper body mechanics and weight transfer for each element individually

Phase 2: Combined Pressure Chain - Sequencing the three pressure vectors Combine crossface, whizzer torque, and hip drive into a continuous flattening sequence against a partner providing light resistance, developing timing and coordination between the three control mechanisms as a unified system

Phase 3: Reaction-Based Drilling - Reading and countering defensive responses Partner provides realistic resistance including counter-underhook drives, deep half entries, and sweep attempts while you practice adjusting the re-flatten sequence based on their specific defensive reactions and timing

Phase 4: Positional Sparring Integration - Live application from dogfight Start from dogfight position with full resistance, practicing the complete sequence from recognition of re-flatten opportunity through consolidation of half guard top position under competitive conditions

Phase 5: Chain Attack Development - Linking re-flatten with immediate passes Combine the re-flatten with immediate passing attempts upon reaching half guard top, developing automatic transitions to knee slice, crossface pass, or smash pass based on the opponent’s positioning after being flattened

Safety Considerations

What are the safety concerns for Re-flatten from Dogfight?

The re-flatten technique involves significant pressure application to the head and neck through the crossface and forward driving mechanics. During training, modulate crossface pressure to avoid cervical strain and communicate with your partner about neck discomfort. Avoid explosive slamming movements when driving the opponent flat, as the transition from kneeling to supine position can cause impact injuries if performed recklessly. Be mindful of your partner’s knee health when maintaining the half guard leg trap during the flattening sequence, particularly if they resist by posting their trapped leg at extreme angles.

Re-flatten from Dogfight Attacker

Outcomes