Supine Rear Mount

SubFamily

仰向け後ろ騎乗位(Aomuke Ushiro Kijōi)

Traditional

Translation: supine rear mount

Overview

The Supine Rear Mount subfamily covers the rear mount position where the controlling fighter is lying on their back with the opponent on top of them, face up, with hooks or body triangle maintaining control. [1] The supine rear mount is the more common rear mount configuration in competition because escaping fighters often roll to put the controlling fighter on their back, and skilled back takers maintain the position from supine. [1],[2] Despite being on the bottom, the supine rear mount is still considered a dominant position because the controlling fighter maintains full back control and attacking capability. [2],[3]

Also known as
Flat Back Mount[1]Supine Back Control[2]Prone Rear Mount[3]

History & Origin

The supine rear mount is the most common back control configuration in competitive grappling and MMA, as opponents frequently attempt to escape back control by rolling, resulting in the controlling fighter ending up on their back. [1] The position's dominance despite being on the bottom demonstrates the primacy of back control in the positional hierarchy. [2],[3]

Effectiveness

The supine rear mount positions the attacker on their back behind a face-up opponent, the traditional finishing position for rear naked chokes. [1],[2]

Lineage

The supine rear mount is the classical back control position in BJJ and judo ne-waza. [1]

Competition Record

The supine rear mount is the standard back control finishing position in MMA and BJJ competition. [1]

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Biomechanical Mechanism

Primary ActionGravity-assisted top control — body weight pins the opponent's torso to the ground
Joints InvolvedAttacker's hips (heavy base), knees (clamped for ride control), opponent's spine (pinned)
Force VectorDownward — gravity plus active hip pressure maximises control and submission opportunities
Positional MechanicHigh mount raises the centre of gravity above the opponent's shoulder line, isolating their arms for attacks

Position & Entry

From guard pass completionAfter passing the guard, establish mount by placing knees on either side of the opponent's torso
From sweepComplete a sweep from guard and land directly in mount position on top
From side control (knee slide)From side control, slide the knee across the opponent's belly and settle into mount

Videos

Spinal Immobilization: Supine Patient

0
Supine Rear Mount·San Diego Miramar EMT Program

Demonstration of the Spinal Immobilization for the Supine Patient Skill. This is a testable skill for the San Diego Coun

1 video

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Ratings

Danger Rating

Risk of injury to the person this technique is applied to

4
Moderate4/10

Back control is dominant position; enables rear chokes (Danaher 2021)

Difficulty

Skill level needed to execute this technique reliably

Intermediate
Competition Legality

Whether this technique is allowed under major competition rule sets

IBJJF — Legal, mount scores 4 points — highest-scoring po...
IBJJF Rules Book v6.0, June 2024PDF
ADCC — Legal, mount scores 2 points
ADCC Rules Update, April 2025PDF
Unified MMA — Legal dominant position
Unified Rules of MMA, August 2025PDF
UWW — Legal, back exposure scores points, pin ends match ...
UWW International Wrestling Rules, January 2026PDF
FIAS Sport Sambo — Legal, pin scores points
FIAS International Sambo Competition RulesPDF

Training Notes

The supine rear mount has the attacker lying on their back with the opponent on top of them, facing the ceiling — the most secure form of back control (Danaher, Back Attacks, 2018)
In the supine position, the attacker's back is on the mat and the opponent sits in front of them — the attacker's weight is not a factor, but the leg and arm controls are at maximum
The supine rear mount is the most secure because gravity works against the opponent — they must fight upward to escape
The supine position is achieved by falling to one side from the seated position — fall to the strong seatbelt side
From supine, the RNC is the primary attack — the opponent is facing the ceiling with the attacker's arms around their neck
The supine rear mount is the position where most RNC finishes occur — the control is so secure that the attacker can focus entirely on the choke
In competition, the supine rear mount is where experienced grapplers spend most of their back-control time
The opponent's escape options from supine are limited: hand fight, scoot down, shoulder walk, or turn

Common Mistakes

!Not falling to the strong seatbelt side — always transition to the side that favours the choke
!Allowing the opponent to turn to their side — prevent the turn with hooks and seatbelt
!Not using gravity to your advantage — in the supine position, the opponent must work against gravity to escape
!Keeping the opponent too far above you — keep them low; if they slide up, your choke access improves
!Not attacking from the supine position — the security of the position should enable confident attacking
!Losing hooks in the supine transition — maintain hook connection as you fall to the back
!Not maintaining chest contact during the supine position — the opponent will create space and begin escaping

Related Techniques

Counter Techniques

Setup Chain

1Pass the Guardclear the opponent's legs to advance to this dominant position
2Settle Weightdistribute body weight to maintain heavy pressure
3Control Armsmanage the opponent's arms to prevent frames and escapes
4Threaten Submissionsattack to force defensive reactions and maintain dominance

Sources & References

Primary Source

Mastering Jujitsu (Renzo Gracie & John Danaher, 2003)

1BookJiu-Jitsu University (Ribeiro, 2008)

Alias sources — [1] IBJJF Rules (2024) [2] Jiu-Jitsu University (Ribeiro, 2008) [3] Mastering Jujitsu (Gracie & Danaher, 2003)

2BookBrazilian Jiu-Jitsu: Theory and Technique (Gracie & Gracie, 2001)

Effectiveness sources — [1] Mastering Jujitsu (Gracie & Danaher, 2003) [2] Jiu-Jitsu University (Ribeiro, 2008)

Standard Japanese martial arts terminology (kanji/hiragana)

4OtherJapanese Martial Arts Standard Terminology (武道用語)

Established Japanese martial arts naming convention — native Japanese term (和語/漢語)

5CitationJiu-Jitsu University (Ribeiro, 2008)

Alias sources — [1] IBJJF Rules (2024) [2] Jiu-Jitsu University (Ribeiro, 2008) [3] Mastering Jujitsu (Gracie & Danaher, 2003)

6CitationBrazilian Jiu-Jitsu: Theory and Technique (Gracie & Gracie, 2001)

Effectiveness sources — [1] Mastering Jujitsu (Gracie & Danaher, 2003) [2] Jiu-Jitsu University (Ribeiro, 2008)

Community

Athletics

Requires

base stability, heavy hips, ride ability

Favours

heavier build with strong hips for pressure

Key muscles

hip adductors, core, glutes, quadriceps

Sub-techniques

Frequently Asked Questions

How should I secure the straps when immobilizing a supine patient on a backboard?

Check all straps to ensure they are secure, and tighten them as needed. Make sure you have an even number of straps on each side of the patient for balanced immobilization.

What should I do if a strap gets stuck during supine immobilization?

Do not pull on stuck straps; instead, address them as needed once the patient is properly positioned on the board.

In what order should I secure different parts of the body when immobilizing a supine patient?

Secure the torso and body first with straps, then move to securing the patient's head to the board as the final step of immobilization.

How does the Supine Rear Mount work?

The Supine Rear Mount subfamily covers the rear mount position where the controlling fighter is lying on their back with the opponent on top of them, face up, with hooks or body triangle maintaining control. The supine rear mount is the more common rear mount configuration in competition because escaping fighters often roll to put the controlling fighter on their back, and skilled back takers maintain the position from supine.

Where does the Supine Rear Mount come from?

The supine rear mount is the most common back control configuration in competitive grappling and MMA, as opponents frequently attempt to escape back control by rolling, resulting in the controlling fighter ending up on their back. The position's dominance despite being on the bottom demonstrates the primacy of back control in the positional hierarchy.

Is the Supine Rear Mount legal in competition?

IBJJF: legal — Legal, mount scores 4 points — highest-scoring position; IJF: legal — Legal, osaekomi (pin) — 10-19 seconds scores waza-ari, 20 seconds scores ippon; ADCC: legal — Legal, mount scores 2 points; Unified MMA: legal — Legal dominant position; UWW: legal — Legal, back exposure scores points, pin ends match by fall; FIAS Sport Sambo: legal — Legal, pin scores points

How dangerous is the Supine Rear Mount?

Danger rating 4/10. Moderate — back control is dominant position; enables rear chokes (Danaher 2021)

How do I set up the Supine Rear Mount?

The standard setup chain: Pass the Guard → Settle Weight → Control Arms → Threaten Submissions.

How do I defend against the Supine Rear Mount?

Standard counters include: Bridge (Upa) — explosive hip elevation to off-balance the top player / Elbow-Knee Escape (Shrimp) — create space by driving elbow to knee and hip-escaping / Frame — establish forearm frames to prevent the top player from settling weight.

What are the variants of the Supine Rear Mount?

Common variants: Low mount (hips heavy on the opponent's belly, grapevines in for sta…); High mount (knees under the armpits, arms isolated for submissions); S-mount (one knee high under the armpit, other leg across for arm …); Technical mount (one leg hooked, one knee posted, modified for back-take t…).

How effective is the Supine Rear Mount in competition?

The supine rear mount is the standard back control finishing position in MMA and BJJ competition.

What are common mistakes when doing the Supine Rear Mount?

Top errors to watch for: Not falling to the strong seatbelt side — always transition to the side that favours the choke / Allowing the opponent to turn to their side — prevent the turn with hooks and seatbelt / Not using gravity to your advantage — in the supine position, the opponent must work against gravity to escape / Keeping the opponent too far above you — keep them low; if they slide up, your choke access improves.

What are other names for the Supine Rear Mount?

The Supine Rear Mount is also known as Aomuke Ushiro Kijōi, Flat Back Mount, Supine Back Control, Prone Rear Mount.