As the attacker executing the Underhook Sweep from Dogfight, you are the bottom player in a dogfight position who has established a deep underhook and is looking to convert that grip advantage into a complete positional reversal. Your primary task is to use the underhook as a lever to rotate the opponent over their trapped knee while simultaneously removing their far-side posting ability. The sweep requires coordinating three elements: forward pressure through the underhook, far-side base removal with your free hand, and explosive leg drive from your outside posting leg. Timing is critical—the sweep works best when the opponent’s weight is neutral or shifting backward, not when they are driving forward with heavy whizzer pressure. Read the opponent’s weight distribution through tactile feedback in the underhook and initiate the sweep during windows of compromised balance.
From Position: Dogfight Position (Bottom)
Key Attacking Principles
- Depth of underhook determines sweep leverage—a shallow underhook to the near hip provides insufficient rotational force to complete the sweep
- Remove far-side posting ability before initiating the primary drive; sweeping without controlling the far side allows easy defense through posting
- Use leg power through your outside posting leg as the primary force generator, not upper body pulling through the underhook arm
- Angle the driving force diagonally across the opponent’s body rather than straight forward to attack their weakest balance plane
- Commit fully once initiated—half-committed sweeps allow the opponent to recover base and potentially counter with flattening pressure
- Head position drives body direction; keep your head pressed tight against the opponent’s chest or shoulder, driving in the direction of the sweep
Prerequisites
- Deep underhook established with your arm reaching around the opponent’s torso to at minimum their far lat, ideally reaching the far shoulder blade for maximum leverage
- Elevated kneeling posture in dogfight with hips off the mat and weight distributed through both knees and your outside posting leg
- Free hand positioned to control the opponent’s far hip, far knee, or far ankle to prevent posting during the sweep
- Outside leg firmly planted on the mat with the ball of the foot engaged, ready to generate explosive forward and diagonal driving force
- Opponent’s whizzer pressure manageable and not fully collapsing your posture—if the whizzer is overwhelming, address it first before attempting the sweep
Execution Steps
- Verify underhook depth and adjust: Confirm your underhook arm has penetrated deep around the opponent’s torso. Your hand should reach their far lat or shoulder blade. If shallow, re-pummel to deepen the grip before proceeding. A shallow underhook lacks the rotational leverage needed to complete the sweep against resistance.
- Establish far-side control with free hand: Reach your free hand across to control the opponent’s far hip, far knee, or far ankle. The specific target depends on distance—grab whatever far-side anchor is available. This control point is critical as it prevents the opponent from posting their far leg or hand to stop the sweep.
- Load outside posting leg for drive: Position your outside leg with the ball of the foot firmly planted on the mat, knee bent at approximately 90 degrees. This leg serves as your primary force generator. Shift your weight slightly backward to load the leg like a spring before the explosive drive phase.
- Drive head into opponent’s chest and angle body: Press your head firmly into the opponent’s chest or shoulder on the underhook side. Angle your body slightly toward the direction you intend to sweep—diagonally across the opponent’s centerline rather than straight forward. This diagonal angle attacks a weaker balance plane.
- Execute explosive forward-diagonal drive: Simultaneously drive off your outside leg, pull with the underhook, and lift or block the far-side post. The force should travel diagonally through the opponent’s body, rotating them over their trapped knee. Commit maximum explosive power—this is the decisive moment of the sweep.
- Maintain far-side control through the rotation: As the opponent begins to tip, maintain your free hand’s control on their far side throughout the rotation. Releasing the far-side grip prematurely allows them to post and recover even mid-sweep. Keep pulling or lifting their far-side anchor until they are past the tipping point.
- Follow through to top position: Continue driving through the sweep until you land in a dominant top position. Do not stop at the tipping point or pause mid-sweep. Your momentum should carry you into side control or mount depending on how far the rotation travels. Keep your chest connected to the opponent throughout.
- Consolidate top position immediately: Upon landing in the top position, immediately establish crossface control or underhook and drive your weight through your hips into the opponent. Free your inside leg from the half guard entanglement if it remains trapped. Secure dominant grips before the opponent can re-guard or scramble away.
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Side Control | 35% |
| Success | Mount | 20% |
| Failure | Dogfight Position | 30% |
| Counter | Flattened Half Guard | 15% |
Opponent Counters
- Opponent posts far hand wide on the mat to create a tripod base against the sweep direction (Effectiveness: High) - Your Response: Switch immediately to back take as the wide post exposes their far side—circle your underhook to seatbelt grip and drive toward their exposed back rather than continuing the sweep → Leads to Dogfight Position
- Opponent drives forward aggressively with whizzer and crossface to flatten you before the sweep initiates (Effectiveness: High) - Your Response: Redirect their forward momentum into a deep half guard entry by ducking under their pressure, or absorb the drive momentarily and explode into the sweep as their weight shifts forward past their base → Leads to Flattened Half Guard
- Opponent hip switches away from the underhook and circles their hips to neutralize the leverage angle (Effectiveness: Medium) - Your Response: Follow the hip switch with your underhook, maintaining chest-to-chest contact, and re-angle your sweep direction to match their new hip orientation—their movement creates a new off-balance angle to exploit → Leads to Dogfight Position
- Opponent sits back heavily, dropping their weight low to create a wide stable base resistant to forward drives (Effectiveness: Low) - Your Response: Their backward weight shift opens the forward drive sweep—use the space created by their retreat to drive straight forward through their weakened base, or transition to the inside trip variation targeting their now-lightened near leg → Leads to Dogfight Position
Test Your Knowledge
Q1: What is the minimum depth required for the underhook before attempting the sweep, and why does a shallow underhook fail? A: The underhook must reach at minimum the opponent’s far lat, ideally their far shoulder blade. A shallow underhook that only contacts the near hip or ribcage lacks sufficient lever length to generate the rotational force needed to topple the opponent over their trapped knee. The deeper the underhook penetrates, the greater the mechanical advantage and the harder it is for the opponent to strip the grip through whizzer pressure.
Q2: Why must you control the opponent’s far-side hip, knee, or ankle before initiating the drive? A: Far-side control removes the opponent’s primary defense against the sweep—posting their far hand or leg to create a tripod base. Without this control, even a powerful drive is easily stopped by a simple far-side post. Controlling the far side collapses their base from a stable triangle to an unstable line, making the diagonal drive effective with significantly less force required.
Q3: Your opponent defends the underhook sweep by posting their far hand wide on the mat. How do you respond? A: The wide far-hand post exposes their far side and creates an immediate back take opportunity. Rather than forcing the sweep against their reinforced base, circle your underhook toward a seatbelt grip, drive your chest into their exposed back, and begin establishing back control. The wide post that defends the sweep simultaneously removes their primary defense against the back take, creating a built-in offensive chain.
Q4: What is the optimal direction of force for the sweep and why is a straight-forward drive less effective? A: The optimal force direction is diagonal—across the opponent’s centerline and over their trapped knee. A straight-forward drive attacks the opponent’s strongest balance axis, where they can brace against linear force using their entire body structure. The diagonal drive attacks the weakest point in their base, rotating them over the trapped knee where they have no posting ability, converting the contest from a strength match into a leverage-based technique.
Q5: Where should your primary force generation come from during the explosive drive phase? A: The primary force should come from your outside posting leg, driving off the ball of your foot with an explosive hip drive forward. The underhook arm provides direction and connection but not the primary force. Generating power through leg drive produces significantly more force than arm pulling, fatigues more slowly, and does not telegraph the sweep through visible upper-body strain that alerts the opponent.
Q6: Your opponent drives forward with heavy whizzer and crossface pressure as you attempt to set up the sweep. What adjustment do you make? A: Rather than fighting their forward pressure head-on, redirect it by either entering deep half guard underneath their momentum or by absorbing the drive momentarily and timing a counter-sweep as their weight shifts past their base. If the whizzer pressure is manageable, use their forward commitment against them by loading your drive in the opposite direction of their force, catching them off-balance as their center of gravity moves too far forward.
Q7: What happens if you stop the sweep at the tipping point instead of committing fully through the rotation? A: Stopping at the tipping point allows the opponent to recover their base by posting or adjusting their weight distribution, negating all the setup work. Worse, the pause gives them an opportunity to counter-drive and flatten you to half guard bottom with improved grips from the scramble. Once the sweep passes the initiation phase, full commitment is essential—drive through until you land in a clear top position with chest-to-chest pressure established.
Q8: How does the underhook sweep integrate with other dogfight attacks to create a three-way offensive dilemma? A: The underhook sweep, back take, and forward drive sweep form a triangle of attacks from dogfight. Defending the underhook sweep by posting far creates a back take opening. Defending the back take by keeping hips low and whizzer tight opens the forward drive. Defending the forward drive by posting backward opens the underhook sweep. Each defense to one attack creates vulnerability to another, making it impossible for the opponent to defend all three simultaneously and ensuring the bottom player always has an available offensive option.
Safety Considerations
The Underhook Sweep involves explosive forward driving pressure channeled through the underhook grip. Avoid excessive rotational force on the opponent’s trapped knee during the sweep. Control the descent when the opponent falls to prevent impact injuries to their head, shoulder, or elbow. During training, communicate with your partner about the intensity of the drive. Be mindful of knee stress on the inside leg that remains trapped in the half guard configuration during rotation. When drilling, start at low intensity and increase gradually.