Butterfly Ashi Garami

What This Is

Butterfly ashi from the defending side. The attacker has a butterfly hook under your leg and an ashi structure on it, and the hook is doing something specific: taking your weight off the mat.

Elevation is the control here. A leg the attacker is carrying is a leg you cannot base on, cannot post with, and cannot easily withdraw.

That also names the escape. Get the weight back down and the position degrades on its own.

Safety First

Butterfly Ashi Garami (Defending) is an elevated risk technique. The ashi structure makes the standard outside-line finishes available — the straight ankle lock and the outside heel hook. Elevation adds a fall risk during the escape if the defender pulls the leg free without controlling the descent. Serious injury can occur Medium. The elevation has to be maintained, which costs the attacker something and gives you a little room..

If you are new to this technique: read this section before anything else. Understanding the danger is part of understanding the technique.

Tap early — before pain, not because of it.
The person applying the technique is responsible for releasing immediately.
Communicate before drilling. Know your partner's experience level with this position.
Do not train this technique while fatigued or in live rolling without established mat culture.

Tapping culture and why it matters → Injury guide for this technique →

The most useful safety habit here is landing rather than tapping: agree that the escape ends with your weight back on the mat, so nobody learns to rip an elevated leg free.

The Two Sides Compared

The same position read from each side. Advantage is one number and it hides most of what matters — the asymmetry worth seeing is in what the position costs each player and how long it lasts.

Axis	Attacking	Defending
Position type	Controlling	Defensive
Risk level	Medium	Medium
Energy cost	Medium	Medium
Time horizon	Medium	Medium

The key difference: Elevation is the control — the defender who gets weight back to the mat has already escaped most of it.

This is the most symmetrical row in the family: medium on every axis for both players. That symmetry is the good news — a position that costs the attacker as much as it costs you is a position that opens.

How You End Up Here

Butterfly ashi comes out of a sweep exchange rather than a leg-lock one, and that is true whichever end of it you were on.

From butterfly guard, as the attacker converts a hook

The most common path, and it starts as a sweep attempt rather than a leg attack.

From your own passing attempt

Stepping into a butterfly hook with the lead leg is how passers arrive here.

The Invariant in Action

Inside space and elevation are the same thing here — the hook is inside and underneath.

Connection transfers weight, and here it transfers yours onto the hook. That is what the elevation is doing.

The foot remains the handle, and the elevation is what stops you taking it back.

Base is the whole contest. Regain it and the position stops working.

Escape Mechanics

Get the weight back to the mat

The primary answer and an unusually clean one. A hook carrying nothing is not a control.

Post wide with the free leg

Base restored on the other side reduces what the hook can lift.

Deny the ashi structure

The hook elevates and the ashi attacks. Preventing the second means the first is only a sweep threat.

Come forward over the hook

Driving your hips forward and down puts your weight where the hook cannot use it.

What Causes Escapes to Fail

Pulling the leg straight out. While elevated there is nothing to pull against, and the attempt usually costs balance.

Fighting the ashi and ignoring the hook. The hook is what makes the ashi work.

Standing tall. Height is what the hook wants.

Counter-Offensive Options

Reasonable. The attacker is carrying weight, which is effortful and unstable, and a defender who drops their base at the right moment can flatten the whole structure. This is one of the few entanglements where the defender’s counter is positional and high-percentage.

Common Errors

Treating it as a sweep problem only. It is a sweep and a leg attack, and defending only the sweep concedes the second.

Late weight recovery. The longer you are carried the fewer options remain.

Narrow base. The free leg has to go somewhere useful.

Drilling Notes

Drill the weight recovery in isolation before drilling any escape. It is the mechanism the rest depends on.

Drill from a live butterfly exchange rather than a set position, since the conversion is what you need to feel.

Ability Level Guidance

Developing. One of the few defending positions in this family that a relative beginner will both meet and be able to solve.