The Half Butterfly Sweep is the signature sweep from the half butterfly guard, exploiting the asymmetric structure of one butterfly hook combined with half guard leg control to create a powerful diagonal off-balancing force. The sweep uses the butterfly hook to elevate the opponent’s center of gravity while the half guard legs anchor the trapped leg, preventing the opponent from posting to recover base. When both forces coordinate simultaneously, the opponent is toppled diagonally over the trapped leg and the sweeper follows through directly into side control.
This sweep is most effective when the opponent’s weight is centered or committed slightly forward, as the forward momentum can be redirected through the butterfly hook’s elevation arc. The technique punishes pressure passers who attempt to flatten the bottom player, turning their own forward drive into the loading mechanism for the sweep. Against opponents who sprawl back defensively, the sweep becomes lower percentage but creates openings for deep half guard entries, X-guard transitions, and back takes.
Strategically, the Half Butterfly Sweep anchors the entire half butterfly offensive system. Its constant threat forces the top player into defensive weight management that constrains their passing options. When the top player adjusts to defend the sweep, they necessarily compromise either their crossface pressure or their hip positioning, opening complementary attacks that make the half butterfly guard a persistent offensive platform.
From Position: Half Butterfly (Bottom) Success Rate: 50%
Possible Outcomes
| Result | Position | Probability |
|---|---|---|
| Success | Side Control | 50% |
| Failure | Half Butterfly | 30% |
| Counter | Side Control | 20% |
Attacker vs Defender
| Attacker | Defender | |
|---|---|---|
| Focus | Execute technique | Prevent or counter |
| Key Principles | Load the opponent’s weight onto the butterfly hook through u… | Deny the underhook on the butterfly side through active hand… |
| Options | 7 execution steps | 4 defensive options |
Playing as Attacker
Key Principles
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Load the opponent’s weight onto the butterfly hook through underhook pulling before initiating the sweep drive
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Coordinate hook elevation and underhook pull as one simultaneous explosive movement, never as sequential actions
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Create a 45-degree hip angle toward the butterfly hook side to optimize the diagonal sweep trajectory over the trapped leg
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Maintain half guard squeeze throughout the entire sweep to prevent the opponent from posting their trapped leg to recover base
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Time the sweep when the opponent’s weight shifts forward or they commit to a pass, redirecting their own momentum into the sweep arc
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Follow through immediately to top position after the sweep lands, consolidating side control before the opponent can recover guard
Execution Steps
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Confirm grip configuration and hook placement: Verify your underhook is deep on the butterfly hook side with your hand controlling the opponent’s l…
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Adjust hip angle to create optimal sweep trajectory: Shift your hips approximately 45 degrees relative to the opponent’s centerline, angling toward the b…
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Load opponent’s weight over the butterfly hook: Use your underhook grip to pull the opponent’s upper body forward and toward the butterfly hook side…
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Drive butterfly hook upward explosively: Extend your hip and knee on the butterfly hook side in one explosive upward and outward motion, lift…
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Pull underhook toward opposite hip simultaneously: As the butterfly hook drives upward, pull your underhook arm forcefully toward your opposite hip in …
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Follow opponent’s fall and rotate to top: As the opponent topples to the side, follow their momentum by rotating your body over them. Release …
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Consolidate side control position: Once on top, immediately establish crossface control with your forearm across their neck and far-sid…
Common Mistakes
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Attempting the sweep without loading the opponent’s weight onto the butterfly hook first
- Consequence: The sweep lacks sufficient mechanical advantage because the opponent’s weight is evenly distributed, requiring excessive force that is easily resisted and often fails
- Correction: Use the underhook to pull the opponent’s upper body forward until you feel their weight settle onto your butterfly hook leg before initiating the drive
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Driving the butterfly hook straight up instead of along the diagonal matching your hip angle
- Consequence: The opponent can base out easily because the upward force does not direct them over the trapped leg, allowing them to simply settle back down or post to either side
- Correction: Set the hip angle to 45 degrees first, then drive the hook along that diagonal trajectory to direct the opponent over the trapped half guard leg where they cannot post
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Sequencing the hook drive and underhook pull instead of executing them simultaneously
- Consequence: The opponent has a reaction window between the two separate force applications, allowing them to base or adjust their weight before the second force arrives
- Correction: Drill the hook drive and underhook pull as one unified explosive movement initiated at the same instant until they feel like a single action
Playing as Defender
Key Principles
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Deny the underhook on the butterfly side through active hand fighting and whizzer control to eliminate the opponent’s upper body pulling power
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Keep hips low and heavy to prevent the butterfly hook from generating meaningful upward force against your base
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Recognize sweep timing by monitoring the opponent’s hip angle adjustments and increases in butterfly hook pressure
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Maintain a wide base with your free leg posted for lateral stability against the diagonal sweep trajectory
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Apply crossface pressure to prevent the opponent from achieving the seated posture necessary for sweep leverage
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When the sweep is initiated, sprawl hips back immediately rather than trying to resist the elevation force directly through rigidity
Recognition Cues
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Opponent adjusts hip angle to approximately 45 degrees toward the butterfly hook side, establishing the diagonal sweep trajectory
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Opponent fights aggressively for underhook on the butterfly side, attempting to thread their arm deep under your armpit
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Butterfly hook pressure increases significantly with active upward driving force against your inner thigh
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Opponent shifts from passive guard retention to active forward pulling with their upper body grips, loading your weight onto the hook
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Opponent’s posture becomes more upright or seated as their shoulders rise off the mat to generate sweeping leverage
Defensive Options
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Sprawl hips back and drive heavy crossface to flatten opponent’s posture and kill the hook - When: When you feel butterfly hook begin to elevate or opponent establishes underhook on butterfly side
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Whizzer the opponent’s underhook arm and drive shoulder pressure to strip their grip - When: Immediately when opponent establishes underhook on butterfly side, before they can coordinate the full sweep sequence
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Backstep around the half guard and drive knee through to initiate guard pass during sweep setup - When: When you read the sweep setup early and the opponent’s butterfly hook is not yet fully loaded with your weight
Position Integration
The Half Butterfly Sweep is the primary offensive weapon from half butterfly guard and the technique that makes the entire position viable as an attacking platform rather than a passive retention guard. Without a credible sweep threat, the top player can systematically dismantle the half butterfly position with impunity. This sweep integrates with the broader half guard ecosystem by creating chain reactions: when the opponent defends by shifting weight backward, deep half guard entries become available; when they post wide, back take opportunities emerge; when they strip the underhook, transitions to knee shield or lockdown provide fallback options. In competition, establishing the Half Butterfly Sweep as a consistent threat forces opponents into predictable defensive patterns that advanced practitioners exploit through complementary attacks.