An Introduction To The Backside 50/50 Position
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Back Position Transition·Ryan Hall Online
This is your premium finishing position from the 50/50 guard, and one I have used successfully in the UFC against the le…
Back Position Transition
Familyバックポジショントランジション
TransliterationTranslation
Not yet documented
Overview
The Back Position Transition family covers techniques for transitioning to and maintaining back control — the second-most dominant position in grappling (after mount in some hierarchies, or the most dominant by many modern accounts) where the attacker controls the opponent from behind with hooks (legs around the waist) and a seatbelt grip (over-under arm control). [1] Back control is unique because the defender cannot see the attacker, limiting their defensive options and creating the primary platform for the rear naked choke — the most commonly finished submission in combat sports history. [1],[2] This family covers the transitions that achieve back control: from guard (berimbolo, kiss-of-the-dragon, back take from closed guard), from top position (mount-to-back transition when the opponent turns), from scrambles, and from the standing position (back clinch from takedowns and throws). [2],[3] The modern back attack system — combining hooks, body triangle, and systematic choking — has been developed most comprehensively by Marcelo Garcia (back take from butterfly guard) and John Danaher's 'Back Attack' system. [3]
Back TakeBack TransitionTaking the Back
History & Origin
Back control has been recognised as a dominant position throughout martial arts history, but systematic back taking and back attacking were refined in modern BJJ. [1] Marcelo Garcia's butterfly-to-back-take system (2000s-2010s) revolutionised how grapplers approach the back position. [1],[2] John Danaher's 'Back Attack' system further systematised back control, back maintenance, and choking sequences into a comprehensive curriculum. [2],[3] The berimbolo back take, developed by the Mendes brothers and Miyao brothers, added an entirely new pathway to the back from guard positions. [3]
Effectiveness
Back control is arguably the most dominant position in grappling — the rear naked choke is the most commonly finished submission in both BJJ and MMA competition history. [1] In the UFC, rear naked chokes account for more submission victories than any other single technique. [2] Back control with 4 points in IBJJF is the joint-highest scoring position alongside mount. [3]
Lineage
Competition Record
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Biomechanical Mechanism
Primary Action — Establishing and maintaining posterior control with hooks (or body triangle) and seatbelt grip, creating the platform for rear choking attacks
Joints Involved — Legs (hooks — feet hooked inside the opponent's thighs control lower body; body triangle — figure-four leg lock around the torso for maximum control), arms (seatbelt grip — one arm over the shoulder, one under the armpit, hands clasped on the chest), chest (chest-to-back contact provides the platform for choking)
Force Vector — Forward and inward — the hooks pull the attacker's hips into the opponent's back; the seatbelt pulls the opponent's upper body into the attacker's chest; the opponent is compressed between the hooks and the seatbelt
Control Mechanic — Back control works because the opponent cannot see or directly address the attacker — all defensive actions are reactive rather than proactive; the seatbelt controls the upper body, the hooks control the lower body, and the attacker is free to attack the neck with the rear naked choke or its variations
Position & Entry
From mount (opponent turns away) — When the mounted opponent turns to their side to attempt an escape, slide one knee to their back while establishing the seatbelt grip, then insert both hooks — the mount-to-back transition is the most common back take in competition [1]
From butterfly guard (Marcelo Garcia style) — From seated butterfly guard with an underhook, swim behind the opponent's arm, establish a seatbelt, and climb to their back using the butterfly hook as a platform — Marcelo Garcia's signature back take
From berimbolo — From De La Riva or reverse De La Riva guard, invert (roll under the opponent), thread behind them, and establish back control — the competition back take that defined the 2010s
From standing (back clinch) — From a standing scramble or takedown, establish a rear body lock from behind, jump or pull the opponent to the ground while inserting hooks [2]
Videos
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Ratings
Risk of injury to the person this technique is applied to
9
Extreme9/10
Very high for the defender — back control enables the rear naked choke (the most commonly finished submission in MMA and BJJ) and provides devastating ground-and-pound angles in MMA; the defender cannot see the attacker's choking attempts, making defence extremely difficult
Skill level needed to execute this technique reliably
Intermediate
Whether this technique is allowed under major competition rule sets
Restricted
— IJF — Guard pulling penalized as non-combativity — ground...
IJF Sport and Organisation Rules 2025, Article 27PDFLegal
— IBJJF — Legal — guard is fundamental to BJJ, sweeps from ...
IBJJF Rules Book v6.0, June 2024PDF— ADCC — Legal, guard pull penalized -1 point in points por...
ADCC Rules Update, April 2025PDF— Unified MMA — Legal — no penalty for playing guard
Unified Rules of MMA, August 2025PDF— FIAS Sport Sambo — Legal
FIAS International Sambo Competition RulesPDFTraining Notes
✓The seatbelt is the first priority — establish the seatbelt grip before worrying about hooks; the seatbelt controls the opponent's upper body and prevents them from turning (Danaher, Back Attack system) [1]
✓Hooks maintain the position; the seatbelt enables the attack — the hooks prevent the opponent from sliding off the back, but the choking arm of the seatbelt is what threatens the rear naked choke
✓Stay chest-to-back — the most common way to lose back control is allowing space between your chest and the opponent's back; maintain tight body contact at all times
✓When the opponent escapes one hook, immediately re-establish it — losing one hook begins the escape process; fight to maintain both hooks
✓In MMA, back control with ground-and-pound is devastating — the opponent cannot see the strikes coming and has limited defensive options
✓Study Marcelo Garcia's back taking — his butterfly-to-back-take system is the most replicated technique in modern BJJ
✓The body triangle is more controlling than hooks but harder to escape if you end up on the bottom — choose based on the situation [2]
✓Train back escape with equal intensity — understanding the escape teaches you how to maintain the position
Common Mistakes
!Reaching for the choke before establishing control — secure the seatbelt and hooks first, then attack the neck; rushing the choke results in losing the position
!Allowing space between chest and back — any space between the bodies allows the opponent to slide their hips to the mat and begin escaping
!Crossing ankles in back mount — crossed ankles expose a straight ankle lock; keep ankles uncrossed or use body triangle
!Focusing only on the rear naked choke — collar chokes (gi), arm triangles, and body triangle compression are alternative back attacks; don't be one-dimensional
!Not adjusting when the opponent defends — when the opponent defends the choke, transition to the other side or attack the arm; back attacks must flow
!Losing the seatbelt — if the seatbelt clasp is broken, the choking threat diminishes significantly; fight to maintain the clasp
Related Techniques
Rear Naked Choke — the primary submission from back controlBack Escape — the defensive counter to back controlMount — an alternative dominant position, often transitioned to from back controlGuard (Berimbolo) — the guard-based back take pathwaySeatbelt Escape — the first step in escaping back control
Counter Techniques
Seatbelt Escape — stripping the seatbelt grip to begin the escapeSlide Hips to Mat — dropping the hips to the mat on the choking side to escape hooksTurn Into the Opponent — rotating to face the opponent to escape back control to guardHook Strip — removing one hook at a time to begin disentanglingBody Triangle Escape — addressing the body triangle lock before escaping hooks
Setup Chain
1Identify Back Take Opportunity — recognise when the opponent turns away, leaves the arm exposed, or creates a berimbolo entry
2Establish Seatbelt — secure over-under arm control on the opponent's chest
3Insert Hooks or Body Triangle — establish leg control around the opponent's waist
4Maintain Chest-to-Back Contact — stay tight, no space between bodies
5Attack the Neck — establish choking grip (RNC, collar choke)
6Finish — squeeze the choke while maintaining positional control
Sources & References
Primary Source
Jiu-Jitsu University (Saulo Ribeiro, 2008)
1BookJiu-Jitsu University (Ribeiro, 2008)
Description sources — [1] Jiu-Jitsu University (Ribeiro, 2008) [2] Marcelo Garcia back-taking career [3] Danaher Back Attack system and berimbolo evolution
2BookBack Attack system (Danaher, BJJ Fanatics)
3BookX-Guard (Marcelo Garcia, 2008)
4OtherJapanese Combat Sports Katakana Convention
Standard katakana transliteration of Western martial arts terminology (外来語) — used in Japanese MMA, boxing, and BJJ communities
5CitationJiu-Jitsu University (Ribeiro, 2008)
Description sources — [1] Jiu-Jitsu University (Ribeiro, 2008) [2] Marcelo Garcia back-taking career [3] Danaher Back Attack system and berimbolo evolution
6CitationBack Attack system (Danaher, BJJ Fanatics)
7CitationX-Guard (Marcelo Garcia, 2008)
Community
Athletics
Requires
chest-to-back adherence, hook maintenance (leg dexterity), seatbelt grip strength
Favours
long arms (easier to establish seatbelt and choke), strong grip, leg dexterity for hook insertion
Key muscles
forearms (seatbelt grip and choke), adductors (squeezing hooks or body triangle), core (maintaining chest-to-back contact), biceps (choking squeeze)
Sub-techniques
Frequently Asked Questions
What's the key to controlling your opponent's leg in backside 50/50 position?
Ryan Hall emphasizes that the trick is to stay long and use the back of your thigh as a frame to prevent your opponent from pressing into you. Your weight itself becomes the control mechanism—their leg gets stapled in place by your body weight rather than relying solely on a heel hook lock.
How do I keep my opponent's legs separated in backside 50/50?
Use your right hand to block and keep their legs apart—this is an active control you want to maintain throughout the position to prevent them from closing their legs and escaping.
Should I always lock the heel hook in backside 50/50, or is it optional?
According to Ryan Hall, a heel hook lock isn't a prerequisite for the position like it is in many other positions. You can add it for redundancy in your control, but strong positional control through weight and framing may be sufficient.
What finishing technique should I use in backside 50/50?
Ryan Hall advises staying relaxed and not forcing things in an overpowered situation, as this causes submissions to miss. Instead, focus on marking and checking your opponent's position with techniques like the inside of your calf before finishing.
How does the Back Position Transition work?
The Back Position Transition family covers techniques for transitioning to and maintaining back control — the second-most dominant position in grappling (after mount in some hierarchies, or the most dominant by many modern accounts) where the attacker controls the opponent from behind with hooks (legs around the waist) and a seatbelt grip (over-under arm control). Back control is unique because the defender cannot see the attacker, limiting their defensive options and creating the primary platform for the rear naked choke — the most commonly finished submission in combat sports history.
Where does the Back Position Transition come from?
Back control has been recognised as a dominant position throughout martial arts history, but systematic back taking and back attacking were refined in modern BJJ. Marcelo Garcia's butterfly-to-back-take system (2000s-2010s) revolutionised how grapplers approach the back position.
Is the Back Position Transition legal in competition?
IBJJF: legal — Legal — guard is fundamental to BJJ, sweeps from guard score 2 points; IJF: restricted — Guard pulling penalized as non-combativity — groundwork from guard permitted …; ADCC: legal — Legal, guard pull penalized -1 point in points portion; Unified MMA: legal — Legal — no penalty for playing guard; FIAS Sport Sambo: legal — Legal
How dangerous is the Back Position Transition?
Danger rating 9/10. Very high for the defender — back control enables the rear naked choke (the most commonly finished submission in MMA and BJJ) and provides devastating ground-and-pound angles in MMA; the defender cannot see the attacker's choking attempts, making defence extremely difficult
How do I set up the Back Position Transition?
The standard setup chain: Identify Back Take Opportunity → Establish Seatbelt → Insert Hooks or Body Triangle → Maintain Chest-to-Back Contact → Attack the Neck → Finish.
How do I defend against the Back Position Transition?
Standard counters include: Seatbelt Escape — stripping the seatbelt grip to begin the escape / Slide Hips to Mat — dropping the hips to the mat on the choking side to escape hooks / Turn Into the Opponent — rotating to face the opponent to escape back control to guard / Hook Strip — removing one hook at a time to begin disentangling.
What are the variants of the Back Position Transition?
Common variants: Standard back control (hooks in) (both feet hooked inside the opponent's thighs with seatbe…); Body triangle back control (figure-four leg lock around the torso instead of hooks; m…); Rear mount (back mount) (seated behind the opponent with hooks in; the full back m…); Chair sit (seated behind the opponent without hooks, using the seatb…); Truck to back (transitioning from the 10th Planet Truck position to stan…); Gift wrap back control (wrapping the opponent's arm across their own neck for add…).
How effective is the Back Position Transition in competition?
Back control scores 4 points in IBJJF (highest alongside mount) and 3 points in ADCC. The rear naked choke from back control is the most commonly finished submission in UFC history.
What are common mistakes when doing the Back Position Transition?
Top errors to watch for: Reaching for the choke before establishing control — secure the seatbelt and hooks first, then attack the neck; rushi… / Allowing space between chest and back — any space between the bodies allows the opponent to slide their hips to the m… / Crossing ankles in back mount — crossed ankles expose a straight ankle lock; keep ankles uncrossed or use body triangle / Focusing only on the rear naked choke — collar chokes (gi), arm triangles, and body triangle compression are alternat….
What are other names for the Back Position Transition?
The Back Position Transition is also known as Back Take, Back Transition, Taking the Back.