The Cock Block

SubFamily

ザ・コックブロック(Za Kokku Burokku)

Translation: The cock block

Overview

The Cock Block is a defence against being slammed from closed guard or rubber guard, using leg positioning and grip adjustment to prevent the opponent from lifting. [1]

Also known as
Cock BlockSlam Defence

History & Origin

Developed by Eddie Bravo for 10th Planet. [1]

Effectiveness

Essential escape for no-gi practitioners. [1]

Lineage

10th Planet Jiu-Jitsu. [1]

Competition Record

Used in EBI and MMA

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Biomechanical Mechanism

Primary ActionEscape mechanics for The Cock Block

Position & Entry

From bottom positionExecute the cock block

Variants

Not yet documented

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Ratings

Danger Rating

Risk of injury to the person this technique is applied to

2
Low2/10

Defensive escape

Difficulty

Skill level needed to execute this technique reliably

Advanced
Competition Legality

Whether this technique is allowed under major competition rule sets

Unified MMA — Legal defensive technique
Unified Rules of MMA, August 2025PDF
IBJJF — Legal — escapes and sweeps are fundamental to BJJ...
IBJJF Rules Book v6.0, June 2024PDF
FIAS Sport Sambo — Legal
FIAS International Sambo Competition RulesPDF
FIAS Combat Sambo — Legal
FIAS Combat Sambo RulesPDF

Training Notes

Drill under pressure with progressive resistance (Bravo, 2006)

Common Mistakes

!Panicking
!Not timing the hip movement

Related Techniques

Counter Techniques

Setup Chain

1Under attack → The Cock Block → Guard recovery

Sources & References

Primary Source

Mastering the Rubber Guard (Bravo, 2006)

1Book[1] Bravo, E. with Krauss, E. and Cordoza, G. (2006). Mastering the Rubber Guard: Jiu-Jitsu for Mixed Martial Arts Competition. Victory Belt Publishing.
2Citation[1] Bravo, E. with Krauss, E. and Cordoza, G. (2006). Mastering the Rubber Guard: Jiu-Jitsu for Mixed Martial Arts Competition. Victory Belt Publishing.

[1] Bravo, Mastering the Rubber Guard (2006) — technique description and application

Community

Athletics

Hip mobility

Timing

Notes

The Cock Block is a 10th Planet defense documented in Mastering the Rubber Guard. Part of Bravo's defensive system against specific passes and attacks. (Bravo, Mastering the Rubber Guard, 2006)

Frequently Asked Questions

How does the The Cock Block work?

The Cock Block is a defence against being slammed from closed guard or rubber guard, using leg positioning and grip adjustment to prevent the opponent from lifting.

Where does the The Cock Block come from?

Developed by Eddie Bravo for 10th Planet.

Is the The Cock Block legal in competition?

Unified MMA: legal — Legal defensive technique; IBJJF: legal — Legal — escapes and sweeps are fundamental to BJJ, sweep from bottom scores 2…; IJF: legal — Legal; ADCC: legal — Legal, sweep scores 2 points (4 from mount/back); FIAS Sport Sambo: legal — Legal; FIAS Combat Sambo: legal — Legal

How dangerous is the The Cock Block?

Danger rating 2/10. Defensive escape

How do I set up the The Cock Block?

The standard setup chain: Under attack → The Cock Block → Guard recovery.

How do I defend against the The Cock Block?

Standard counters include: Maintain control / Re-establish position.

How effective is the The Cock Block in competition?

Used in EBI and MMA

What are common mistakes when doing the The Cock Block?

Top errors to watch for: Panicking / Not timing the hip movement.

What are other names for the The Cock Block?

The The Cock Block is also known as Za Kokku Burokku, Cock Block, Slam Defence.