Half Butterfly Top is a transitional position where the top player has passed one side of the butterfly guard but the bottom player retains one butterfly hook. This creates a dynamic half guard variant where the top player aims to complete the pass while the bottom player attempts to recover full butterfly guard or sweep. The position requires careful weight distribution from the top player to prevent the butterfly hook from generating lifting power while simultaneously advancing the pass.
This is a critical juncture in modern guard passing, as many high-level players use butterfly-based guards and the top player must understand how to neutralize the remaining hook while maintaining forward pressure. The position often arises during knee slice attempts, smash passes, or when passing aggressive butterfly guard players who fight to retain at least one hook. Success in this position requires understanding both pressure passing principles and the biomechanics of how the butterfly hook generates leverage.
The top player must establish upper body control first through crossface or underhook, then systematically neutralize the butterfly hook’s effectiveness through strategic weight distribution and hip positioning. The position demands constant forward pressure while maintaining a wide base to prevent sweeps, creating a technical challenge that separates effective passers from those who get swept or stalled in guard.
Position Definition
- Top player has passed to one side with upper body control while bottom player maintains one butterfly hook on the opposite side
- Top player’s weight is distributed forward with chest pressure on bottom player’s upper body, hips driving toward the mat to reduce hook effectiveness
- Bottom player is on their back or side with one leg creating butterfly hook insertion under top player’s thigh while other leg is controlled or passed
- Top player’s base is established with knees wide and hips low, creating stable platform to resist hook’s lifting mechanics
Prerequisites
- Partial pass of butterfly guard with one side cleared
- Control of bottom player’s upper body through crossface, underhook, or collar grips
- Bottom player retains one functional butterfly hook
- Top player has established forward pressure and weight distribution
Key Offensive Principles
- Keep weight distributed forward onto bottom player’s chest to reduce butterfly hook’s lifting effectiveness
- Control the near-side arm with underhook or overhook to prevent bottom player from creating frames
- Drive hips low and forward to flatten bottom player and reduce space for hook engagement
- Establish crossface or head control to limit bottom player’s ability to turn into you
- Maintain wide base with knees to prevent being swept while creating passing angles
- Prevent bottom player from recovering full butterfly guard by controlling their free leg
- Use strategic weight shifts to bait reactions and create passing opportunities
Decision Making from This Position
If bottom player extends butterfly hook for sweep attempt:
- Execute Leg Weave Pass → Side Control (Probability: 65%)
- Execute Smash Pass → Side Control (Probability: 55%)
Else if bottom player attempts to recover full butterfly guard:
- Execute Knee Slice Pass → Side Control (Probability: 70%)
- Execute Long Step Pass → Side Control (Probability: 60%)
Else if bottom player creates underhook and attempts to come up:
- Execute Underhook Pass → Side Control (Probability: 65%)
- Execute Leg Drag Pass → Side Control (Probability: 45%)
Else if bottom player turns to turtle to escape:
- Execute Front Headlock to Guillotine → Front Headlock (Probability: 50%)
- Execute Back Take from Top → Back Control (Probability: 55%)
Test Your Knowledge
Q1: What is the most critical weight distribution adjustment to neutralize the butterfly hook’s lifting power? A: Drive your chest forward and down onto the bottom player’s upper body while keeping your hips low and heavy. This shifts the load away from the hook’s optimal leverage point near the thigh and distributes your weight where the bottom player’s structural support is weakest. Avoid sitting upright, which allows the hook to engage fully and generate maximum elevation.
Q2: Your opponent begins to elevate with their butterfly hook - what immediate adjustment prevents the sweep? A: Immediately widen your base by spreading your knees outward while driving your hips forward toward the mat. Simultaneously apply heavier chest pressure and drive your shoulder across their face with a crossface. This combination removes space for the hook to generate lift and pins their upper body, killing the sweep before momentum builds.
Q3: What are the essential grips and control points for maintaining half butterfly top position? A: The primary controls are crossface pressure controlling their head position, underhook or overhook on the near-side arm to prevent framing, and control of the far hip or leg to prevent guard recovery. The crossface is paramount as it limits their ability to turn into you and generate sweeping angles. Secondary control includes using your chest as a connection point to feel their movements.
Q4: How do you shut down the bottom player’s primary escape route to deep half guard? A: Keep your hips heavy and your inside knee positioned to block their head from diving underneath you. When you feel them attempting to turn away and shoot their outside arm under your hips, immediately sprawl your hips back and drive weight forward to flatten them. Maintaining constant chest pressure prevents them from creating the angle needed to enter deep half.
Q5: What base errors most commonly lead to being swept from half butterfly top? A: The three most common base errors are: keeping knees too close together which creates a narrow platform easily tipped by hook elevation, allowing hips to rise above shoulder level which shifts your center of gravity above the hook’s fulcrum point, and posting weight on your hands instead of distributing through your chest and hips. Each error gives the hook maximum mechanical advantage for sweeps.
Q6: The bottom player gets an underhook and starts coming up - what technique chain prevents the sweep? A: When they establish the underhook and begin to elevate, immediately circle toward their back while maintaining head position. If they continue rising, transition to the Underhook Pass by driving your overhook deep, sprawling your hips away, and using your head to drive them back down. If they collapse back, immediately return to heavy pressure and restart your passing sequence.
Q7: How do you manage energy expenditure while maintaining pressure in this position? A: Use skeletal structure rather than muscular effort to maintain pressure - let your bodyweight work through proper alignment rather than actively pushing. Keep your hips low so you’re driving weight downward naturally. Avoid constant movement; instead, settle into pressure and wait for their reactions to guide your passing. Move in response to their attempts rather than initiating constantly.
Q8: Your opponent partially recovers butterfly guard by inserting their second hook - how do you recover control? A: Immediately address the new hook by driving your hips toward the mat on that side and using your knee or shin to block the hook’s elevation. Reestablish crossface pressure and work to clear one hook at a time by swimming your leg over or backstopping around it. Do not try to pass through double hooks - retreat slightly if needed to reset with only one hook engaged.
Success Rates and Statistics
| Metric | Rate |
|---|---|
| Retention Rate | 70% |
| Advancement Probability | 68% |
| Submission Probability | 30% |
Average Time in Position: 30-90 seconds