Kouchi Gari

What This Is

Kouchi gari — the minor inner reap — is a foot sweep technique in which the attacker uses the inside of their foot or heel to hook behind the opponent’s near ankle and reap the leg backward. The opponent, unable to step with the reaped leg and with their weight committed to it, falls backward and to the side.

The kouchi gari is mechanically simple — hook behind the ankle, reap backward — but requires precise timing. The leg is reaped at the moment the opponent’s weight is shifting onto it. A reap against an unweighted leg simply moves the leg away; a reap against a fully planted, static leg requires force to move. The skill is the timing — finding and acting on the weight transfer moment.

The kouchi gari is used both from standing clinch positions and from the seated guard. In the standing context, it is a direct takedown tool from the over-under clinch. In the seated guard context, Danaher’s double kouchi gari from seated guard is a bilateral inner reap entry that transitions to leg entanglement positions.

The Invariable in Action

The kouchi gari targets the leg the opponent is stepping onto — making it simultaneously the primary support leg and the reaped leg. At the moment of the reap, the opponent cannot use the secondary leg (the non-reaped leg) to rebalance because their weight has already transferred to the reaped leg. INV-ST01 applies: the reaped leg, once removed, is the leg the opponent needed to rebalance with. The fall is unavoidable when the timing is correct.

The kouchi gari targets the support point directly — the planted foot. At the moment of weight transfer, the foot is the entire base. Removing it with the inner reap disrupts the opponent’s base completely regardless of size or strength, because the disruption is to the mechanical support structure, not to the musculature.

Entering This Technique

From Over-Under Clinch

From the over-under, use the underhook to steer the opponent — pushing them to one side to force a step. As the near foot steps and the weight transfers onto it, execute the kouchi on the near ankle. The underhook controls the direction of the step; the reap catches the ankle mid-transfer. See: Over-Under Clinch.

From Seated Guard — Danaher Double Kouchi

From seated guard against a standing opponent, the guard player reaches both feet to hook inside both of the opponent’s ankles simultaneously and reaps both legs inward. The opponent falls backward. This is the double kouchi gari from seated position — a bilateral sweep entry. See the section below.

Mechanics of the Reap

Foot Position

The reaping foot hooks behind the opponent’s near ankle — the inside of the reaping heel contacts the inside of the opponent’s Achilles tendon. The reap is not a kick; it is a hook that pulls the ankle backward and inward. The reaping knee bends slightly to enable the hook.

Direction of the Reap

The reap direction is backward and slightly inward — pulling the ankle toward the attacker and toward the opponent’s centreline simultaneously. This direction removes the ankle from its support position and creates the rotational fall. A purely backward reap (no inward component) may simply push the ankle back without creating the fall.

Upper Body Component

Simultaneous with the reap, the upper body control (overhook, underhook, or collar tie) pulls or pushes the opponent in the direction of the fall — creating the diagonal force vector that combines with the reap. Upper body goes one way; the ankle goes the other.

The Timing Principle

The kouchi gari has three weight states against which it can be applied:

• No weight (foot just lifted): the reap moves the leg freely but has no destabilising effect. The opponent simply takes the step with the other leg.
• Transferring weight (mid-step, foot landing): the optimal timing. The opponent’s weight is committing to the ankle — it cannot be withdrawn quickly. The reap at this moment removes the ankle from under the committing weight.
• Full weight (fully planted, both feet down): the reap requires significant force and is often too late. The opponent has established base and the ankle has become load-bearing — removing it requires overcoming the full body weight.

The skill of the kouchi gari is reading and catching the mid-step moment. Practitioners who force the step — using upper body control to steer the opponent into a predictable step — create the window rather than waiting for it.

From This Technique

Opponent Falls Backward — Side Control

The primary outcome. The opponent falls backward and to the side — the practitioner follows them to the mat, landing in side control or close to it.

Opponent Hops and Turtles

An opponent who recognises the kouchi may hop the reaped leg and turtle forward. This avoids the fall but creates the turtle top position for the practitioner to exploit.

Seated Kouchi — Danaher System

In the Danaher seated guard system, the double kouchi gari is a bilateral foot sweep from seated guard against a standing opponent. The guard player hooks both ankles simultaneously with both feet and reaps both inward — the opponent falls backward with both feet removed simultaneously.

The seated double kouchi is primarily used as an entry to leg entanglement positions rather than as a standalone takedown. As the opponent falls backward from the double kouchi, the guard player’s legs are already in position to enter ashi garami (leg entanglement) as the opponent hits the mat. The double kouchi is the route from seated guard to the back-lying leg entanglement entry.

The timing for the seated kouchi: the guard player reaps when the standing opponent shifts their weight forward (to pass or to step in). The forward weight shift is the opportunity — the ankles are lightened as the weight moves forward, creating the window for the inward reap.

Common Errors — and Why They Fail

Error: Reaping against a fully planted, static foot. Why it fails: INV-06. Full body weight on a stationary ankle requires significant force to move. The kouchi gari is a timing technique, not a strength technique — reaping a static foot is the strength version that fails against size. Correction: Wait for the step, or create the step with upper body control. The reap is always timed to weight transfer, never to a static position.

Error: No upper body direction change — reaping the ankle without opposing upper body force. Why it fails: Without the diagonal force (upper body one direction, ankle the other), the opponent can squat and maintain balance on the reaped leg. The fall requires both forces. Correction: The upper body control must push or pull the opponent in the direction of the intended fall simultaneously with the reap.

Error: Reaping forward rather than backward-and-inward. Why it fails: A forward reap pushes the ankle away rather than removing it from under the body. The reap direction must be backward (toward the attacker) and inward (toward the opponent’s centreline). Correction: Think of the reap as pulling the ankle toward your own shin — backward and across the opponent’s centreline.

Drilling Notes

• Walk-and-reap timing. Partner walks; practitioner tracks beside them and times kouchi reaps to mid-step. The goal is to catch the ankle as it lands — the reap begins when the foot touches the mat, not after it has fully planted. Twenty reps.
• Force-the-step drill. From the over-under, use the underhook to push the opponent to one side, forcing a step. Time the kouchi to the reactive step. Practise creating the step before waiting for it.
• Seated double kouchi entry. From seated guard, practise both-ankle hooks and bilateral reap. Cooperative partner falls backward; guard player follows to leg entanglement entry. Build the full sequence — hook, reap, follow to ashi position — cooperatively before adding resistance.

Ability Level Guidance

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