Kimura Trap Bottom is a highly effective control position from the bottom where the practitioner secures a Kimura grip on the opponent’s arm while establishing positional control through underhooks, lockdown, or other retention mechanisms. This position represents a paradigm shift in bottom-side control thinking, transforming what would traditionally be a defensive position into an offensive platform. The Kimura grip serves as both a control mechanism and an offensive threat, allowing the bottom player to off-balance, sweep, or submit the opponent while maintaining defensive integrity.
The position is most commonly entered from half guard bottom, side control bottom, or turtle when the opponent overcommits with their arm placement or fails to defend the Kimura grip establishment. The bottom practitioner uses the Kimura grip to control the opponent’s shoulder and arm, creating a mechanical advantage that disrupts the top player’s base and posture. This grip, combined with hip positioning and leg entanglement, creates a system where the bottom player can systematically work toward sweeps, back takes, or submissions despite being in what appears to be an inferior position.
The Kimura Trap Bottom exemplifies modern BJJ’s emphasis on creating offensive opportunities from defensive positions. Rather than simply surviving or escaping, the practitioner uses the Kimura grip as an anchor point to control distance, manipulate the opponent’s weight distribution, and create dilemmas that force reactions. The system includes high-percentage techniques like the Old School Sweep, rolling Kimura, and back takes that all stem from the same foundational grip, creating a cohesive attacking system rather than isolated techniques.
Strategically, the position forces top players into impossible choices—they must simultaneously defend the Kimura submission, prevent sweeps, and maintain positional control, but cannot effectively address all three threats. This creates predictable defensive reactions that the bottom player can exploit with predetermined counters. The position is particularly effective in both gi and no-gi contexts, with the Kimura grip providing reliable control regardless of friction and grip variations available. Advanced practitioners use the Kimura Trap Bottom as their primary half guard system, often preferring it to traditional underhook-based approaches due to its superior control and finishing mechanics.
Position Definition
- Practitioner maintains Kimura grip on opponent’s arm with figure-four configuration (practitioner’s outside hand grips their own wrist after threading under opponent’s arm), ensuring deep grip placement near opponent’s elbow for maximum control and leverage while preventing grip breaks through constant inward pressure and elbow positioning that protects the lock structure
- Practitioner’s body positioned on bottom with shoulders on or near mat, using hips and legs to create connection with opponent through half guard lockdown, butterfly hooks, or other retention mechanisms that prevent opponent from settling weight and establishing stable top control while maintaining mobility for sweeping and transitional movements
- Opponent positioned on top or side with trapped arm extended forward or pulled across their body, creating structural weakness in their base as the Kimura grip forces their shoulder into compromised position and limits their ability to distribute weight effectively or establish stable posting positions with their compromised arm
- Practitioner maintains active hip positioning and frame management with free arm, using shoulder pressure, forearm frames, or underhooks to control distance and prevent opponent from achieving crushing pressure or advancing position while working the Kimura system, creating space necessary for sweeping mechanics and preventing complete flattening that would neutralize offensive options
Prerequisites
- Opponent commits arm forward or across body in half guard, side control, or turtle position, creating opportunity to thread arm under and establish Kimura grip
- Practitioner able to secure deep Kimura grip with proper hand positioning (own wrist grip) before opponent recognizes threat and withdraws arm
- Practitioner maintains some form of guard retention or hip mobility to prevent opponent from completely flattening and establishing crushing top pressure
- Sufficient space and mobility to work hips and execute sweeping or off-balancing movements despite being on bottom
Key Defensive Principles
- Maintain deep Kimura grip with figure-four configuration positioned as close to opponent’s elbow as possible for maximum control and submission threat
- Use Kimura grip to control opponent’s shoulder and disrupt their base by pulling arm across their body or driving it behind their back, forcing weight shifts
- Keep hips mobile and active, using lockdown, butterfly hooks, or hip movement to prevent opponent from settling weight and establishing stable position
- Create constant dilemmas where opponent must choose between defending Kimura submission, preventing sweep, or maintaining top position control
- Use free arm strategically for frames, underhooks, or additional control points that complement the Kimura grip and enable offensive transitions
- Maintain proper distance control to prevent opponent from posturing away and breaking Kimura grip or driving forward to establish crushing pressure
- Work systematically through Kimura Trap System sequences (sweeps, back takes, submissions) rather than forcing single techniques, flowing between options based on opponent reactions
Decision Making from This Position
If opponent widens base and posts far leg to defend Kimura submission:
- Execute Old School Sweep → Mount (Probability: 70%)
- Execute Rolling Kimura → Mount (Probability: 55%)
If opponent turns into Kimura grip to alleviate shoulder pressure or defend submission:
- Execute Kimura to Back Take → Back Control (Probability: 75%)
- Execute Half Guard to Back Take → Back Control (Probability: 60%)
If opponent drives forward aggressively to flatten hips and neutralize Kimura system:
- Execute Rolling Kimura → Mount (Probability: 65%)
- Execute Underhook Sweep from Half → Side Control (Probability: 60%)
If opponent pulls arm back and attempts to extract from Kimura grip:
- Execute Kimura Sweep → Armbar Control (Probability: 80%)
- Execute Closed Guard to Omoplata → Omoplata Control (Probability: 50%)
Test Your Knowledge
Q1: What is the optimal hip positioning for maintaining offensive capability from Kimura Trap Bottom? A: Keep your hips turned toward your opponent with your bottom hip slightly elevated off the mat, creating an angle that enables sweeping mechanics. Your hips should never be flat on the mat, as this eliminates leverage and allows opponent to settle their weight. The lockdown or butterfly hook connection with their trapped leg maintains this angle while preventing them from passing or flattening you.
Q2: Your opponent starts driving forward with heavy crossface pressure - what adjustment do you make? A: Use their forward drive against them by maintaining the Kimura grip and either executing a rolling Kimura (using their momentum to come on top) or transitioning to deep half guard by sliding underneath them. Their forward pressure creates momentum you can redirect. Additionally, use your free arm to frame on their shoulder or jaw to create distance and relieve the crossface pressure before they completely flatten you.
Q3: What are the essential grips for maintaining Kimura Trap Bottom position? A: The primary grip is the figure-four Kimura configuration with your outside hand gripping your own wrist after threading under opponent’s tricep. This must be deep near their elbow, not their wrist. Your free hand should either frame on their shoulder/face or establish an underhook on their far side for additional control. Your legs provide the secondary grip through lockdown configuration or butterfly hook on their trapped leg.
Q4: How do you shut down the opponent’s primary counter from Kimura Trap Bottom? A: The primary counter is opponent pulling their arm back and extracting it from the grip. Prevent this by keeping constant inward pressure with the grip, positioning your elbows tight to your body, and using your hip angle to maintain the arm extended across their centerline. When you feel them pulling back, immediately increase submission pressure or initiate the Old School Sweep, making their extraction attempt work against them.
Q5: What is the correct base structure for generating sweeping power from Kimura Trap Bottom? A: Establish a tripod base with your posted outside foot flat on the mat, your shoulder blade on the mat, and your head driving into opponent’s chest. This creates three stable contact points that allow powerful hip elevation for sweeps. Your lockdown leg controls their trapped leg while your hips bridge up and toward them. The sweeping motion comes from this unified base structure, not from pulling with the arms.
Q6: Your opponent successfully widens their base and posts their far hand - how do you still complete the sweep? A: Their base widening actually creates the setup for Old School Sweep by exposing their far leg for ankle hooking. Hook their far ankle with your outside leg while bridging toward them and pulling the Kimura grip across your body. Their wide base and posted hand cannot prevent this off-balancing angle. Alternatively, use their commitment to base defense to threaten the back take, as their focus on staying upright often exposes their back.
Q7: How do you manage energy when working the Kimura Trap Bottom system against a patient opponent? A: Use efficient grip maintenance by keeping elbows tight and letting the figure-four structure do the work rather than constantly squeezing. Cycle through threat sequences methodically - show the sweep, show the submission, show the back take - forcing them to constantly adjust and expend energy. Rest when opponent isn’t actively attacking by maintaining the grip with minimal effort. The bottom player with the Kimura grip can afford patience because the top player’s arm is compromised.
Q8: Your opponent partially passes but you maintain the Kimura grip - what is your recovery sequence? A: Keep the Kimura grip as your anchor and immediately recover half guard by shrimping your hips and re-inserting your knee shield or lockdown on their trapped leg. The grip prevents them from consolidating the pass because their arm is compromised. If they continue to advance, use the grip to pull yourself onto your side and threaten the back take as they pass, converting their positional advancement into back exposure.
Success Rates and Statistics
| Metric | Rate |
|---|---|
| Retention Rate | 75% |
| Advancement Probability | 68% |
| Submission Probability | 48% |
Average Time in Position: 45-90 seconds before sweep or submission attempt