A structured K guard curriculum with real counters, clean links to matrix and 50/50, and practical troubleshooting.
The Bottom Line
You learn a full K guard with answers to common passes. You will connect to matrix, crab ride, and leg entanglements. You will not get beginner-only pacing or gi grips.
⚡️ Quick facts
Best for: Intermediate no-gi players
Skip if: You need basic drills
Tech focus: Backside 50/50, Matrix, Underhook Dlr
Biggest takeaway: Troubleshooting beats passers
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What You'll Learn
Serra black belt Jason Rau, known for sharp leg locks and back takes, lays out a three-volume K guard course. A standout is the honest troubleshooting vs scoop, V-grip, and leg-drag passes. He connects entries to matrix, crab ride, double 50/50, and back takes. The pacing suits intermediate players but stays digestible. Includes optional flowchart notes on Fanatics.
Primary Techniques You'll Drill
- Underhook Dlr
- Backside 50/50
- Matrix
- Crab Ride
- Double 50/50
- Outside Ashi
- Reverse Aoki Lock
- Knee Breakdown
- V Grip Counter
- Leg Drag Counter
Format & Level
- Instructional style: System Based, Conceptual
- Skill level: Intermediate
- Format: No-Gi
- Runtime: 1 hour and 44 minutes
- Volumes: 3
Should You Buy It?
Buy it now. I put Rau second because r/bjj consistently calls it the most complete middle-ground system with practical counters that translate directly to rolls.
Why Jason Rau?
Matt Serra black belt; frequent collaborator with Danaher alumni; known for sharp leg entanglements and back takes in sub-only circuits.
Community feedback
Here’s a summary of common feedback from platforms like Reddit’s r/bjj.
😍 Why People Love It
- Cleanest K guard troubleshooting I have used in sparring.
- Short, dense lessons; easy to rewatch between rounds.
- Great coverage of standing and kneeling opponents.
- Most complete system short of Mateusz's set.
🤔 Common Criticisms
- Premium price for runtime compared to others.
- Less focus on basic solo drills for day-one beginners.
Free Preview Lesson
Smart Alternatives
- Shotgun K Guard – Deeper finishing mechanics and explicit frontside branch. (Price: $127.00, 4 vols, 2025)
- K Guard & Matrix System Part 1 – If back takes are your main goal. (Price: $197.00, 8 vols)
Sources & References
Video Breakdowns
Official listing: View Understanding The K-Guard on BJJ Fanatics
Additional References
Your next step
You have the breakdown, community feedback, and my final thoughts. Now it’s your move.
