Atlas/SHOULDER LOCKS/Hammerlock
Shoulder locks·Shoulder joint, rotator cuff muscles, glenohumeral capsule · Gi & no-gi

Hammerlock.

Shoulder lock driving arm behind back up spine

// HAMMERLOCK
5
DANGER / 10
Risk level
Medium
shoulder joint, rotator cuff muscles, glenohumeral capsule
Tap urgency
Moderate
tap response
Difficulty
3
/ 5 — setup
Danger level
5
/ 10
Positions
37
entry points
Perm. damage
No
irreversible risk
//01—About this submission

What it is

Shoulder lock driving arm behind back up spine

What you do

The step-by-step execution breakdown lives in the app — mechanics, tips, and the full entry sequence.

Open1submission detailin the App Store↗
//02—Stats breakdown
Setup complexity
4/10
Learning priority
6/10
Escapability
4/10
Versatility
5/10
Danger level
5/10
//03—Safety notes
01

Shoulder injury risk is high from this position; tap immediately if uncomfortable.

02

Never fall onto your trapped arm to escape; this causes shoulder dislocation.

03

Partner: Control the arm first before cranking the shoulder joint.

04

Previous shoulder injuries = skip this submission in training until healed.

//04—IBJJF belt legality
WHITE — ILLEGALBLUE — LEGALPURPLE — LEGALBROWN — LEGALBLACK — LEGAL
//05—Entries by position

37 ways in.

All37entriesin the App Store↗
CONTROLLING60
Kimura Trap System
Kimura locked, control movement - sweep, take back, hunt submissions
12 ↗ transitionsControlling
CONTROLLING50
Uke Gatame
Pin arm across chest, heavy pressure - armlocks, control head, advance
12 ↗ transitionsControlling
CONTROLLING50
Side Control
Heavy crossface while hunting submissions
20 ↗ transitionsControlling
CONTROLLING50
Shoulder of Justice
Drive shoulder hard, use body weight, attack reactions, maintain pressure
7 ↗ transitionsControlling
CONTROLLING50
Short Base Back Control
Hooks high and tight - stay low, attack chokes
7 ↗ transitionsControlling
CONTROLLING50
Reverse Kesa Gatame
Facing their legs, control arm - attack legs, take back
14 ↗ transitionsControlling
CONTROLLING50
Quarter Nelson
Thread under armpit, drive up - break them flat, take back or truck
12 ↗ transitionsControlling
CONTROLLING50
North-South Spin Trap
Trap arm, heavy chest - north-south choke, kimura, block spin
18 ↗ transitionsControlling
CONTROLLING50
Hon Kesa Gatame
Chest across them, arm trapped - pin tight, attack submissions
17 ↗ transitionsControlling
CONTROLLING50
High Wrist Control
Pin wrist from top - isolate arm, advance, attack
13 ↗ transitionsControlling
CONTROLLING50
Gift Wrap
Arm trapped, hooks in - rear naked choke, kimura, mount
10 ↗ transitionsControlling
CONTROLLING50
Crucifix
Both arms isolated - attack freely, no defense
9 ↗ transitionsControlling
CONTROLLING50
Crossface
Forearm driving across jaw - control head, block turn
14 ↗ transitionsControlling
CONTROLLING50
100 Kilos
Sprawled chest pin - control and hunt submissions
19 ↗ transitionsControlling
CONTROLLING40
Twister Side Control
Leg hooked, chest heavy - twister grip, spinal pressure, back take
14 ↗ transitionsControlling
CONTROLLING40
Turtle
Control hips, get seatbelt, insert hooks, take the back
20 ↗ transitionsControlling
CONTROLLING40
Technical Mount
Knee near head, wide base - trap arm, take back
9 ↗ transitionsControlling
CONTROLLING40
S-Mount
One knee up, one down - isolate arm, attack armbar
10 ↗ transitionsControlling
CONTROLLING40
Body Triangle
Triangle locked, grip secured - squeeze tight, attack chokes
6 ↗ transitionsControlling
CONTROLLING40
Quarter Mount
Knee over, control far arm - mount, back, s-mount, arm triangle
11 ↗ transitionsControlling
CONTROLLING40
Mount
Heavy hips with submission threats
18 ↗ transitionsControlling
CONTROLLING40
Modified Scarf Hold
Arm trapped in armpit - control head, attack submissions
13 ↗ transitionsControlling
CONTROLLING40
High Mount
Knees at armpits, hips heavy - attack arms, choke neck
15 ↗ transitionsControlling
CONTROLLING40
Defensive Shell
Elbows tight, wait for openings, shrimp to guard when safe
8 ↗ transitionsControlling
CONTROLLING40
Crab Ride
Wide base on back - stay mobile, follow movement
9 ↗ transitionsControlling
CONTROLLING40
Body Lock Ride
Heavy chest pressure with tight body lock control
14 ↗ transitionsControlling
INITIATING30
Standing Back Control
Back taken standing - choke or drag down
14 ↗ transitionsInitiating
CONTROLLING30
Turtle Sit-Out
Sit hips out, post hand, get legs in, turn and guard
19 ↗ transitionsControlling
CONTROLLING30
North-South
Chest over their head - heavy weight, kimura threats
16 ↗ transitionsControlling
CONTROLLING30
Knee on Belly
Knee driving into belly - stay mobile, transition fast
19 ↗ transitionsControlling
CONTROLLING30
Inverted Turtle
Opponent inverted - stay balanced, take back when rolling
11 ↗ transitionsControlling
CONTROLLING30
Cradle Control
Hands locked around head and leg - compress tight
10 ↗ transitionsControlling
CONTROLLING30
Crab Ride Inversion
Hooks stay connected, follow their roll, hunt for back
12 ↗ transitionsControlling
CONTROLLING30
Back Mount
Hooks locked tight - control hips, attack neck
14 ↗ transitionsControlling
CONTROLLING30
Back Control
Seat belt grip with rear naked choke threat
12 ↗ transitionsControlling
INITIATING20
Arm Drag
Grab wrist and tricep, pull across, step behind
17 ↗ transitionsInitiating
INITIATING20
2-on-1 Tie
Wrist and tricep gripped, pull across body
19 ↗ transitionsInitiating
// Hammerlock · Shoulder locks

Drill it.
Log it. Track the tap rate.

Open Hammerlock in Grapla to add it to your drilling queue, log every attempt, and watch your finish rate move over the next 30 days.

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